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Posted to commits@lucene.apache.org by gi...@apache.org on 2026/03/06 09:19:56 UTC

(lucene-site) branch asf-staging updated: Automatic Site Publish by Buildbot

This is an automated email from the ASF dual-hosted git repository.

git-site-role pushed a commit to branch asf-staging
in repository https://gitbox.apache.org/repos/asf/lucene-site.git


The following commit(s) were added to refs/heads/asf-staging by this push:
     new 5822b5645 Automatic Site Publish by Buildbot
5822b5645 is described below

commit 5822b5645ab5fd056fc5161fd610161c7a76ec85
Author: buildbot <us...@infra.apache.org>
AuthorDate: Fri Mar 6 09:19:53 2026 +0000

    Automatic Site Publish by Buildbot
---
 output/code-of-conduct.html              |  229 ---
 output/core/corenews.html                | 3076 ------------------------------
 output/core/developer.html               |  267 ---
 output/core/discussion.html              |  318 ---
 output/core/documentation.html           |  251 ---
 output/core/downloads.html               |  309 ---
 output/core/features.html                |  279 ---
 output/core/index.html                   |  285 ---
 output/core/quickstart.html              |  250 ---
 output/core/systemreqs.html              |  251 ---
 output/feeds/all.atom.xml                | 2751 +-------------------------
 output/feeds/core/news.atom.xml          | 2545 ------------------------
 output/feeds/news.atom.xml               |   98 -
 output/feeds/openrelevance/news.atom.xml |    8 -
 output/feeds/pylucene/news.atom.xml      |  106 -
 output/index.html                        |  273 ---
 output/news.html                         |  335 ----
 output/openrelevance/index.html          |  178 --
 output/openrelevance/mailing-lists.html  |  152 --
 output/pylucene/features.html            |  320 ----
 output/pylucene/index.html               |  207 --
 output/pylucene/install.html             |  218 ---
 output/pylucene/jcc/features.html        |  726 -------
 output/pylucene/jcc/index.html           |  163 --
 output/pylucene/jcc/install.html         |  298 ---
 output/pylucene/mailing-lists.html       |  187 --
 output/pylucene/news.html                |  472 -----
 output/pylucene/version_control.html     |  158 --
 output/site-instructions.html            |  226 ---
 output/whoweare.html                     |  433 -----
 30 files changed, 1 insertion(+), 15368 deletions(-)

diff --git a/output/code-of-conduct.html b/output/code-of-conduct.html
deleted file mode 100644
index 7079ec6b8..000000000
--- a/output/code-of-conduct.html
+++ /dev/null
@@ -1,229 +0,0 @@
-<!doctype html>
-<html>
-  <head>
-<!--
-    Licensed to the Apache Software Foundation (ASF) under one or more
-    contributor license agreements.  See the NOTICE file distributed with
-    this work for additional information regarding copyright ownership.
-    The ASF licenses this file to You under the Apache License, Version 2.0
-    (the "License"); you may not use this file except in compliance with
-    the License.  You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE- 2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
--->
-<link href="/theme/css/lucene/global.css?v=668d0966" rel="stylesheet" type="text/css">
-
-<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/>
-<meta name="Distribution" content="Global"/>
-<meta name="Robots" content="index,follow"/>
-
-<script type="text/javascript" src="/theme/javascript/lucene/prototype.js?v=668d0966"></script>
-<script type="text/javascript" src="/theme/javascript/lucene/effects.js?v=668d0966"></script>
-<script type="text/javascript" src="/theme/javascript/lucene/slides.js?v=668d0966"></script>
-<script src="https://www.apachecon.com/event-images/snippet.js"></script>
-<!-- Matomo -->
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-  /* tracker methods like "setCustomDimension" should be called before
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-  _paq.push(["setDoNotTrack", true]);
-  _paq.push(["disableCookies"]);
-  _paq.push(['trackPageView']);
-  _paq.push(['enableLinkTracking']);
-  (function() {
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-    _paq.push(['setTrackerUrl', u+'matomo.php']);
-    _paq.push(['setSiteId', '85']);
-    var d=document, g=d.createElement('script'),
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-    g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
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-</script>
-<!-- End Matomo Code -->    <title>Apache Lucene - Code of Conduct</title>
-<meta name="keywords"
-       content="apache, apache lucene, apache solr, solr, lucene
-       search, information retrieval, spell checking, faceting, inverted index,
-       open source"/>    <meta property="og:type" content="website" />
-    <meta property="og:url" content="https://lucene.apache.org/code-of-conduct.html"/>
-    <meta property="og:title" content="Code of Conduct"/>
-    <meta property="og:description" content="For a large and diverse community like ours to be friendly, welcoming and respectful, we recognize the need for some guidelines. The..."/>
-    <meta property="og:image" content="https://lucene.apache.org/theme/images/lucene/lucene_og_image.png?v=668d0966"/>
-    <meta property="og:image:secure_url" content="https://lucene.apache.org/theme/images/lucene/lucene_og_image.png?v=668d0966"/>
-<link rel="shortcut icon" type="image/png"
-                                                 href="/theme/images/lucene/lucene-favicon.png?v=668d0966"/>  </head>
-  <body id="home">
-    <div id="wrap">
-      <div id="header">
-        <div id="logo" style="float:left">
-          <a href="/">
-            <img border="0" src="/theme/images/lucene/lucene_logo_green_300.png?v=668d0966" alt="Lucene Logo"/>
-          </a>
-        </div>
-<!-- TODO: Search disabled as it does not work, 2021-02-21
-<div id="search" style="float:right;zoom:1">
-  <form id="quick-search" method="GET" action="https://sematext.com/opensee/lucene" name="searchform">
-    <fieldset>
-      <input type="search" id="q" name="q" placeholder="Search with Apache Solr..." class="class1 class2 hint" accesskey="q">
-    </fieldset>
-  </form>
-</div>-->
-        <div id="nav">
-          <ul>
-<li><a href="/core/">Core (Java)</a></li>
-<li><a class="last" href="/pylucene/index.html">PyLucene</a></li>
-          </ul>
-        </div>
-
-<div id="slides">
-  <div class="slideshow" id="mantleSlides">
-<div id="slide1" >
-  <div class="callout">
-    Ultra-fast Search Library<br/>
-  </div>
-  <div class="descwrapper"><div class="description">
-      Apache Lucene set the standard for search and indexing performance.
-      Lucene is the search core of Apache Solr™, Elasticsearch™, and OpenSearch.
-    </div></div>
-    <div class="mantle">
-      <img alt="Apache Lucene" src="/theme/images/lucene/tlp/mantle-lucene.png?v=668d0966"/>
-    </div>
-</div>
-<div id="slide2" style="display:none">
-  <div class="callout">
-    Proven search capabilities<br/>
-  </div>
-  <div class="descwrapper"><div class="description">
-      Our core algorithms along with the Solr search server power applications the world over, ranging
-      from mobile devices to sites like Twitter, Apple and Wikipedia.
-    </div></div>
-    <div class="mantle">
-      <img alt="Lucene Power" src="/theme/images/lucene/mantle-power.png?v=668d0966"/>
-    </div>
-</div>
-<div id="slide3" style="display:none">
-  <div class="callout">
-    Large, Vibrant community
-  </div>
-  <div class="descwrapper"><div class="description">
-      The goal of Apache Lucene is to provide world class search capabilities
-    </div></div>
-    <div class="mantle">
-      <img alt="Apache Mahout community" src="/theme/images/lucene/tlp/mantle-community.png?v=668d0966"/>
-    </div>
-</div>
-<div id="slide4" style="display:none">
-  <div class="callout">
-    Apache 2.0 licensed
-  </div>
-  <div class="descwrapper"><div class="description">
-      Apache Lucene is distributed under a commercially friendly Apache Software license
-    </div></div>
-    <div class="mantle">
-      <img alt="Apache Software Foundation" src="/theme/images/lucene/mantle-asf.png?v=668d0966"/>
-    </div>
-</div>  </div>
-  <div class="controls">
-    <a class="next" id="next" title="Next" href="#">Next</a>
-    <a class="previous" id="previous" title="Previous" href="#">Previous</a>
-    <a class="start" id="start" title="Start" href="#" style="display: none; ">Start</a>
-    <a class="stop" id="stop" title="Stop" href="#">Stop</a>
-  </div>
-
-  <script type="text/javascript">
-    function StartSlides() {
-      new Slides('mantleSlides');
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-</div> <!-- End #slides -->
-      </div> <!-- End #header -->
-
-      <div id="content-wrap" class="clearfix">
-        <div id="main">
-<div>
-  <h1 class="title">Code of Conduct</h1>
-  <p>For a large and diverse community like ours to be friendly, welcoming and respectful, we recognize the need for some guidelines. The project follows <a href="https://www.apache.org/foundation/policies/conduct">Apache's Code of Conduct statement</a>. Please take some time to read and understand it.</p>
-<p>If you feel there has been a violation of this code, please point out your concerns publicly in a friendly and matter of fact manner. Nonverbal communication is prone to misinterpretation and misunderstanding. Everyone has bad days and sometimes says things they regret later. Someone else's communication style may clash with yours, but the difference can be amicably resolved. After pointing out your concerns please be generous upon receiving an apology.</p>
-<p>Should there be repeated instances of code of conduct violations, or if there is an obvious and severe violation, the Lucene PMC may become involved.</p>
-<h2 id="mailing-list-etiquette">Mailing list etiquette</h2>
-<p>Written communication is hard and prone to misunderstandings. We recommend reading <a href="https://community.apache.org/contributors/etiquette">ComDev's etiquette page</a> for some practical tips on how to improve.</p>
-<h2 id="the-apache-way">The Apache Way</h2>
-<p>As an Apache project we strive to follow <a href="http://theapacheway.com/">The Apache Way</a>. If you are new to the community or to open source in general, you may benefit from understanding our core values as a community, and why we operate the way we do. </p>
-</div>
-        </div>
-        <div id="sidebar">
-<div class="button-green">
-  <a href="/core/downloads.html">Download</a>
-  <div class="flap top">Click to</div>
-  <div class="flap bottom">Apache Lucene 10.4.0</div>
-</div>
-<div class="download-desc">Apache Lucene 10.4.0</div>
-
-<h1 id="projects">Projects<a class="headerlink" href="#projects" title="Permanent link">¶</a></h1>
-<ul>
-  <li><a href="/core/">Lucene Core (Java)</a></li>
-  <li><a href="/pylucene/">PyLucene</a></li>
-  <li><a href="/openrelevance/">Open Relevance (Discontinued)</a></li>
-</ul>
-
-<h1 id="about">About<a class="headerlink" href="#about" title="Permanent link">¶</a></h1>
-<ul>
-  <li><a href="https://www.apache.org/licenses/">License</a></li>
-  <li><a href="/whoweare.html">Who We are</a></li>
-  <li><a href="/news.html">TLP News</a></li>
-  <li><a href="/code-of-conduct.html">Code of Conduct</a></li>
-</ul>
-
-<h1 id="events">Events<a class="headerlink" href="#events" title="Permanent link">¶</a></h1>
-<ul>
-  <a class="acevent" data-format="square" data-mode="light" data-width="160" data-style="border: 1px solid lightgrey"></a>
-</ul>
-
-<h1 id="asf-links">ASF links<a class="headerlink" href="#asf-links" title="Permanent link">¶</a></h1>
-<ul>
-  <li><a href="https://www.apache.org">Apache Software Foundation</a></li>
-  <li><a href="https://www.apache.org/foundation/thanks.html">Thanks</a></li>
-  <li><a href="https://www.apache.org/foundation/sponsorship.html">Become a Sponsor</a></li>
-  <li><a href="https://www.apache.org/security/">Security</a></li>
-</ul>
-
-<h1 id="editing-this-site">Editing This Site<a class="headerlink" href="#editing-this-site" title="Permanent link">¶</a></h1>
-<ul>
-  <li><a href="site-instructions.html">Instructions</a></li>
-  <li><a href="http://daringfireball.net/projects/markdown/syntax">Markdown</a></li>
-</ul>
-
-<h1 id="related-projects">Related Projects<a class="headerlink" href="#related-projects" title="Permanent link">¶</a></h1>
-<ul>
-  <li><a href="https://solr.apache.org">Apache Solr</a></li>
-  <li><a href="http://hadoop.apache.org">Apache Hadoop</a></li>
-  <li><a href="http://manifoldcf.apache.org/">Apache ManifoldCF</a></li>
-  <li><a href="http://lucenenet.apache.org/">Apache Lucene.Net</a></li>
-  <li><a href="http://mahout.apache.org">Apache Mahout</a></li>
-  <li><a href="http://nutch.apache.org">Apache Nutch</a></li>
-  <li><a href="http://opennlp.apache.org/">Apache OpenNLP</a></li>
-  <li><a href="http://tika.apache.org">Apache Tika</a></li>
-  <li><a href="http://zookeeper.apache.org">Apache Zookeeper</a></li>
-</ul>        </div>
-      </div> <!-- End #content-wrap -->
-
-<div id="footer">
-  <div class="copyright">
-    <p>
-      Copyright &copy; 2011-2026 The Apache Software Foundation, Licensed under
-      the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.  <a href="https://privacy.apache.org/policies/privacy-policy-public.html">Privacy Policy</a>      <br/>
-      Apache and the Apache logo are trademarks of The Apache Software Foundation.  Apache Lucene, Apache Solr and their
-      respective logos are trademarks of the Apache Software Foundation.  Please see the <a href="https://www.apache.org/foundation/marks/">Apache Trademark Policy</a>
-      for more information.
-    </p>
-  </div>
-</div>    </div> <!-- End #wrap -->
-  </body>
-</html>
\ No newline at end of file
diff --git a/output/core/corenews.html b/output/core/corenews.html
deleted file mode 100644
index 47beda1c4..000000000
--- a/output/core/corenews.html
+++ /dev/null
@@ -1,3076 +0,0 @@
-<!doctype html>
-<html>
-  <head>
-<!--
-    Licensed to the Apache Software Foundation (ASF) under one or more
-    contributor license agreements.  See the NOTICE file distributed with
-    this work for additional information regarding copyright ownership.
-    The ASF licenses this file to You under the Apache License, Version 2.0
-    (the "License"); you may not use this file except in compliance with
-    the License.  You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE- 2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
--->
-<link href="/theme/css/lucene/global.css?v=668d0966" rel="stylesheet" type="text/css">
-
-<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/>
-<meta name="Distribution" content="Global"/>
-<meta name="Robots" content="index,follow"/>
-
-<script type="text/javascript" src="/theme/javascript/lucene/prototype.js?v=668d0966"></script>
-<script type="text/javascript" src="/theme/javascript/lucene/effects.js?v=668d0966"></script>
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-<script src="https://www.apachecon.com/event-images/snippet.js"></script>
-<!-- Matomo -->
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-  var _paq = window._paq = window._paq || [];
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-  _paq.push(["disableCookies"]);
-  _paq.push(['trackPageView']);
-  _paq.push(['enableLinkTracking']);
-  (function() {
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-    _paq.push(['setTrackerUrl', u+'matomo.php']);
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-    g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
-  })();
-</script>
-<!-- End Matomo Code -->    <title>Apache Lucene - Lucene™ Core News</title>
-<meta name="keywords"
-       content="apache, apache lucene, apache solr, solr, lucene
-       search, information retrieval, spell checking, faceting, inverted index,
-       open source"/>    <meta property="og:type" content="website" />
-    <meta property="og:url" content="https://lucene.apache.org/core/corenews.html"/>
-    <meta property="og:title" content="Lucene™ Core News"/>
-    <meta property="og:description" content="Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for..."/>
-    <meta property="og:image" content="https://lucene.apache.org/theme/images/lucene/lucene_og_image.png?v=668d0966"/>
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-<link rel="shortcut icon" type="image/png"
-                                                 href="/theme/images/lucene/lucene-favicon.png?v=668d0966"/><link href="/theme/css/lucene/core.css?v=668d0966" rel="stylesheet" type="text/css">
-  </head>
-  <body id="home">
-    <div id="wrap">
-      <div id="header">
-        <div id="logo" style="float:left">
-          <a href="/">
-            <img border="0" src="/theme/images/lucene/lucene_logo_green_300.png?v=668d0966" alt="Lucene Logo"/>
-          </a>
-        </div>
-<!-- TODO: Search disabled as it does not work, 2021-02-21
-<div id="search" style="float:right;zoom:1">
-  <form id="quick-search" method="GET" action="https://sematext.com/opensee/lucene" name="searchform">
-    <fieldset>
-      <input type="search" id="q" name="q" placeholder="Search with Apache Solr..." class="class1 class2 hint" accesskey="q">
-    </fieldset>
-  </form>
-</div>-->
-        <div id="nav">
-          <ul>
-<li><a href="/core/index.html">Core</a></li>
-<li><a href="/core/corenews.html">News</a></li>
-<li><a href="/core/downloads.html">Download</a></li>
-<li><a href="/core/discussion.html">Mailing Lists</a></li>
-<li><a href="/core/documentation.html">Documentation</a></li>
-<li><a href="/core/quickstart.html">Tutorials</a></li>
-<li><a href="https://github.com/apache/lucene/issues">Issue Tracker</a></li>
-<li><a class="last" href="/">Lucene TLP</a></li>
-          </ul>
-        </div>
-
-<div id="slides">
-  <div class="slideshow" id="mantleSlides">
-<div id="slide1">
-  <div class="callout">
-    Ultra-fast Search Library<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene sets the standard for search and indexing performance
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-lucene.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide2" style="display:none">
-  <div class="callout">
-    Proven search capabilities<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene is the de facto standard for search libraries
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Lucene Power" src="/theme/images/lucene/mantle-power.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide3" style="display:none">
-  <div class="callout">
-    Innovation and Maturity
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene has proven stability as well as a track record of innovation
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-innovation.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide4" style="display:none">
-  <div class="callout">
-    Apache 2.0 licensed
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene is distributed under a commercially friendly Apache Software license
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Software Foundation" src="/theme/images/lucene/mantle-asf.png?v=668d0966"/>
-  </div>
-</div>  </div>
-  <div class="controls">
-    <a class="next" id="next" title="Next" href="#">Next</a>
-    <a class="previous" id="previous" title="Previous" href="#">Previous</a>
-    <a class="start" id="start" title="Start" href="#" style="display: none; ">Start</a>
-    <a class="stop" id="stop" title="Stop" href="#">Stop</a>
-  </div>
-
-  <script type="text/javascript">
-    function StartSlides() {
-      new Slides('mantleSlides');
-    }
-document.observe('dom:loaded', StartSlides);
-  </script>
-</div> <!-- End #slides -->
-      </div> <!-- End #header -->
-
-      <div id="content-wrap" class="clearfix">
-        <div id="main">
-  <div>
-  <h1 class="title">Lucene™ Core News</h1>
-  <p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java.
-It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>You may also read these news as an <a href="/feeds/core/news.atom.xml">ATOM feed</a>.</p>
-</div>
-
-  <div>
-    <h2 id="apache-lucenetm-1040-available">
-      25 February 2026 - Apache Lucene™ 10.4.0 available
-      <a class="headerlink" href="#apache-lucenetm-1040-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 10.4.0. </p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-1040-release-highlights">Lucene 10.4.0 Release Highlights:</h3>
-<p>Lucene 10.4 brings some significant performance improvements and a brand new knn vectors format.</p>
-<p>Many lucene queries should see a performance improvement of 10-15%, some might even see a 35% improvement! This is due to increasing the block size of the terms postings and better utilization of SIMD optimized code.</p>
-<p>Additionally, there is a new scalar quantized format for dense vectors and knn search. Lucene104ScalarQuantizedVectorsFormat and Lucene104HnswScalarQuantizedVectorsFormat allow custom quantized bits for 1, 2, 4, 7, and 8. The recall has improved significantly and for many vector types, quantizing to 2 bits will achieve even better recall than older formats at the 4 bit level. This improves latency while increasing recall for various vector work loads.</p>
-<p><strong>New Features</strong></p>
-<ul>
-<li>Provides new and improved scalar quantized formats Lucene104ScalarQuantizedVectorsFormat  and Lucene104HnswScalarQuantizedVectorsFormat  for dense vectors. Allowing for quantizing to 1, 2, 4, 7, and 8 bits. For reference, the new 2 bit quantization technique provides better recall and speed than the old 4 bit.</li>
-</ul>
-<p><strong>API Changes</strong></p>
-<ul>
-<li>New bulk operation APIs for dense vectors and numeric doc values</li>
-</ul>
-<p><strong>Improvements and Optimizations</strong></p>
-<ul>
-<li>HNSW graphs can now delay being built for tiny segments and will prevent completely rebuilding the graphs when handling deletes</li>
-<li>Handling of deletes in general got much faster and cheaper, improving storage costs significantly when there are very few deleted docs</li>
-<li>Block size increased for terms postings, significantly improving query latency for many types of queries</li>
-<li>Use a coarser-grained competitive iterator with lower construction costs for numeric sorts against fields with DocValuesSkippers.</li>
-</ul>
-<p><strong>Runtime Behavior Changes and Bug Fixes</strong></p>
-<ul>
-<li>Fix tessellator failure by preferring the shared vertex that is the leftmost vertex of the hole</li>
-<li>The "reverse" field of SortField is now final. If you have subclassed SortField, you should set "reverse" in the super constructor.</li>
-<li>Align float vectors on disk to 64 bytes, for optimal performance on Arm Neoverse machines</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/10_4_0/changes/Changes.html">https://lucene.apache.org/core/10_4_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-1032-available">
-      17 November 2025 - Apache Lucene™ 10.3.2 available
-      <a class="headerlink" href="#apache-lucenetm-1032-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 10.3.2.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-1032-release-highlights">Lucene 10.3.2 Release Highlights:</h3>
-<p><strong> Bug fixes </strong></p>
-<ul>
-<li>Fix potential EOF introduced by optimized filter iterations in MaxScoreBulkScorer.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/10_3_2/changes/Changes.html">https://lucene.apache.org/core/10_3_2/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-1031-available">
-      6 October 2025 - Apache Lucene™ 10.3.1 available
-      <a class="headerlink" href="#apache-lucenetm-1031-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 10.3.1.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-1031-release-highlights">Lucene 10.3.1 Release Highlights:</h3>
-<p><strong> Bug Fixes </strong></p>
-<ul>
-<li>Fix the Impact returned from Lucene103PostingsReader when frequencies are not indexed. </li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/10_3_1/changes/Changes.html">https://lucene.apache.org/core/10_3_1/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-9123-available">
-      27 September 2025 - Apache Lucene™ 9.12.3 available
-      <a class="headerlink" href="#apache-lucenetm-9123-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.3.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This patch release contains bug fixes that are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-9123-release-highlights">Lucene 9.12.3 Release Highlights:</h3>
-<p><strong>Bug fixes</strong></p>
-<ul>
-<li>Support for JDK24+</li>
-<li>Reduce sharedArenaMaxPermits from 1024 to 64</li>
-<li>Use READONCE to read segment infos</li>
-<li>Fix rare spin-loop in RefCountedSharedArena</li>
-<li>Ensure vector queries handle advanceShallow correctly</li>
-<li>Fix failure due to hole bridge being coplanar with polygon edge</li>
-</ul>
-<p>Further details of changes are available in the change log available at:</p>
-<p><a href="https://lucene.apache.org/core/9_12_3/changes/Changes.html">https://lucene.apache.org/core/9_12_3/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-1030-available">
-      13 September 2025 - Apache Lucene™ 10.3.0 available
-      <a class="headerlink" href="#apache-lucenetm-1030-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 10.3.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-1030-release-highlights">Lucene 10.3.0 Release Highlights:</h3>
-<p>Lucene 10.3 brings major performance improvements.</p>
-<p>Lexical search is now vectorized to better take advantage of SIMD instructions, more efficient memory access patterns, CPU pipelining and amortize the cost of virtual function calls. Lucene's nightly benchmarks report a 40% speedup compared with Lucene 10.2 when computing top-100 hits by score on disjunctive and conjunctive queries.</p>
-<p>Vector search now better parallelizes fetching vectors into the CPU cache. Lucene's nightly benchmarks report a 15%-20% speedup compared with Lucene 10.2.</p>
-<p>The terms dictionary performs about 30% faster than in Lucene 10.2 on primary-key lookups according to Lucene's nightly benchmarks. This should help speed up workloads that rely on terms dictionary lookup performance including primary-key lookups, indexing operations that specify an ID and TermInSet queries.</p>
-<p><strong>New Features</strong></p>
-<ul>
-<li>Supports reranking with late interaction model multi-vectors, full precision vector similarity scores, or any provided DoubleValuesSource, enabling improved ranking of search results.</li>
-<li>Adds a MultiIndexMergeScheduler – a multi-tenant wrapper that allows sharing a common merge scheduler across multiple instances.</li>
-</ul>
-<p><strong>API Changes</strong></p>
-<ul>
-<li>Adds API to fetch the size of off-heap memory required by a KNN field. This size can be used to help determine the memory requirements for optimal search performance, which can be greatly affected by page faults when not enough memory is available.</li>
-<li>RandomVectorScorer now supports a bulk scoring interface.</li>
-<li>LeafReader#searchNearestVectors now accepts an AcceptDocs instance instead of a Bits instance to identify document IDs to filter.</li>
-<li>Collectors can now take advantage of pre-aggregated data to speed up faceting using LeafCollector#collectRange.</li>
-</ul>
-<p><strong>Improvements and Optimizations</strong></p>
-<ul>
-<li>Adds optimistic knn search to vector queries. Optimistic knn search addresses a major issue where we return inconsistent results due to race conditions in the shared queue previously used over multi-segment search.</li>
-<li>Faster vector search on HNSW graphs through GroupVarInt encoding.</li>
-<li>Searcher managers now support 'Adaptive Refresh', enabling users to control the commit points it refreshes on. This helps with graceful handling of large replication payloads in segment-replicated systems.</li>
-</ul>
-<p><strong>Runtime Behavior Changes and Bug Fixes</strong></p>
-<ul>
-<li>The default ReadAdvice has been changed from RANDOM to NORMAL. MMapDirectory will no longer set any specific read advice out-of-the-box.</li>
-<li>Default RefCountedSharedArena.DEFAULT_MAX_PERMITS are reduced to 64. Also fixes the infinite loop when RefCountedSharedArena's underlying Arena#close fails due to concurrent usage of segments.</li>
-<li>Uses READONCE when reading segment infos, to fix mmap leaks on segment info files. Includes fixes for multiple other resource leaks.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/10_3_0/changes/Changes.html">https://lucene.apache.org/core/10_3_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-1022-available">
-      20 June 2025 - Apache Lucene™ 10.2.2 available
-      <a class="headerlink" href="#apache-lucenetm-1022-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 10.2.2.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This patch release contains bug fixes that are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-1022-release-highlights">Lucene 10.2.2 Release Highlights</h3>
-<h4 id="bug-fixes">Bug fixes</h4>
-<ul>
-<li>Reduce NeighborArray on-heap memory during HNSW graph building</li>
-<li>Fix IndexSortSortedNumericDocValuesRangeQuery for int sort</li>
-<li>ValueSource.fromDoubleValuesSource(dvs).getSortField() would throw errors when used if the DoubleValuesSource needed scores </li>
-</ul>
-<p>Further details of changes are available in the change log available at: </p>
-<p><a href="http://lucene.apache.org/core/10_2_2/changes/Changes.html">http://lucene.apache.org/core/10_2_2/changes/Changes.html</a> </p>
-    <h2 id="apache-lucenetm-9122-available">
-      20 June 2025 - Apache Lucene™ 9.12.2 available
-      <a class="headerlink" href="#apache-lucenetm-9122-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.2.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This patch release contains bug fixes that are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-9122-release-highlights">Lucene 9.12.2 Release Highlights</h3>
-<ul>
-<li>Reduce NeighborArray on-heap memory during HNSW graph building</li>
-<li>Fix IndexSortSortedNumericDocValuesRangeQuery for int sort</li>
-<li>ValueSource.fromDoubleValuesSource(dvs).getSortField() would throw errors when used if the DoubleValuesSource needed scores</li>
-<li>Disable connectedComponents logic in HNSW graph building.</li>
-</ul>
-<p>Further details of changes are available in the change log available at:</p>
-<p><a href="https://lucene.apache.org/core/9_12_2/changes/Changes.html">https://lucene.apache.org/core/9_12_2/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-1021-available">
-      1 May 2025 - Apache Lucene™ 10.2.1 available
-      <a class="headerlink" href="#apache-lucenetm-1021-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 10.2.1.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This patch release contains bug fixes that are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-1021-release-highlights">Lucene 10.2.1 Release Highlights</h3>
-<h4 id="bug-fixes">Bug fixes</h4>
-<ul>
-<li>Fix DISIDocIdStream::count so that it does not try to count beyond max.</li>
-<li>Correct TermOrdValComparator competitive iterator so that it forces sparse field iteration to be at least scoring window baseline when doing intoBitSet.</li>
-<li>Provide better impacts for fields indexed with IndexOptions.DOCS</li>
-<li>Fixed lead cost computations for bulk scorers of conjunctive queries that mix MUST and FILTER clauses, and disjunctive queries that configure a minimum number of matching SHOULD clauses.</li>
-</ul>
-<p>Further details of changes are available in the change log available at: </p>
-<p><a href="http://lucene.apache.org/core/10_2_1/changes/Changes.html">http://lucene.apache.org/core/10_2_1/changes/Changes.html</a> </p>
-    <h2 id="apache-lucenetm-1020-available">
-      10 April 2025 - Apache Lucene™ 10.2.0 available
-      <a class="headerlink" href="#apache-lucenetm-1020-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 10.2.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search on high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous features, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-1020-release-highlights">Lucene 10.2.0 Release Highlights</h3>
-<p>Lucene 10.2 includes major search-time performance improvements for a wide variety of queries. This is most notably due to:</p>
-<ul>
-<li>Improved storage format of doc IDs in BKD trees for faster decoding.
-More vectorization when processing PointRangeQuerys and non-scoring BooleanQuerys.</li>
-<li>Encoding of dense blocks of postings lists as bit sets instead of FOR-delta. This change also saves a bit of storage.</li>
-<li>Merging matches of dense conjunctive clauses using bitwise ANDs. This especially helps on postings blocks that are encoded as bit sets.
-Implementing the ACORN-1 algorithm for pre-filtered vector searches.</li>
-<li>Searches that don't require scores and match many docs should generally see good speedups, depending on how expensive the Collector is. Compared with Lucene 10.1.0, Lucene's nightly benchmarks report the following speedups when counting the number of hits of a the following queries:<ul>
-<li>Disjunctions of term queries: 77% to 4x faster</li>
-<li>Conjunctions of term queries: 38% to 5x faster</li>
-<li>Filtered disjunctions of term queries: 2.5x to 4x faster</li>
-<li>Filtered PointRangeQuery: 3.5x faster</li>
-</ul>
-</li>
-<li>And the following speedup when computing top-100 hits: <ul>
-<li>Pre-filtered vector search: 3.5x faster</li>
-</ul>
-</li>
-</ul>
-<h4 id="changes-in-runtime-behavior">Changes in Runtime Behavior</h4>
-<ul>
-<li>TieredMergePolicy's default floor segment size was increased from 2MB to 16MB. This is expected to result in slightly slower indexing and about 10 fewer segments per index for applications that flush frequently. This should in-turn help speed up queries that have a high per-segment overhead such as multi-term queries, point queries and vector search.</li>
-</ul>
-<h4 id="new-features">New Features</h4>
-<ul>
-<li>Added TopDocs#rrf to combine multiple TopDocs instances using reciprocal rank fusion.</li>
-<li>Added SeededKnnVectorQuery, an optimization to KnnVectorQuery that allows selecting better entry points for vector search using a seed Query.</li>
-</ul>
-<h4 id="improvements">Improvements</h4>
-<ul>
-<li>RegexpQuery support for unicode case-insensitive characters and ranges.<br>
-Optimizations</li>
-<li>Java 24 vector API support</li>
-<li>Efficiency improvements to Automaton and RegExp</li>
-<li>Faster merging of HNSW graphs which translated in a 25% indexing speedup in Lucene's nightly benchmarks.</li>
-<li>Conjunctive queries can now skip applying clauses when they have long runs of matching docs, a case which is not uncommon when an index sort is configured.
-Reduce heap usage during BKD tree merges.</li>
-</ul>
-<p>... plus a multitude of helpful bug fixes!</p>
-<p>Further details of changes are available in the change log available at: </p>
-<p><a href="http://lucene.apache.org/core/10_2_0/changes/Changes.html">http://lucene.apache.org/core/10_2_0/changes/Changes.html</a> </p>
-    <h2 id="apache-lucenetm-1010-available">
-      20 December 2024 - Apache Lucene™ 10.1.0 available
-      <a class="headerlink" href="#apache-lucenetm-1010-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 10.1.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-1010-release-highlights">Lucene 10.1.0 Release Highlights:</h3>
-<h4 id="new-features">New Features</h4>
-<ul>
-<li>Add IndexInput::isLoaded to determine if the contents of an  input is resident in physical memory</li>
-<li>FeatureField now supports storing term vectors.</li>
-</ul>
-<h4 id="improvements">Improvements</h4>
-<ul>
-<li>TieredMergePolicy now allows merging up to maxMergeAtOnce segments for merges below the floor segment size, even if maxMergeAtOnce is greater than segmentsPerTier. This makes it more efficient to configure TieredMergePolicy to merge segments aggressively by configuring a high value of floorSegmentSize (e.g. 64MB), a low value of segmentsPerTier (e.g. 4) and a high value of maxMergeAtOnce (e.g. 32).</li>
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>Many speedups to top-k query evaluation, in particular: top-level disjunctions, filtered disjunctions, conjunctions, DisjunctionMaxQuery.</li>
-<li>Speedup to exhaustive evaluation of conjunctive queries by vectorizing the intersection of postings lists.</li>
-<li>Reduced contention for top-k query evaluation when IndexSearcher is configured with an executor.</li>
-</ul>
-<p>... plus a multitude of helpful bug fixes!</p>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/10_1_0/changes/Changes.html">https://lucene.apache.org/core/10_1_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-9121-available">
-      13 December 2024 - Apache Lucene™ 9.12.1 available
-      <a class="headerlink" href="#apache-lucenetm-9121-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.1.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-9121-release-highlights">Lucene 9.12.1 Release Highlights:</h3>
-<h4 id="improvements">Improvements</h4>
-<ul>
-<li>Allow easier configuration of the Panama vectorization provider with newer Java versions. Set the org.apache.lucene.vectorization.upperJavaFeatureVersion system property to increase the set of Java versions that Panama vectorization will provide optimized implementations for.</li>
-</ul>
-<h4 id="bug-fixes">Bug fixes</h4>
-<ul>
-<li>Fixed backwards compatibility bug that caused sparse (not all documents have a vector) KNN indices written with 9.0.0 to give silently (no exception) terrible recall results when searched by any 9.x release</li>
-<li>Improve Tessellatorlogic when two holes share the same vertex with the polygon which was failing in valid polygons.</li>
-<li>Fix backwards compatibility bug that caused 9.12.0 to incorrectly throw IllegalStateException when trying to open an IndexReader on an index created with quantized (int4, int7, int8) KNN vectors using Lucene99HnswScalarQuantizedVectorsFormat.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/9_12_1/changes/Changes.html">https://lucene.apache.org/core/9_12_1/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-1000-available">
-      14 October 2024 - Apache Lucene™ 10.0.0 available
-      <a class="headerlink" href="#apache-lucenetm-1000-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 10.0.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-1000-release-highlights">Lucene 10.0.0 Release Highlights:</h3>
-<h4 id="system-requirements">System requirements</h4>
-<ul>
-<li>Lucene 10.0 requires JDK 21 or newer</li>
-</ul>
-<h4 id="api-changes">API changes</h4>
-<ul>
-<li>KNN vector values now have a random-access API.</li>
-<li>Deprecated APIs have been removed and a number of API changes have been made. Please consult the migrate guide for an extensive list and actions to take to migrate to 10.0.</li>
-</ul>
-<h4 id="new-features">New Features</h4>
-<ul>
-<li>A new IndexInput#prefetch API has been added, allowing query evaluation logic to let the Directory know about regions of data that are about to be read. This helps perform I/O concurrently under the hood. MMapDirectory implements this API using the madvise system call and the MADV_WILLNEED flag on Linux and Mac OS.</li>
-<li>Lucene now supports sparse indexing on doc values via FieldType#setDocValuesSkipIndexType. The sparse index will record the minimum and maximum values per block of doc IDs. Used in conjunction with index sorting to cluster similar documents together, this allows for very space-efficient and CPU-efficient filtering.</li>
-<li>Search concurrency is now decoupled from the index geometry, so that an index can be searched using any number of threads, regardless of its number of segments.</li>
-<li>Kmeans clustering on vectors</li>
-</ul>
-<h4 id="improvements">Improvements</h4>
-<ul>
-<li>Lucene now opens files with the MADV_RANDOM advice by default on Linux and Mac OS. This results in better efficiency for indexes that exceed the size of the page cache, but can make it slower to load indexes in the page cache. It is possible to revert to the MADV_NORMAL read advice by default by passing -Dorg.apache.lucene.store.defaultReadAdvice=NORMAL as a JVM startup flag.</li>
-<li>Snowball dictionaries have been upgraded, resulting in improved tokenization. This may require reindexing to ensure consistency of search results with pre-10.0 indexes.</li>
-<li>The expressions module is now using MethodHandles and <a href="https://openjdk.org/jeps/309">Dynamic Class-File Constants (JEP 309)</a> in combination with <a href="https://openjdk.org/jeps/371">hidden classes (JEP 371)</a> to implement a strict and type-safe call to external functions. This allows to easier extend expressions with custom functions in secure way because runtime linking of custom functions is no longer the responsibility of the expressions scripting engine. In additio [...]
-</ul>
-<p>... plus a multitude of helpful bug fixes!</p>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/10_0_0/changes/Changes.html">https://lucene.apache.org/core/10_0_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-9120-available">
-      28 September 2024 - Apache Lucene™ 9.12.0 available
-      <a class="headerlink" href="#apache-lucenetm-9120-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library
-written entirely in Java. It is a technology suitable for nearly any
-application that requires structured search, full-text search, faceting,
-nearest-neighbor search across high-dimensionality vectors, spell
-correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release is
-available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-9120-release-highlights">Lucene 9.12.0 Release Highlights:</h3>
-<h4 id="security-fixes">Security Fixes</h4>
-<ul>
-<li>Deserialization of Untrusted Data vulnerability in Apache Lucene
-   Replicator - CVE-2024-45772 </li>
-</ul>
-<h4 id="new-features">New Features</h4>
-<ul>
-<li>Improve intra-merge parallelism for many value types. (Ben Trent)</li>
-<li>Add support JDK 23 to the Panama Vectorization Provider. (Chris Hegarty)</li>
-<li>Match-time aggregation engine with improved flexibility and performance.
-   (Egor Potemkin, Shradha Shankar)</li>
-</ul>
-<h4 id="improvements">Improvements</h4>
-<ul>
-<li>Add Intervals.regexp and Intervals.range methods to produce IntervalsSource
-   for regexp and range queries. (Mayya Sharipova)</li>
-<li>Remove support for writing 8 bit scalar vector quantization. 4 and 7 bit
-   quantization are still supported (Michael McCandless )</li>
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>Inline postings skip data to improve performance of queries that need
-   skipping such as conjunctions. (Adrien Grand)</li>
-<li>Optimizations to the decoding logic of blocks of postings. (Adrien Grand,
-   Uwe Schindler, Greg Miller)</li>
-<li>Avoid performance degradation with closing shared mapped segment data
-   (Chris Hegarty, Michael Gibney, Uwe Schindler)</li>
-</ul>
-<p>... plus a multitude of helpful bug fixes!</p>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/9_12_0/changes/Changes.html">https://lucene.apache.org/core/9_12_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-8114-available">
-      24 September 2024 - Apache Lucene™ 8.11.4 available
-      <a class="headerlink" href="#apache-lucenetm-8114-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.4.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-8114-release-highlights">Lucene 8.11.4 Release Highlights:</h3>
-<ul>
-<li>There are no changes from Lucene 8.11.3</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/8_11_4/changes/Changes.html">https://lucene.apache.org/core/8_11_4/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-9111-available">
-      27 June 2024 - Apache Lucene™ 9.11.1 available
-      <a class="headerlink" href="#apache-lucenetm-9111-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.11.1.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-9111-release-highlights">Lucene 9.11.1 Release Highlights:</h3>
-<ul>
-<li>Fix performance regression in NumericComparator.</li>
-<li>Remove intra-merge parallelism for everything except HNSW graph merges.</li>
-<li>Fix bug that prevented adding a parent field to an index with no fields.</li>
-<li>Fix IndexOutOfBoundsException thrown in DefaultPassageFormatter by unordered matches.</li>
-<li>StringValueFacetCounts stops throwing NPE when faceting over an empty match-set.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/9_11_1/changes/Changes.html">https://lucene.apache.org/core/9_11_1/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-9110-available">
-      6 June 2024 - Apache Lucene™ 9.11.0 available
-      <a class="headerlink" href="#apache-lucenetm-9110-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.11.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-9110-release-highlights">Lucene 9.11.0 Release Highlights:</h3>
-<h4 id="new-features">New features</h4>
-<ul>
-<li>Add support for posix_madvise to MMapDirectory: If running on Linux/macOS and Java 21 or later, MMapDirectory uses IOContext to pass suitable MADV flags to kernel of operating system. This may improve paging logic especially when working with large indexes under memory pressure. </li>
-<li>Expand support for new scalar bit levels for HNSW vectors. This includes 4-bit vectors and an option to compress them to gain a 50% reduction in memory usage.</li>
-<li>Recursive graph bisection is now supported on indexes that have blocks </li>
-</ul>
-<h4 id="improvements">Improvements</h4>
-<ul>
-<li>MergeScheduler can now provide an executor for intra-merge parallelism. The first implementation is the ConcurrentMergeScheduler.</li>
-<li>Upgrade icu4j to version 74.2.</li>
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>Use RWLock to access LRUQueryCache to reduce contention.</li>
-<li>Speedup multi-segment HNSW graph search for diversifying child kNN queries.</li>
-<li>Add a MemorySegment Vector scorer - for scoring without copying on-heap. This can improve search latency by almost 2x for byte vectors.</li>
-<li>Switch to using optimized, primitive collections where possible to improve performance and heap utilization.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/9_11_0/changes/Changes.html">https://lucene.apache.org/core/9_11_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-9100-available">
-      20 February 2024 - Apache Lucene™ 9.10.0 available
-      <a class="headerlink" href="#apache-lucenetm-9100-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.10.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-9100-release-highlights">Lucene 9.10.0 Release Highlights:</h3>
-<h4 id="new-features">New features</h4>
-<ul>
-<li>Support for similarity-based vector searches, ie. finding all nearest neighbors whose similarity is greater than a configured threshold from a query vector. See [Byte|Float]VectorSimilarityQuery.</li>
-<li>Index sorting is now compatible with block joins. See IndexWriterConfig#setParentField.</li>
-<li>MMapDirectory now takes advantage of the now finalized JDK foreign memory API internally when running on Java 22 (or later). This was only supported with Java 19 to 21 until now.</li>
-<li>SIMD vectorization now takes advantage of JDK vector incubator on Java 22. This was only supported with Java 20 or 21 until now.</li>
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>Tail postings are now encoded using group-varint. This yielded speedups on queries that match lots of terms that have short postings lists in Lucene's nightly benchmarks.</li>
-<li>Range queries on points now exit earlier when evaluating a segment that has no matches. This will improve performance when intersected with other queries that have a high up-front cost such as multi-term queries.</li>
-<li>BooleanQueries that mix SHOULD and FILTER clauses now propagate minimum competitive scores to the SHOULD clauses, yielding significant speedups for top-k queries sorted by descending score.</li>
-<li>IndexSearcher#count has been optimized on pure disjunctions of two term queries.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/9_10_0/changes/Changes.html">https://lucene.apache.org/core/9_10_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-8113-available">
-      8 February 2024 - Apache Lucene™ 8.11.3 available
-      <a class="headerlink" href="#apache-lucenetm-8113-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.3.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-8113-release-highlights">Lucene 8.11.3 Release Highlights:</h3>
-<ul>
-<li>A number of bugs in polygon tessellating have been fixed.</li>
-<li>GC Load during indexing has been reduced by estimating FST BysteStore block size.</li>
-<li>BKD trees will no longer possibly overflow when more than 4 billion points are added.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/8_11_3/changes/Changes.html">https://lucene.apache.org/core/8_11_3/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-992-available">
-      29 January 2024 - Apache Lucene™ 9.9.2 available
-      <a class="headerlink" href="#apache-lucenetm-992-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.9.2.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-992-release-highlights">Lucene 9.9.2 Release Highlights:</h3>
-<h4 id="bug-fixes">Bug fixes</h4>
-<ul>
-<li>Fix NPE when sampling for quantization in Lucene99HnswScalarQuantizedVectorsFormat (Ben Trent)</li>
-<li>Rollback the tmp storage of BytesRefHash to -1 after sort (Guo Feng)</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/9_9_2/changes/Changes.html">https://lucene.apache.org/core/9_9_2/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-991-available">
-      16 December 2023 - Apache Lucene™ 9.9.1 available
-      <a class="headerlink" href="#apache-lucenetm-991-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.9.1.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-991-release-highlights">Lucene 9.9.1 Release Highlights:</h3>
-<h4 id="bug-fixes">Bug fixes</h4>
-<ul>
-<li>JVM SIGSEGV crash when compiling computeCommonPrefixLengthAndBuildHistogram (Chris Hegarty)</li>
-<li>Push and pop OutputAccumulator as IntersectTermsEnumFrames are pushed and popped (Guo Feng, Mike McCandless)</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/9_9_1/changes/Changes.html">https://lucene.apache.org/core/9_9_1/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-990-available">
-      4 December 2023 - Apache Lucene™ 9.9.0 available
-      <a class="headerlink" href="#apache-lucenetm-990-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.9.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library
-written entirely in Java. It is a technology suitable for nearly any
-application that requires structured search, full-text search, faceting,
-nearest-neighbor search across high-dimensionality vectors, spell
-correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release is
-available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-990-release-highlights">Lucene 9.9.0 Release Highlights:</h3>
-<h4 id="new-features">New Features</h4>
-<ul>
-<li>Add int8 scalar quantization to the HNSW vector format. This
-   optionally allows for more compact lossy storage for the vectors,
-   requiring approximately 4x less memory for fast HNSW search.</li>
-<li>HNSW graph now can be merged with multiple threads, leveraging the
-   same infrastructure that inter-segment concurrency utilizes.</li>
-</ul>
-<h4 id="improvements">Improvements</h4>
-<ul>
-<li>Speed up Panama vector support, use FMA, and test improvements. </li>
-<li>FSTCompiler can now approximately limit how much RAM it uses to share 
-   suffixes during FST construction using the suffixRAMLimitMB method. </li>
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>Faster top-level conjunctions on term queries when sorting by
-   descending score.</li>
-<li>Change Postings back to using FOR in Lucene99PostingsFormat. Freqs,
-   positions and offset keep using PFOR.</li>
-</ul>
-<p>... plus a multitude of helpful bug fixes!</p>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/9_9_0/changes/Changes.html">https://lucene.apache.org/core/9_9_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-980-available">
-      28 September 2023 - Apache Lucene™ 9.8.0 available
-      <a class="headerlink" href="#apache-lucenetm-980-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.8.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-980-release-highlights">Lucene 9.8.0 Release Highlights:</h3>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>Faster computation of top-k hits on boolean queries. Lucene's nightly benchmarks report a 20%-30% speedup for disjunctive queries and a 11%-13% speedup for conjunctive queries since Lucene 9.7. Disjunctive queries with many and/or high-frequency terms should see even higher speedups.</li>
-<li>Faster computation of top-k hits when sorting by field. Lucene's nightly benchmarks report speedups between 7% and 33% since 9.7 depending on the type and cardinality of the field that is used for sorting.</li>
-<li>Faster indexing of numeric doc values when index sorting is turned on.</li>
-<li>Expressions now evaluate all arguments in a fully lazy manner, which may provide significant speedups and throughput improvements for heavy expression users.</li>
-</ul>
-<h4 id="api-changes">API Changes</h4>
-<ul>
-<li>Move max vector dims limit to Codec (Mayya Sharipova)</li>
-</ul>
-<h4 id="new-features">New features</h4>
-<ul>
-<li>Introduced LeafCollector#finish, a hook that runs after collection has finished running on a leaf.</li>
-<li>Add "KnnCollector" to "LeafReader" and "KnnVectorReader" so that custom collection of vector search results can be provided. The first custom collector provides "ToParentBlockJoin[Float|Byte]KnnVectorQuery" joining child vector documents with their parent documents.</li>
-<li>Add support for recursive graph bisection, also called bipartite graph partitioning, and often abbreviated BP, an algorithm for reordering doc IDs that results in more compact postings and faster queries, especially conjunctions.</li>
-</ul>
-<h4 id="bug-fixes">Bug fixes</h4>
-<ul>
-<li>Fix HNSW graph search bug that potentially leaked unapproved docs</li>
-<li>Fix bug in TermsEnum#seekCeil on doc values terms enums that causes IndexOutOfBoundsException.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/9_8_0/changes/Changes.html">https://lucene.apache.org/core/9_8_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-970-available">
-      25 June 2023 - Apache Lucene™ 9.7.0 available
-      <a class="headerlink" href="#apache-lucenetm-970-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.7.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-970-release-highlights">Lucene 9.7.0 Release Highlights:</h3>
-<h4 id="new-features">New features</h4>
-<ul>
-<li>
-<p>The new IndexWriter#updateDocuments(Query, Iterable) allows updating multiple documents that match a query at the same time.</p>
-</li>
-<li>
-<p>Function queries can now compute similarity scores between kNN vectors.</p>
-</li>
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>
-<p>KNN indexing and querying can now take advantage of vectorization for distance computation between vectors. To enable this, use exactly Java 20 or 21, and pass --add-modules jdk.incubator.vector as a command-line parameter to the Java program.</p>
-</li>
-<li>
-<p>KNN queries now run concurrently if the IndexSearcher has been created with an executor.</p>
-</li>
-<li>
-<p>Queries sorted by field are now able to dynamically prune hits only using the after value. This yields major speedups when paginating deeply.</p>
-</li>
-<li>
-<p>Reduced merge-time overhead of computing the number of soft deletes.</p>
-</li>
-</ul>
-<h4 id="changes-in-runtime-behavior">Changes in runtime behavior</h4>
-<ul>
-<li>KNN vectors are now disallowed to have non-finite values such as NaN or ±Infinity.</li>
-</ul>
-<h4 id="bug-fixes">Bug fixes</h4>
-<ul>
-<li>
-<p>Backward reading is no longer an adversarial case for BufferedIndexInput, used by NIOFSDirectory and SimpleFSDirectory. This addresses a performance bug when performing terms dictionary lookups with either of these directories.</p>
-</li>
-<li>
-<p>GraphTokenStreamFiniteStrings#articulationPointsRecurse may no longer overflow the stack.</p>
-</li>
-<li>
-<p>... plus a number of helpful bug fixes!</p>
-</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/9_7_0/changes/Changes.html">https://lucene.apache.org/core/9_7_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-960-available">
-      9 May 2023 - Apache Lucene™ 9.6.0 available
-      <a class="headerlink" href="#apache-lucenetm-960-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.6.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-960-release-highlights">Lucene 9.6.0 Release Highlights:</h3>
-<ul>
-<li>Introduce a new KeywordField for simple and efficient filtering, sorting and faceting.</li>
-<li>Add support for Java 20 foreign memory API. If exactly Java 19 or 20 is used, MMapDirectory will mmap Lucene indexes in chunks of 16 GiB (instead of 1 GiB) and indexes closed while queries are running can no longer crash the JVM.</li>
-<li>Improved performance for TermInSetQuery, PrefixQuery, WildcardQuery and TermRangeQuery</li>
-<li>Lower memory usage for BloomFilteringPostingsFormat</li>
-<li>Faster merges for HNSW indexes</li>
-<li>Improvements to concurrent indexing throughput under heavy load</li>
-<li>Correct equals implementation in SynonymQuery</li>
-<li>'explain' is now implemented on TermAutomatonQuery</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/9_6_0/changes/Changes.html">https://lucene.apache.org/core/9_6_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-950-available">
-      30 January 2023 - Apache Lucene™ 9.5.0 available
-      <a class="headerlink" href="#apache-lucenetm-950-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.5.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-950-release-highlights">Lucene 9.5.0 Release Highlights:</h3>
-<h4 id="new-features">New features</h4>
-<ul>
-<li>Added KnnByteVectorField and ByteVectorQuery that are specialized for indexing and querying byte-sized vectors. Deprecated KnnVectorField, KnnVectorQuery and LeafReader#getVectorValues in favour of the newly introduced KnnFloatVectorField, KnnFloatVectorQuery and LeafReader#getFloatVectorValues that are specialized for float vectors.</li>
-<li>Added IntField, LongField, FloatField and DoubleField: easy to use numeric fields that perform well both for filtering and sorting.</li>
-<li>Support for Java 19 foreign memory access ("project Panama") was enabled by default removing the need to provide the "--enable-preview" flag.</li>
-<li>Added ByteWritesTrackingDirectoryWrapper to expose metrics for bytes merged, flushed, and overall write amplification factor.</li>
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>Improved storage efficiency of connections in the HNSW graph used for vector search</li>
-<li>Added  new stored fields and term vectors interfaces: IndexReader#storedFields and IndexReader#termVectors. These do not rely upon ThreadLocal storage for each index segment, which can greatly reduce RAM requirements when there are many threads and/or segments.</li>
-<li>Several improvements were made to IndexSortSortedNumericDocValuesRangeQuery including query execution optimization with points for descending sorts and BoundedDocIdSetIterator construction sped up using bkd binary search.</li>
-</ul>
-<h4 id="other">Other</h4>
-<ul>
-<li>Moved DocValuesNumbersQuery from sandbox to NumericDocValuesField#newSlowSetQuery</li>
-<li>Fix exponential runtime for nested BooleanQuery#rewrite with non scoring clauses</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/9_5_0/changes/Changes.html">https://lucene.apache.org/core/9_5_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-942-available">
-      21 November 2022 - Apache Lucene™ 9.4.2 available
-      <a class="headerlink" href="#apache-lucenetm-942-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.4.2.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-942-release-highlights">Lucene 9.4.2 Release Highlights:</h3>
-<ul>
-<li>Fixed integer overflow when opening segments containing more than ~16M KNN vectors.</li>
-<li>Fixed cost computation of BitSets created via DocIdSetBuilder, such as for multi-term queries. This may improve performance of multi-term queries.</li>
-<li>CheckIndex now verifies the consistency of KNN vectors more thoroughly.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/9_4_2/changes/Changes.html">https://lucene.apache.org/core/9_4_2/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-941-available">
-      24 October 2022 - Apache Lucene™ 9.4.1 available
-      <a class="headerlink" href="#apache-lucenetm-941-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.4.1.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-941-release-highlights">Lucene 9.4.1 Release Highlights:</h3>
-<ul>
-<li>When reading large segments, the kNN vectors format could fail with a validation error, preventing further writes or searches on the index. This bug is now fixed. Only version 9.4.0 was affected, so it is recommended to skip 9.4.0 if you are using kNN vectors.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/9_4_1/changes/Changes.html">https://lucene.apache.org/core/9_4_1/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-940-available">
-      30 September 2022 - Apache Lucene™ 9.4.0 available
-      <a class="headerlink" href="#apache-lucenetm-940-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.4.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-940-release-highlights">Lucene 9.4.0 Release Highlights:</h3>
-<h4 id="new-features">New features</h4>
-<ul>
-<li>Added ShapeDocValues/Field, a unified abstraction to represent existing types: XY and lat/long.</li>
-<li>FacetSets can now be filtered using a Query via MatchingFacetSetCounts.</li>
-<li>SortField now allows control over whether to apply index-sort optimizations.</li>
-<li>Support for Java 19 foreign memory access ("project Panama") was added. Applications started with command line parameter "java --enable-preview" will automatically use the new foreign memory API of Java 19 to access indexes on disk with MMapDirectory. This is an opt-in feature and requires explicit Java command line flag passed to your application's Java process (e.g., modify startup parameters of Solr or Elasticsearch/Opensearch)! When enabled, Lucene logs a notice using java.util.l [...]
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>Added support for dynamic pruning to queries sorted by a string field that is indexed with both terms and SORTED or SORTED_SET doc values. This can lead to dramatic speedups when applicable.</li>
-<li>TermInSetQuery is optimized for the case when one of its terms matches all docs in a segment, and it now provides cost estimation, making it usable with IndexOrDocValuesQuery for better query planning.</li>
-<li>KnnVector fields can now be stored with reduced (8-bit) precision, saving storage and yielding a small query latency improvement.</li>
-</ul>
-<h4 id="other">Other</h4>
-<ul>
-<li>KnnVector fields' HNSW graphs are now created incrementally when new documents are added, rather than all-at-once when flushing. This yields more consistent predictable behavior at the cost of an overall increase in indexing time.</li>
-<li>randomizedtesting dependency upgraded to 2.8.1</li>
-<li>addIndexes(CodecReader) now respects MergePolicy and MergeScheduler, enabling it to do its work concurrently.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/9_4_0/changes/Changes.html">https://lucene.apache.org/core/9_4_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-930-available">
-      29 July 2022 - Apache Lucene™ 9.3.0 available
-      <a class="headerlink" href="#apache-lucenetm-930-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.3.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-930-release-highlights">Lucene 9.3.0 Release Highlights:</h3>
-<ul>
-<li>Merge on full flush is enabled now by default with a timeout of 500ms, giving the merge policy a chance to merge NRT segments together before publishing a new point-in-time view of the IndexReader. This should give queries a small performance boost in the near-realtime case, especially terms-dictionary-intensive queries like fuzzy queries.</li>
-<li>Add getAllChildren functionality to facets.</li>
-<li>Added facetsets module for high dimensional (hyper-rectangle) faceting. </li>
-<li>Top-level two-clause disjunctions sorted by score now use the block-max MAXSCORE algorithm, which introduced a 40%-75% speedup in our benchmarks.</li>
-<li>BooleanQuery can return quick counts for simple boolean queries.</li>
-<li>When running KnnVectorQuery with a filter, reuse the cached filter bit set.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/9_3_0/changes/Changes.html">https://lucene.apache.org/core/9_3_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-8112-available">
-      17 June 2022 - Apache Lucene™ 8.11.2 available
-      <a class="headerlink" href="#apache-lucenetm-8112-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.2.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-8112-release-highlights">Lucene 8.11.2 Release Highlights:</h3>
-<p>Bug fixes</p>
-<ul>
-<li>LUCENE-10564: Make sure SparseFixedBitSet#or updates ramBytesUsed.</li>
-<li>LUCENE-10477: Highlighter: WeightedSpanTermExtractor.extractWeightedSpanTerms to Query#rewrite
-  multiple times if necessary.</li>
-</ul>
-<p>Optimizations</p>
-<ul>
-<li>LUCENE-10481: FacetsCollector will not request scores if it does not use them.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/8_11_2/changes/Changes.html">https://lucene.apache.org/core/8_11_2/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-920-available">
-      23 May 2022 - Apache Lucene™ 9.2.0 available
-      <a class="headerlink" href="#apache-lucenetm-920-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.2.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-920-release-highlights">Lucene 9.2.0 Release Highlights:</h3>
-<ul>
-<li>Numerous improvements to indexing and query performance for KNN vectors</li>
-<li>More efficient implementations for count operations on range queries</li>
-<li>A new FieldExistsQuery that chooses the best index structures to run over for you</li>
-<li>A new Persian stemmer</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/9_2_0/changes/Changes.html">https://lucene.apache.org/core/9_2_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-910-available">
-      22 March 2022 - Apache Lucene™ 9.1.0 available
-      <a class="headerlink" href="#apache-lucenetm-910-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.1.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-910-release-highlights">Lucene 9.1.0 Release Highlights:</h3>
-<h4 id="new-features">New features</h4>
-<ul>
-<li>Lucene JARs are now proper Java modules, with module descriptors and dependency information</li>
-<li>Support for filtering in nearest-neighbor vector search</li>
-<li>Support for intervals queries in the standard query syntax</li>
-<li>A new token filter SpanishPluralStemFilter for precise stemming of Spanish plurals</li>
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>Up to 30% improvement in index throughput for high-dimensional vectors </li>
-<li>Up to 10% faster nearest neighbor searches on high-dimensional vectors</li>
-<li>Faster execution of "count" searches across different query types</li>
-<li>Faster counting for taxonomy facets</li>
-<li>Several other search speed-ups, including improvements to PointRangeQuery, MultiRangeQuery, and CoveringRangeQuery</li>
-</ul>
-<h4 id="other">Other</h4>
-<ul>
-<li>The test framework is now a module, so all classes have been moved from to org.apache.lucene.tests.* to avoid package name conflicts</li>
-<li>Lucene now faithfully implements the HNSW algorithm for nearest neighbor search by supporting multiple graph layers</li>
-</ul>
-<p>… plus a number of helpful bug fixes!</p>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/9_1_0/changes/Changes.html">https://lucene.apache.org/core/9_1_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-8111-available">
-      16 December 2021 - Apache Lucene™ 8.11.1 available
-      <a class="headerlink" href="#apache-lucenetm-8111-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.1.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains one bug fix. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-8111-release-highlights">Lucene 8.11.1 Release Highlights:</h3>
-<ul>
-<li>Log4j is upgraded to v2.16.0 to mitigate CVE-2021-44228 (for Luke users)</li>
-</ul>
-    <h2 id="apache-lucenetm-900-available">
-      7 December 2021 - Apache Lucene™ 9.0.0 available
-      <a class="headerlink" href="#apache-lucenetm-900-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 9.0.0.</p>
-<p>Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-900-release-highlights">Lucene 9.0.0 Release Highlights:</h3>
-<h4 id="system-requirements">System requirements</h4>
-<ul>
-<li>Lucene 9.0 requires JDK 11 or newer</li>
-</ul>
-<h4 id="new-features">New features</h4>
-<ul>
-<li>Support for indexing high-dimensionality numeric vectors to perform nearest-neighbor search, using the Hierarchical Navigable Small World graph algorithm</li>
-<li>New Analyzers for Serbian, Nepali, and Tamil languages</li>
-<li>IME-friendly autosuggest for Japanese</li>
-<li>Snowball 2, adding Hindi, Indonesian, Nepali, Serbian, Tamil, and Yiddish stemmers</li>
-<li>New normalization/stemming for Swedish and Norwegian</li>
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>Up to 400% faster taxonomy faceting</li>
-<li>10-15% faster indexing of multi-dimensional points</li>
-<li>Several times faster sorting on fields that are indexed with points. This optimization used to be an opt-in in late 8.x releases and is now opt-out as of 9.0.</li>
-<li>ConcurrentMergeScheduler now assumes fast I/O, likely improving indexing speed in case where heuristics would incorrectly detect whether the system had modern I/O or not</li>
-<li>Encoding of postings lists changed from FOR-delta to PFOR-delta to save further disk space</li>
-</ul>
-<h4 id="other">Other</h4>
-<ul>
-<li>File formats have all been changed from big-endian order to little endian order</li>
-<li>Lucene 9 no longer has split packages. This required renaming some packages outside of the lucene-core JAR, so you will need to adjust some imports accordingly.</li>
-<li>Using Lucene 9 with the module system should be considered experimental. We expect to make progress on this in future 9.x releases.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/9_0_0/changes/Changes.html">https://lucene.apache.org/core/9_0_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-8110-available">
-      16 November 2021 - Apache Lucene™ 8.11.0 available
-      <a class="headerlink" href="#apache-lucenetm-8110-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-8110-release-highlights">Lucene 8.11.0 Release Highlights:</h3>
-<ul>
-<li>Facets now properly ignore deleted documents when accumulating facet counts for all documents.</li>
-<li>CheckIndex can run concurrently.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/8_11_0/changes/Changes.html">https://lucene.apache.org/core/8_11_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-8101-available">
-      18 October 2021 - Apache Lucene™ 8.10.1 available
-      <a class="headerlink" href="#apache-lucenetm-8101-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.10.1.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains bug fixes. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-8101-release-highlights">Lucene 8.10.1 Release Highlights:</h3>
-<h4 id="bug-fixes">Bug fixes</h4>
-<ul>
-<li>MultiCollector now handles single leaf collector that wants to skip low-scoring hits but the combined score mode doesn't allow it.</li>
-<li>Fix for sort optimization with search_after that was wrongly skipping document whose values are equal to the last value of the previous page.</li>
-<li>Fix for sort optimization with a chunked bulk scorer that was wrongly skipping documents.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/8_10_1/changes/Changes.html">https://lucene.apache.org/core/8_10_1/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-8100-available">
-      27 September 2021 - Apache Lucene™ 8.10.0 available
-      <a class="headerlink" href="#apache-lucenetm-8100-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.10.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-8100-release-highlights">Lucene 8.10.0 Release Highlights:</h3>
-<h4 id="new-features">New features</h4>
-<ul>
-<li>Multi-valued fields are now supported in numeric range facet counting</li>
-<li>Added new analyzer for Telugu</li>
-<li>Near-real-time readers opened from an IndexCommit can now sort their leaves</li>
-<li>SimpleText codec now implements skipping for its postings lists</li>
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>Performance improvements for faceting, including a new protected API to control which fields are counted for drill-down during drill sideways, and optimized drill sideways iterating</li>
-<li>RegexpQuery's detection of adversarial (ReDoS) regular expressions is improved, catching exotic cases that it missed before, and throwing TooComplexToDeterminizeException</li>
-<li>Speedup for computing the leading prefix and trailing suffix from an Automaton, and for managing powersets during determinize</li>
-<li>Speedups for stored fields retrieval with the default codec (BEST_SPEED)</li>
-<li>IndexWriter uses less RAM when buffering documents, especially in the case of many unique fields</li>
-<li>forceMerge will now merge any number of segments at once, making it much faster in many cases</li>
-<li>Compression improvements for docvalues storage</li>
-</ul>
-<p>... plus a number of exciting bug fixes!</p>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/8_10_0/changes/Changes.html">https://lucene.apache.org/core/8_10_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-890-available">
-      16 June 2021 - Apache Lucene™ 8.9.0 available
-      <a class="headerlink" href="#apache-lucenetm-890-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.9.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-890-release-highlights">Lucene 8.9.0 Release Highlights:</h3>
-<ul>
-<li>Compression was added to SortedSet DocValues, which allowed to significantly reduce their size on disk.</li>
-<li>BM25FQuery was extended to handle similarities beyond BM25Similarity. It was renamed to CombinedFieldQuery to reflect its more general scope.</li>
-<li>A new PatternTypingFilter was added to allow setting a type attribute on tokens based on a configured set of regular expressions.</li>
-<li>An option was added to supply a custom leaf sorter for IndexWriter and DirectoryReader, which allows to speed up sort queries with a provided sort criteria.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/8_9_0/changes/Changes.html">https://lucene.apache.org/core/8_9_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-882-available">
-      12 April 2021 - Apache Lucene™ 8.8.2 available
-      <a class="headerlink" href="#apache-lucenetm-882-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.8.2.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains three bug fixes. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-882-release-highlights">Lucene 8.8.2 Release Highlights:</h3>
-<ul>
-<li>LUCENE-9870: Fix Circle2D intersectsLine t-value (distance) range clamp</li>
-<li>LUCENE-9744: NPE on a degenerate query in MinimumShouldMatchIntervalsSource$MinimumMatchesIterator.getSubMatches().</li>
-<li>LUCENE-9762: DoubleValuesSource.fromQuery (also used by FunctionScoreQuery.boostByQuery) could throw an exception when the query implements TwoPhaseIterator and when the score is requested repeatedly</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/8_8_2/changes/Changes.html">https://lucene.apache.org/core/8_8_2/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-881-available">
-      22 February 2021 - Apache Lucene™ 8.8.1 available
-      <a class="headerlink" href="#apache-lucenetm-881-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.8.1.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-881-release-highlights">Lucene 8.8.1 Release Highlights:</h3>
-<p>No changes from 8.8.0</p>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/8_8_1/changes/Changes.html">https://lucene.apache.org/core/8_8_1/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-880-available">
-      29 January 2021 - Apache Lucene™ 8.8.0 available
-      <a class="headerlink" href="#apache-lucenetm-880-available" title="Permanent link">¶</a>
-    </h2>
-    <p>29/01/2021, Apache Lucene™ 8.8 available
-The Lucene PMC is pleased to announce the release of Apache Lucene 8.8</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="http://lucene.apache.org/core/mirrors-core-latest-redir.html">http://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Lucene 8.8 Release Highlights:
-LatLonPoint query that accepts an array of LatLonGeometries, support for spatial relationships, </p>
-<p>XYPoint query that accepts an array of XYGeometries</p>
-<p>Doc values now allow configuring how to trade compression for retrieval speed</p>
-<p>Further details of changes are available in the change log available at:
-<a href="http://lucene.apache.org/core/8_8_0/changes/Changes.html">http://lucene.apache.org/core/8_8_0/changes/Changes.html</a></p>
-<p>Please report any feedback to the mailing lists:</p>
-<p><a href="http://lucene.apache.org/core/discussion.html">http://lucene.apache.org/core/discussion.html</a></p>
-<p>Note: The Apache Software Foundation uses an extensive mirroring network for distributing releases. It is possible that the mirror you are using may not have replicated the release yet. If that is the case, please try another mirror. This also applies to Maven access.</p>
-    <h2 id="apache-lucenetm-870-available">
-      3 November 2020 - Apache Lucene™ 8.7.0 available
-      <a class="headerlink" href="#apache-lucenetm-870-available" title="Permanent link">¶</a>
-    </h2>
-    <p>03/11/2020, Apache Lucene™ 8.7 available
-The Lucene PMC is pleased to announce the release of Apache Lucene 8.7.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="http://lucene.apache.org/core/mirrors-core-latest-redir.html">http://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Lucene 8.7 Release Highlights:
-Better compression of stored fields. Stored fields now use dictionaries in order to improve the compression ratio when there is a lot of redundancy across documents. This works for both the BEST_SPEED and the BEST_COMPRESSION modes.</p>
-<p>Faster sorting by field. When a doc-value field is also indexed with points, Lucene now takes advantage of this points index in order to skip documents whose sort value is not competitive.</p>
-<p>Faster flushing of stored fields when index sorting is enabled. This can significantly speed up indexing when a non-negligible amount of data is stored in the index and index sorting is enabled.</p>
-<p>Further details of changes are available in the change log available at:
-<a href="http://lucene.apache.org/core/8_7_0/changes/Changes.html">http://lucene.apache.org/core/8_7_0/changes/Changes.html</a></p>
-<p>Please report any feedback to the mailing lists:</p>
-<p><a href="http://lucene.apache.org/core/discussion.html">http://lucene.apache.org/core/discussion.html</a></p>
-<p>Note: The Apache Software Foundation uses an extensive mirroring network for distributing releases. It is possible that the mirror you are using may not have replicated the release yet. If that is the case, please try another mirror. This also applies to Maven access.</p>
-    <h2 id="apache-lucenetm-863-available">
-      7 October 2020 - Apache Lucene™ 8.6.3 available
-      <a class="headerlink" href="#apache-lucenetm-863-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.6.3.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains no additional bug fixes over the previous version 8.6.2. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-    <h2 id="apache-lucenetm-862-available">
-      1 September 2020 - Apache Lucene™ 8.6.2 available
-      <a class="headerlink" href="#apache-lucenetm-862-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.6.2.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains one bug fix. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-862-bug-fixes">Lucene 8.6.2 Bug Fixes:</h3>
-<ul>
-<li>LUCENE-9478: IndexWriter leaked about 500 byte of heap space for each full-flush, getReader or commit. This was a regression in 6.8.0</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/8_6_2/changes/Changes.html">https://lucene.apache.org/core/8_6_2/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-861-available">
-      13 August 2020 - Apache Lucene™ 8.6.1 available
-      <a class="headerlink" href="#apache-lucenetm-861-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.6.1.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-861-release-highlights">Lucene 8.6.1 Release Highlights:</h3>
-<ul>
-<li>LUCENE-9443: The UnifiedHighlighter was closing the underlying reader when there were multiple term-vector fields.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/8_6_1/changes/Changes.html">https://lucene.apache.org/core/8_6_1/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-860-available">
-      15 July 2020 - Apache Lucene™ 8.6.0 available
-      <a class="headerlink" href="#apache-lucenetm-860-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.6.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-860-release-highlights">Lucene 8.6.0 Release Highlights:</h3>
-<ul>
-<li>API change in: SimpleFSDireectory, IndexWriterConfig, MergeScheduler, SortFields, SimpleBindings, QueryVisitor, DocValues, CodecUtil.</li>
-<li>New: IndexWriter merge-on-commit feature to selectively merge small segments on commit, subject to a configurable timeout, to improve search performance by reducing the number of small segments for searching.</li>
-<li>New: Grouping by range based on DoubleValueSource and LongValueSource.</li>
-<li>Optimizations: BKD trees and index, DoubleValuesSource/QueryValueSource, UsageTrackingQueryingCachingPolicy, FST, Geometry queries, Points, UniformSplit.</li>
-<li>Others: Ukrainian analyzer, checksums verification, resource leaks fixes.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/8_6_0/changes/Changes.html">https://lucene.apache.org/core/8_6_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-852-available">
-      26 May 2020 - Apache Lucene™ 8.5.2 available
-      <a class="headerlink" href="#apache-lucenetm-852-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.5.2.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains one bug fixes. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-852-release-highlights">Lucene 8.5.2 Release Highlights:</h3>
-<ul>
-<li>LUCENE-9350: Don't cache automata on FuzzyQuery</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/8_5_2/changes/Changes.html">https://lucene.apache.org/core/8_5_2/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-773-available">
-      28 April 2020 - Apache Lucene™ 7.7.3 available
-      <a class="headerlink" href="#apache-lucenetm-773-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.7.3.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains 1 bugfix in Lucene. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/7_7_3/changes/Changes.html">https://lucene.apache.org/core/7_7_3/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-851-available">
-      16 April 2020 - Apache Lucene™ 8.5.1 available
-      <a class="headerlink" href="#apache-lucenetm-851-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.5.1.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains one bug fix. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<p>Lucene 8.5.1 Bug Fixes:</p>
-<p>LUCENE-9300: Index corruption with doc values updates and addIndexes.</p>
-<p>Further details of changes are available in the change log available at: </p>
-<p><a href="https://lucene.apache.org/core/8_5_1/changes/Changes.html">https://lucene.apache.org/core/8_5_1/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-850-available">
-      24 March 2020 - Apache Lucene™ 8.5.0 available
-      <a class="headerlink" href="#apache-lucenetm-850-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.5.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-850-release-highlights">Lucene 8.5.0 Release Highlights:</h3>
-<ul>
-<li>XYPointField allows you to index points in flat X,Y space and efficiently find documents that fall within a bounding box, distance or arbitrary polygon</li>
-<li>New query builders on LatLonShape allow you to efficiently find documents with a specific relation to a point or polygon</li>
-<li>You can now store up to 16 data dimensions in a Point field</li>
-<li>KoreanTokenizer supports custom dictionaries</li>
-<li>Binary doc values are now compressed, and term dictionaries have improved compression</li>
-<li>Index flushes are up to 20% faster if all docvalues updates are updating a single field to the same value</li>
-<li>The index of stored fields and term vectors is now stored off-heap</li>
-<li>Query parsers based on QueryBuilder can boost particular terms or synonyms by setting BoostAttribute values on a token stream</li>
-<li>Intervals queries correctly handle repeated subterms in ordered and unordered sources</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/8_5_0/changes/Changes.html">https://lucene.apache.org/core/8_5_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-841-available">
-      13 January 2020 - Apache Lucene™ 8.4.1 available
-      <a class="headerlink" href="#apache-lucenetm-841-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.4.1.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-841-release-highlights">Lucene 8.4.1 Release Highlights:</h3>
-<p>(No Changes since 8.4.0)</p>
-    <h2 id="apache-lucenetm-840-available">
-      29 December 2019 - Apache Lucene™ 8.4.0 available
-      <a class="headerlink" href="#apache-lucenetm-840-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.4.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-840-release-highlights">Lucene 8.4.0 Release Highlights:</h3>
-<ul>
-<li>LatLonShape now supports the "CONTAINS" relation, which enables to find all indexed shapes that contain the query shape.</li>
-<li>Concurrent search is getting more efficient by allowing collectors to share information across threads in order to more efficiently skip non-competitive hits.</li>
-<li>Faster FST lookups on dense nodes.</li>
-<li>Postings are now decoded using SIMD instructions.</li>
-<li>LRUQueryCache includes new heuristics that prevent caching from hurting latency too much.</li>
-<li>LatLonShape builds a more efficient tree that is expected to translate into search speed improvements.</li>
-<li>BaseDirectoryReader no longer sums up document counts across leaves eagerly, allowing for more efficient reader views that hide a subset of documents.</li>
-<li>The index on top of BKD trees is now stored off-heap with MMapDirectory.</li>
-<li>Simple Intervals queries support highlighting.</li>
-<li>Reading DocValues can be interrupted when timeout is exceeded.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/8_4_0/changes/Changes.html">https://lucene.apache.org/core/8_4_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-831-available">
-      3 December 2019 - Apache Lucene™ 8.3.1 available
-      <a class="headerlink" href="#apache-lucenetm-831-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.3.1.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-831-release-highlights">Lucene 8.3.1 Release Highlights:</h3>
-<ul>
-<li>Bugfix: MultiTermIntervalsSource.visit() was not calling back to its visitor</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/8_3_1/changes/Changes.html">https://lucene.apache.org/core/8_3_1/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-830-available">
-      2 November 2019 - Apache Lucene™ 8.3.0 available
-      <a class="headerlink" href="#apache-lucenetm-830-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.3.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-830-release-highlights">Lucene 8.3.0 Release Highlights:</h3>
-<ul>
-<li>New SpanishMinimalStemFilter</li>
-<li>New "export all terms and doc freqs" feature to Luke with delimiters</li>
-<li>Composite Matches from multiple subqueries now allow access to their submatches, and a new NamedMatches API allows marking of subqueries and a simple way to find which subqueries have matched on a given</li>
-<li>Range Query For Multiple Connected Ranges</li>
-<li>LatLonDocValuesPointInPolygonQuery for LatLonDocValuesField</li>
-<li>New UniformSplitPostingsFormat (name "UniformSplit") primarily benefiting in simplicity and extensibility</li>
-<li>New STUniformSplitPostingsFormat (name "SharedTermsUniformSplit") that shares a single internal term dictionary across fields</li>
-<li>DisjunctionMaxQuery more efficiently leverages impacts to skip non-competitive hits</li>
-<li>BooleanQuery with no scoring clause can now early terminate the query when the total hits is not requested</li>
-<li>Matches on wildcard queries will defer building their full disjunction until a MatchesIterator is pulled</li>
-<li>spatial-extras quad and packed quad prefix trees now index points faster</li>
-<li>Add additional leaf node level optimizations in LatLonShapeBoundingBoxQuery</li>
-<li>Improve performance of WITHIN and DISJOINT queries for Shape queries by doing just one pass whenever possible</li>
-<li>Introduce shared count based early termination across multiple slices</li>
-<li>Blocktree's seekExact now short-circuits false if the term isn't in the min-max range of the segment. Large perf gain for ID/time like data when populated sequentially</li>
-<li>Show SPI names instead of class names in Luke Analysis tab</li>
-<li>GraphTokenStreamFiniteStrings preserves all Token attributes through its finite strings TokenStreams</li>
-<li>Introduced SpanPositionRange into XML Query Parser</li>
-<li>Use a sort key instead of true distance in NearestNeighbor</li>
-<li>Tessellator labels the edges of the generated triangles whether they belong to the original polygon</li>
-<li>Use exact distance between point and bounding rectangle in FloatPointNearestNeighbor</li>
-<li>The Korean analyzer now splits tokens on boundaries between digits and alphabetic characters</li>
-<li>MoreLikeThis is biased for uncommon fields</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/8_3_0/changes/Changes.html">https://lucene.apache.org/core/8_3_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-820-available">
-      26 July 2019 - Apache Lucene™ 8.2.0 available
-      <a class="headerlink" href="#apache-lucenetm-820-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.2.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-820-release-highlights">Lucene 8.2.0 Release Highlights:</h3>
-<h4 id="api-changes">API Changes:</h4>
-<ul>
-<li>Intervals queries has been moved from the sandbox to the queries module.</li>
-</ul>
-<h4 id="new-features">New Features</h4>
-<ul>
-<li>New XYShape Field and Queries for indexing and querying general cartesian geometries.</li>
-<li>Snowball stemmer/analyzer for the Estonian language.</li>
-<li>Provide a FeatureSortfield to allow sorting search hits by descending value of a feature.</li>
-<li>Add new KoreanNumberFilter that can change Hangul character to number and process decimal point.</li>
-<li>Add doc-value support to range fields.</li>
-<li>Add monitor subproject (previously Luwak monitoring library) that allows a stream of documents to be matched against a set of registered queriesin an efficient manner.</li>
-<li>Add a numeric range query in sandbox that takes advantage of index sorting.Add a numeric range query in sandbox that takes advantage of index sorting.</li>
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>Use exponential search instead of binary search in IntArrayDocIdSet#advance method.</li>
-<li>Use incoming thread for execution if IndexSearcher has an executor. Now caller threads execute at least one search on an index even if there is an executor provided to minimize thread context switching.</li>
-<li>New storing strategy for BKD tree leaves with low cardinality that can lower storage costs and It can be used at search time to speed up queries.</li>
-<li>Load frequencies lazily only when needed in BlockDocsEnum and BlockImpactsEverythingEnum.</li>
-<li>Phrase queries now leverage impacts.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/8_2_0/changes/Changes.html">https://lucene.apache.org/core/8_2_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-772-available">
-      4 June 2019 - Apache Lucene™ 7.7.2 available
-      <a class="headerlink" href="#apache-lucenetm-772-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.7.2.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains 9 bugfixes in Lucene. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/7_7_2/changes/Changes.html">https://lucene.apache.org/core/7_7_2/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-811-available">
-      28 May 2019 - Apache Lucene™ 8.1.1 available
-      <a class="headerlink" href="#apache-lucenetm-811-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.1.1.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains no change over 8.1.0. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-    <h2 id="apache-lucenetm-810-available">
-      16 May 2019 - Apache Lucene™ 8.1.0 available
-      <a class="headerlink" href="#apache-lucenetm-810-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.1.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-810-release-highlights">Lucene 8.1.0 Release Highlights:</h3>
-<ul>
-<li>A query introspection API has been introduced.</li>
-<li>Luke, well-known GUI for inspecting Lucene indexes, now added as a Lucene module</li>
-<li>Merging dimensional points to use radix partitioning, which has also been optimized</li>
-<li>Bugfix: LatLonShapePolygonQuery returns incorrect WITHIN results with shared boundaries</li>
-<li>TieredMergePolicy#findForcedMerges now tries to create the cheapest merges</li>
-<li>Build point writers in the BKD tree only when they are needed</li>
-<li>SynonymQuery can now deboost the document frequency of each term when blending synonym scores</li>
-<li>ConstantScoreQuery can early terminate if minimum score &gt; constant score (total hits are not requested)</li>
-<li>DateRangePrefixTree can now parse more precise dates</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/8_1_0/changes/Changes.html">https://lucene.apache.org/core/8_1_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-666-available">
-      5 April 2019 - Apache Lucene™ 6.6.6 available
-      <a class="headerlink" href="#apache-lucenetm-666-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.6.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-pla</p>
-<p>This release contains no change over 6.6.4. The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.6">https://www.apache.org/dyn/closer.lua/lucene/java/6.6.6</a></p>
-    <h2 id="apache-lucenetm-800-available">
-      14 March 2019 - Apache Lucene™ 8.0.0 available
-      <a class="headerlink" href="#apache-lucenetm-800-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 8.0.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-800-release-highlights">Lucene 8.0.0 Release Highlights:</h3>
-<h4 id="query-execution">Query execution</h4>
-<p>Term queries, phrase queries and boolean queries introduced new optimization that enables efficient skipping over non-competitive documents when the total hit count is not needed. Depending on the exact query and data distribution, queries might run between a few percents slower and many times faster, especially term queries and pure disjunctions.</p>
-<p>In order to support this enhancement, some API changes have been made:
- * TopDocs.totalHits is no longer a long but an object that gives a lower bound of the actual hit count.
- * IndexSearcher's search and searchAfter methods now only compute total hit counts accurately up to 1,000 in order to enable this optimization by default.
- * Queries are now required to produce non-negative scores.</p>
-<h4 id="codecs">Codecs</h4>
-<ul>
-<li>Postings now index score impacts alongside skip data. This is how term queries optimize collection of top hits when hit counts are not needed.</li>
-<li>Doc values introduced jump tables, so that advancing runs in constant time. This is especially helpful on sparse fields.</li>
-<li>The terms index FST is now loaded off-heap for non-primary-key fields using MMapDirectory, reducing heap usage for such fields.</li>
-</ul>
-<h4 id="custom-scoring">Custom scoring</h4>
-<p>The new FeatureField allows efficient integration of static features such as a pagerank into the score. Furthermore, the new LongPoint#newDistanceFeatureQuery and LatLonPoint#newDistanceFeatureQuery methods allow boosting by recency and geo-distance respectively. These new helpers are optimized for the case when total hit counts are not needed. For instance if the pagerank has a significant weight in your scores, then Lucene might be able to skip over documents that have a low pageran [...]
-<p>Further details of changes are available in the change log available at:</p>
-<p><a href="https://lucene.apache.org/core/8_0_0/changes/Changes.html">https://lucene.apache.org/core/8_0_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-771-available">
-      1 March 2019 - Apache Lucene™ 7.7.1 available
-      <a class="headerlink" href="#apache-lucenetm-771-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.7.1.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains no change over 7.7.0. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-    <h2 id="apache-lucenetm-770-available">
-      11 February 2019 - Apache Lucene™ 7.7.0 available
-      <a class="headerlink" href="#apache-lucenetm-770-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.7.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-770-release-highlights">Lucene 7.7.0 Release Highlights:</h3>
-<ul>
-<li>Fix LatLonShape WITHIN queries that fail with Multiple search Polygons that share the dateline.</li>
-<li>LatLonShape's within and disjoint queries can return false positives with indexed multi-shapes.</li>
-<li>ExitableDirectoryReader may now time out queries that run on points such as range queries or geo queries.</li>
-<li>StandardTokenizer and UAX29URLEmailTokenizer now support Unicode 9.0, and provide Unicode UTS#51 v11.0 Emoji tokenization with the "<EMOJI>" token type.</li>
-<li>TopFieldCollector can now early-terminates queries when sorting by SortField.DOC.</li>
-<li>Speed up merging segments of points with data dimensions by only sorting on the indexed dimensions.</li>
-<li>The KoreanTokenizer no longer splits unknown words on combining diacritics and detects script boundaries more accurately with Character#UnicodeScript#of.</li>
-<li>Change LatLonShape encoding to use 4 bytes Per Dimension.</li>
-<li>BufferedUpdates now uses an optimized storage for buffering docvalues updates that can save up to 80% of the heap used compared to the previous implementation and uses non-object based datastructures.</li>
-<li>Moved to the default accepted overhead ratio for packet ints in DocValuesFieldUpdates yields an up-to 4x performance improvement when applying doc values updates.</li>
-<li>Doc-value updates get applied faster by sorting with quicksort, rather than an in-place mergesort, which needs to perform fewer swaps.</li>
-<li>Decrease I/O pressure when merging high dimensional points.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/7_7_0/changes/Changes.html">https://lucene.apache.org/core/7_7_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-760-available">
-      14 December 2018 - Apache Lucene™ 7.6.0 available
-      <a class="headerlink" href="#apache-lucenetm-760-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.6.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-760-release-highlights">Lucene 7.6.0 Release Highlights:</h3>
-<ul>
-<li>Index sorting corruption due to numeric overflow has been fixed. Indices affected by this bug can be detected by running the CheckIndex command on a 7.6+ release distribution.</li>
-<li>Better tessellation processing of Polygons including graceful exceptions for detecting invalid shapes.</li>
-<li>Points codec now supports <code>selective indexing</code>; the ability to designate dimensions as as "data only" dimensions that do not affect construction of the index.</li>
-<li>New Simple WKT Shape Parser builds lucene geometries (polygons, lines, rectangles) from WKT format.</li>
-<li>New LatLonShapeLineQuery queries indexed shapes with arbitrary lines.</li>
-<li>analyzeGraphPhrase query builder creates one phrase query per finite strings in the graph based on slop parameter.</li>
-<li>Performance in PerFieldMergeState#FilterFieldInfos has been improved from O(N) to O(1) lookup time.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/7_6_0/changes/Changes.html">https://lucene.apache.org/core/7_6_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-750-available">
-      24 September 2018 - Apache Lucene™ 7.5.0 available
-      <a class="headerlink" href="#apache-lucenetm-750-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.5.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<h3 id="lucene-750-release-highlights">Lucene 7.5.0 Release Highlights:</h3>
-<ul>
-<li>IndexWriter#deleteDocs(Query... query) applies deletes to wrong documents if the index is sorted.</li>
-<li>TieredMergePolicy now respects maxSegmentSizeMB by default when executing findForcedMerges and findForcedDeletesMerges.</li>
-<li>A new points based Shape Indexing and Searching that decomposes shapes into a triangular mesh and indexes individual triangles as a 6 dimension point.</li>
-<li>A new ByteBuffer based Directory implementation that aims to replace the deprecated RAMDirectory.</li>
-<li>The UnifiedHighlighter can now use the MatchesIterator API to highlight any query more accurately.</li>
-<li>TopFieldComparator can now stop comparing documents if the index is sorted, even if hits still need to be visited to compute the hit count.</li>
-<li>TieredMergePolicy can control how aggressively deletes should be reclaimed with the new deletesPctAllowed setting.</li>
-</ul>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/7_5_0/changes/Changes.html">https://lucene.apache.org/core/7_5_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-665-available">
-      3 July 2018 - Apache Lucene™ 6.6.5 available
-      <a class="headerlink" href="#apache-lucenetm-665-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.5.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains no change over 6.6.4. The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.5">https://www.apache.org/dyn/closer.lua/lucene/java/6.6.5</a></p>
-    <h2 id="apache-lucenetm-740-available">
-      27 June 2018 - Apache Lucene™ 7.4.0 available
-      <a class="headerlink" href="#apache-lucenetm-740-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.4.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/downloads.html">https://lucene.apache.org/core/downloads.html</a></p>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/7_4_0/changes/Changes.html">https://lucene.apache.org/core/7_4_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-664-available">
-      15 May 2018 - Apache Lucene™ 6.6.4 available
-      <a class="headerlink" href="#apache-lucenetm-664-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.4.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains no change over 6.6.3. The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.4">https://www.apache.org/dyn/closer.lua/lucene/java/6.6.4</a></p>
-    <h2 id="apache-lucenetm-731-available">
-      15 May 2018 - Apache Lucene™ 7.3.1 available
-      <a class="headerlink" href="#apache-lucenetm-731-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.3.1.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains one build change. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/mirrors-core-redir.html">https://lucene.apache.org/core/mirrors-core-redir.html</a></p>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/7_3_1/changes/Changes.html">https://lucene.apache.org/core/7_3_1/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-730-available">
-      4 April 2018 - Apache Lucene™ 7.3.0 available
-      <a class="headerlink" href="#apache-lucenetm-730-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.3.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/mirrors-core-redir.html">https://lucene.apache.org/core/mirrors-core-redir.html</a></p>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/7_3_0/changes/Changes.html">https://lucene.apache.org/core/7_3_0/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-663-available">
-      7 March 2018 - Apache Lucene™ 6.6.3 available
-      <a class="headerlink" href="#apache-lucenetm-663-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.3.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains one build change. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/mirrors-core-redir.html">https://lucene.apache.org/core/mirrors-core-redir.html</a></p>
-<p>Please read CHANGES.txt for a full list of changes:</p>
-<p><a href="https://lucene.apache.org/core/6_6_3/changes/Changes.html">https://lucene.apache.org/core/6_6_3/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-721-available">
-      15 January 2018 - Apache Lucene™ 7.2.1 available
-      <a class="headerlink" href="#apache-lucenetm-721-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.2.1.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains one bug fix. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/7_2_1/changes/Changes.html">https://lucene.apache.org/core/7_2_1/changes/Changes.html</a></p>
-<h3 id="lucene-721-bug-fix">Lucene 7.2.1 Bug Fix:</h3>
-<ul>
-<li>Fix advanceExact on SortedNumericDocValues produced by Lucene54DocValuesProducer.</li>
-</ul>
-    <h2 id="apache-lucenetm-720-available">
-      21 December 2017 - Apache Lucene™ 7.2.0 available
-      <a class="headerlink" href="#apache-lucenetm-720-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.2.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/7_2_0/changes/Changes.html">https://lucene.apache.org/core/7_2_0/changes/Changes.html</a></p>
-<h3 id="lucene-720-release-highlights">Lucene 7.2.0 Release Highlights:</h3>
-<ul>
-<li>Specific query implementations can now opt out of caching.</li>
-<li>TopFieldDocCollector can now early terminate collection of matches when the index is sorted and the total hit count is not requested.</li>
-<li>IndexWriter#flushNextBuffer gives more fine-grained control over the memory usage of IndexWriter.</li>
-<li>Fixed document accounting in IndexWriter.</li>
-<li>Query scores can be exposed in a ValuesSource using DoubleValuesSource.fromQuery().</li>
-</ul>
-    <h2 id="apache-lucenetm-555-available">
-      24 October 2017 - Apache Lucene™ 5.5.5 available
-      <a class="headerlink" href="#apache-lucenetm-555-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.5.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains one bug fix. The release is available for immediate download at:</p>
-<p><a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/5_5_5/changes/Changes.html">https://lucene.apache.org/core/5_5_5/changes/Changes.html</a></p>
-<p>This release includes a critical security fix. Details:</p>
-<ul>
-<li>Disallow resolving of external entities in queryparser/xml/CoreParser by default.</li>
-</ul>
-    <h2 id="apache-lucenetm-662-available">
-      18 October 2017 - Apache Lucene™ 6.6.2 available
-      <a class="headerlink" href="#apache-lucenetm-662-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.2.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.2">https://www.apache.org/dyn/closer.lua/lucene/java/6.6.2</a></p>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/6_6_2/changes/Changes.html">https://lucene.apache.org/core/6_6_2/changes/Changes.html</a></p>
-<p>This release includes a critical security fix. Details:</p>
-<ul>
-<li>Disallow resolving of external entities in queryparser/xml/CoreParser by default.</li>
-</ul>
-    <h2 id="apache-lucenetm-710-available">
-      17 October 2017 - Apache Lucene™ 7.1.0 available
-      <a class="headerlink" href="#apache-lucenetm-710-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.1.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below.</p>
-<p>The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/7.1.0">https://www.apache.org/dyn/closer.lua/lucene/java/7.1.0</a></p>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/7_1_0/changes/Changes.html">https://lucene.apache.org/core/7_1_0/changes/Changes.html</a></p>
-<h3 id="lucene-710-release-highlights">Lucene 7.1.0 Release Highlights:</h3>
-<ul>
-<li>
-<p>New Geo3D shapes for non-spherical planet models</p>
-</li>
-<li>
-<p>Serialization and deserialization support for Geo3D</p>
-</li>
-<li>
-<p>A new CoveringQuery, whose required number of matching clauses can be defined per document</p>
-</li>
-<li>
-<p>New BengaliAnalyzer for Bengali language</p>
-</li>
-<li>
-<p>A point based range field called LatLonBoundingBox</p>
-</li>
-<li>
-<p>FloatPointNearestNeighbor, an N-dimensional FloatPoint K-nearest-neighbor search implementation</p>
-</li>
-<li>
-<p>Faster default taxonomy cache</p>
-</li>
-<li>
-<p>Support for computing facet counts for individual numeric values via LongValueFacetCounts</p>
-</li>
-<li>
-<p>Faster geo-distance queries in case of dense single-valued fields when most documents match</p>
-</li>
-<li>
-<p>Better heuristics in IndexOrDocValuesQuery</p>
-</li>
-<li>
-<p>Optimized builds for OrdinalMap (used by SortedSetDocValuesFacetCounts and others)</p>
-</li>
-</ul>
-    <h2 id="apache-lucenetm-701-available">
-      6 October 2017 - Apache Lucene™ 7.0.1 available
-      <a class="headerlink" href="#apache-lucenetm-701-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.0.1</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains 1 bug fix since the 7.0.0 release:</p>
-<ul>
-<li>ConjunctionScorer.getChildren was failing to return all child scorers</li>
-</ul>
-<p>The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/7.0.1">https://www.apache.org/dyn/closer.lua/lucene/java/7.0.1</a></p>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/7_0_1/changes/Changes.html">https://lucene.apache.org/core/7_0_1/changes/Changes.html</a></p>
-    <h2 id="apache-lucenetm-700-available">
-      20 September 2017 - Apache Lucene™ 7.0.0 available
-      <a class="headerlink" href="#apache-lucenetm-700-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 7.0.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/7.0.0">https://www.apache.org/dyn/closer.lua/lucene/java/7.0.0</a></p>
-<p>Please read CHANGES.txt for a full list of new features and changes:</p>
-<p><a href="https://lucene.apache.org/core/7_0_0/changes/Changes.html">https://lucene.apache.org/core/7_0_0/changes/Changes.html</a></p>
-<h3 id="lucene-700-release-highlights">Lucene 7.0.0 Release Highlights:</h3>
-<ul>
-<li>
-<p>Doc values switched from random access to iterators.</p>
-</li>
-<li>
-<p>The 7.0 codec now sparsely encodes sparse doc values and length normalization factors ("norms"), which also translates to optimization in both indexing, and search on sparse values. With these changes, you finally only pay for what you actually use with doc values, in index size, indexing performance, etc.</p>
-</li>
-<li>
-<p>Index time boost for documents is now removed.</p>
-</li>
-<li>
-<p>Substantial performance gains for delete and update heavy Lucene usage; see http://blog.mikemccandless.com/2017/07/lucene-gets-concurrent-deletes-and.html for details</p>
-</li>
-<li>
-<p>Query scoring is now simpler with removal of coord factor, and query normalization.</p>
-</li>
-<li>
-<p>Classic query parser no longer splits on whitespaces.  This enables better multi-word synonym support.</p>
-</li>
-<li>
-<p>The version of Lucene that created the index segment would be recorded, along with the version that last modified the index.</p>
-</li>
-<li>
-<p>IndexWriter, used to add, update and delete documents in your index, will no longer accept broken token offsets sometimes produced by mis-behaving token filters.</p>
-</li>
-<li>
-<p>IndexReader exposes methods that are typically used to manage resources whose lifetime needs to mimic the lifetime of segments/indexes, typically caches. They have been made much less trappy.</p>
-</li>
-<li>
-<p>The dimensional points API now takes a field name up front to offer per-field points access, matching how the doc values APIs work.</p>
-</li>
-<li>
-<p>The PostingsHighlighter was removed.  Migrating to the UnifiedHighlighter should be straight-forward.</p>
-</li>
-</ul>
-<p>Apache Lucene was tested to be fully compatible with the release of Java 9 and its module system Jigsaw, coming out tomorrow on September 21st!</p>
-    <h2 id="apache-lucenetm-661-available">
-      7 September 2017 - Apache Lucene™ 6.6.1 available
-      <a class="headerlink" href="#apache-lucenetm-661-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.1</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.1">https://www.apache.org/dyn/closer.lua/lucene/java/6.6.1</a></p>
-<p>See the <a href="/core/6_6_1/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-<p>This release contains 2 bug fixes since the 6.6.0 release:</p>
-<ul>
-<li>
-<p>Documents with multiple points that should match might not match on a memory index</p>
-</li>
-<li>
-<p>A query which has only one synonym with AND as the default operator would
-   wrongly translate as an AND between the query term and the synonym</p>
-</li>
-</ul>
-    <h2 id="apache-lucenetm-660-available">
-      6 June 2017 - Apache Lucene™ 6.6.0 available
-      <a class="headerlink" href="#apache-lucenetm-660-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.0</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.0">https://www.apache.org/dyn/closer.lua/lucene/java/6.6.0</a></p>
-<p>See the <a href="/core/6_6_0/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-<h3 id="highlights-of-this-lucene-release-include">Highlights of this Lucene release include:</h3>
-<ul>
-<li>
-<p>A concurrent SortedSet facets implementation</p>
-</li>
-<li>
-<p>spatial-extras HeatmapFacetCounter will now short-circuit it's work when Bits.MatchNoBits is passed</p>
-</li>
-<li>
-<p>OfflineSorter now passes the total number of items it will write to getWriter()</p>
-</li>
-<li>
-<p>Move dictionary for Ukrainian analyzer to external dependency</p>
-</li>
-<li>
-<p>SortedSetDocValuesReaderState now implements Accountable so one can see how much RAM it is using</p>
-</li>
-<li>
-<p>OfflineSorter can now run concurrently if you pass it an optional ExecutorService Sorted set facets now
-use sparse storage when collecting hits, when appropriate</p>
-</li>
-<li>
-<p>PostingsHighlighter has been deprecated in favour of the UnifiedHighlighter</p>
-</li>
-</ul>
-    <h2 id="apache-lucenetm-651-available">
-      27 April 2017 - Apache Lucene™ 6.5.1 available
-      <a class="headerlink" href="#apache-lucenetm-651-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.5.1</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.5.1">https://www.apache.org/dyn/closer.lua/lucene/java/6.5.1</a></p>
-<p>See the <a href="/core/6_5_1/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-<p>This release contains 3 bug fixes since the 6.5.0 release:</p>
-<ul>
-<li>
-<p>Fixed join queries to not reference IndexReaders, as it could cause leaks if they are cached.</p>
-</li>
-<li>
-<p>Made LRUQueryCache delegate the scoreSupplier method.</p>
-</li>
-<li>
-<p>Fixed index sorting to work with sparse numeric and binary docvalues field</p>
-</li>
-</ul>
-    <h2 id="apache-lucenetm-650-available">
-      27 March 2017 - Apache Lucene™ 6.5.0 available
-      <a class="headerlink" href="#apache-lucenetm-650-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.5.0</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.5.0">https://www.apache.org/dyn/closer.lua/lucene/java/6.5.0</a></p>
-<p>See the <a href="/core/6_5_0/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-<h3 id="highlights-of-this-lucene-release-include">Highlights of this Lucene release include:</h3>
-<ul>
-<li>
-<p>It is now possible filter out duplicates in the NRT suggester</p>
-</li>
-<li>
-<p>SimpleQueryString now supports default fuziness</p>
-</li>
-<li>
-<p>IndexWriter can return the list of visible field names</p>
-</li>
-<li>
-<p>DisjunctionScorer now supports returning the matching children clauses</p>
-</li>
-<li>
-<p>A new FunctionScoreQuery that modifies the internal query's score using the per-document values</p>
-</li>
-<li>
-<p>A new FunctionMatchQuery that returns any documents with a value that matches a predicate</p>
-</li>
-<li>
-<p>A new WordDelimiterGraphFilter that outputs a correct graph structure for multi-token expansion at query time</p>
-</li>
-<li>
-<p>A new PatternTokenizer that uses Lucene's RegExp implementation</p>
-</li>
-<li>
-<p>RangeFieldQuery now supports CROSSES relation</p>
-</li>
-<li>
-<p>A new IndexOrDocValuesQuery that uses either an index (points or terms) or doc values in order to run a (range, geo box and distance) query, depending which one is more efficient</p>
-</li>
-<li>
-<p>index-time boosts are deprecated</p>
-</li>
-<li>
-<p>Term filters are no longer cached</p>
-</li>
-<li>
-<p>Compound filters are cached earlier than regular queries</p>
-</li>
-<li>
-<p>BKDReader now calls grow on larger increments</p>
-</li>
-<li>
-<p>LatLonPointInPolygonQuery are faster</p>
-</li>
-<li>
-<p>LatLonPointDistanceQuery now skips distance computations more often</p>
-</li>
-<li>
-<p>To-parent block joins now implements two-phase iteration</p>
-</li>
-<li>
-<p>Point ranges that match most documents are faster</p>
-</li>
-<li>
-<p>PointValues#estimatePointCount is faster with Relation.CELL_INSIDE_QUERY</p>
-</li>
-<li>
-<p>Segments are now also sorted during flush, and merging on a sorted index is substantially faster by using some of the same bulk merge optimizations that non-sorted merging uses</p>
-</li>
-</ul>
-    <h2 id="core-apache-lucene-642-and-apache-solr-642-available">
-      7 March 2017 - Apache Lucene 6.4.2 and Apache Solr 6.4.2 Available
-      <a class="headerlink" href="#core-apache-lucene-642-and-apache-solr-642-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.2</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.4.2">https://www.apache.org/dyn/closer.lua/lucene/java/6.4.2</a></p>
-<p>See the <a href="/core/6_4_2/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-<h3 id="highlights-of-this-lucene-release-include">Highlights of this Lucene release include:</h3>
-<ul>
-<li>Fixed: CommonGramsQueryFilter was producing a disconnected token graph, messing up phrase queries during query parsing</li>
-</ul>
-    <h2 id="apache-lucenetm-554-available">
-      15 February 2017 - Apache Lucene™ 5.5.4 available
-      <a class="headerlink" href="#apache-lucenetm-554-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.4</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.5.4">https://www.apache.org/dyn/closer.lua/lucene/java/5.5.4</a></p>
-<p>See the <a href="/core/5_5_4/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-<h3 id="highlights-of-this-lucene-release-include">Highlights of this Lucene release include:</h3>
-<ul>
-<li>
-<p>Made stored fields reclaim native memory more aggressively</p>
-</li>
-<li>
-<p>Fixed a potential memory leak with LRUQueryCache and (Span)TermQuery</p>
-</li>
-<li>
-<p>MmapDirectory's unmapping code is now compatible with Java 9 (EA build 150 and later)</p>
-</li>
-</ul>
-    <h2 id="apache-lucenetm-641-available">
-      6 February 2017 - Apache Lucene™ 6.4.1 available
-      <a class="headerlink" href="#apache-lucenetm-641-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.1</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-TThe release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.4.1">https://www.apache.org/dyn/closer.lua/lucene/java/6.4.1</a></p>
-<p>See the <a href="/core/6_4_1/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-<h3 id="highlights-of-this-lucene-release-include">Highlights of this Lucene release include:</h3>
-<ul>
-<li>
-<p>Javadocs now build successfully with Java 8u121</p>
-</li>
-<li>
-<p>Fixed memory leak in the case that TermQuery or SpanTermQuery objects that wrap a TermContext were cached</p>
-</li>
-<li>
-<p>Fixed native memory leak when the codec is configured with the BEST_COMPRESSION option</p>
-</li>
-<li>
-<p>AnalyzingInfixSuggester now only opens an IndexWriter when changes need to be applied</p>
-</li>
-</ul>
-    <h2 id="apache-lucenetm-640-available">
-      23 January 2017 - Apache Lucene™ 6.4.0 available
-      <a class="headerlink" href="#apache-lucenetm-640-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.0</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.4.0">https://www.apache.org/dyn/closer.lua/lucene/java/6.4.0</a></p>
-<p>See the <a href="/core/6_4_0/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-<h3 id="highlights-of-this-lucene-release-include">Highlights of this Lucene release include:</h3>
-<ul>
-<li>
-<p>Lucene's best efforts to un-map memory mapped files with "MMapDirectory" now work with the latest Java9 early access builds</p>
-</li>
-<li>
-<p>A new similarity "BooleanSimilarity" that gives terms a score that is equal to their query boost</p>
-</li>
-<li>
-<p>The axiomatic family of similarities (6 in total) based on https://www.eecis.udel.edu/~hfang/pubs/sigir05-axiom.pdf</p>
-</li>
-<li>
-<p>A new token filter "SynonymGraphFilter" that outputs a correct graph structure for multi-token synonyms at query time</p>
-</li>
-<li>
-<p>Graph token streams, such as those produced by the "SynonymGraphFilter", are now handled accurately by query parsers</p>
-</li>
-<li>
-<p>A new collector "DocValuesStatsCollector" gives the ability to compute statistics on DocValues field</p>
-</li>
-<li>
-<p>It is now possible to filter "SortedDocValues" and "SortedSetDocValues" terms enum with a compiled automaton</p>
-</li>
-<li>
-<p>The "UnifiedHighlighter" can now highlight fields with queries that don't necessarily refer to that field</p>
-</li>
-<li>
-<p>DrillSideways can now run queries concurrently</p>
-</li>
-<li>
-<p>Index sorting now supports sorting on multi-valued fields using MIN, MAX, etc. selectors</p>
-</li>
-<li>
-<p>Points do not store the implicit split dimension in the 1-dimension case. This saves between 6% memory for the largest types such an InetAddressPoint to 33% for the smaller types such as HalfFloatPoint.</p>
-</li>
-<li>
-<p>The BKD in-memory index for dimensional points now uses a compressed format, using substantially less RAM in some cases</p>
-</li>
-<li>
-<p>The BKD writing now buffers each leaf block in heap before writing to disk, giving a small speedup in points-heavy use cases</p>
-</li>
-<li>
-<p>"TermAutomatonQuery" now rewrites to more efficient queries when possible</p>
-</li>
-</ul>
-<p>Please note, this release cannot be built from source with Java 8 update 121,
-use an earlier version instead! This is caused by a bug introduced into the
-Javadocs tool shipped with that update. The workaround was too late for this
-Lucene release. Of course, you can use the binary artifacts.</p>
-    <h2 id="apache-lucenetm-630-available">
-      8 November 2016 - Apache Lucene™ 6.3.0 available
-      <a class="headerlink" href="#apache-lucenetm-630-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.3.0</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.3.0">https://www.apache.org/dyn/closer.lua/lucene/java/6.3.0</a></p>
-<p>See the <a href="/core/6_3_0/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-<h3 id="highlights-of-this-lucene-release-include">Highlights of this Lucene release include:</h3>
-<ul>
-<li>
-<p>A brand new "UnifiedHighlighter" derivative of the PostingsHighlighter that can consume offsets from postings, term vectors, or analysis. It can highlight phrases as accurately as the standard Highlighter. Light term vectors can be used with offsets in postings for fast wildcard (MultiTermQuery) highlighting.</p>
-</li>
-<li>
-<p>SimpleQueryParser now parses '*' to MatchAllDocsQuery</p>
-</li>
-<li>
-<p>FuzzyQuery now matches all terms within the specified edit distance, even if they are short terms</p>
-</li>
-<li>
-<p>Points do not store the implicit split dimension in the 1-dimension case. This saves between 6% memory for the largest types such an InetAddressPoint to 33% for the smaller types such as HalfFloatPoint.</p>
-</li>
-<li>
-<p>Many other changes and bug fixes</p>
-</li>
-</ul>
-    <h2 id="apache-lucenetm-621-available">
-      20 September 2016 - Apache Lucene™ 6.2.1 available
-      <a class="headerlink" href="#apache-lucenetm-621-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.2.1</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<h3 id="highlights-of-this-lucene-release-include">Highlights of this Lucene release include:</h3>
-<ul>
-<li>
-<p>LUCENE-7417: The standard Highlighter could throw an !IllegalArgumentException when trying to highlight a query containing a degenerate case of a !MultiPhraseQuery with one term.</p>
-</li>
-<li>
-<p>LUCENE-7440: Document id skipping (!PostingsEnum.advance) could throw an !ArrayIndexOutOfBoundsException exception on large index segments (&gt;1.8B docs) with large skips.</p>
-</li>
-<li>
-<p>LUCENE-7318: Fix backwards compatibility issues around StandardAnalyzer and its components, introduced with Lucene 6.2.0. The moved classes were restored in their original packages: LowercaseFilter and StopFilter, as well as several utility classes.</p>
-</li>
-</ul>
-<p>The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.2.1">https://www.apache.org/dyn/closer.lua/lucene/java/6.2.1</a></p>
-<p>See the <a href="/core/6_2_1/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="apache-lucene-553-available">
-      9 September 2016 - Apache Lucene 5.5.3 available
-      <a class="headerlink" href="#apache-lucene-553-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.3</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.5.3">https://www.apache.org/dyn/closer.lua/lucene/java/5.5.3</a></p>
-<p>See the <a href="/core/5_5_3/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="apache-lucene-620-available">
-      25 August 2016 - Apache Lucene 6.2.0 available
-      <a class="headerlink" href="#apache-lucene-620-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.2.0</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  https://lucene.apache.org/core/mirrors-core-latest-redir.html</p>
-<p>Please read CHANGES.txt for a full list of new features and changes:
-  https://lucene.apache.org/core/6_2_0/changes/Changes.html</p>
-<h3 id="highlights-of-this-lucene-release-include">Highlights of this Lucene release include:</h3>
-<ul>
-<li>
-<p>The CREATE_NEW flag is passed when creating a file to ensure Lucene is really write-once</p>
-</li>
-<li>
-<p>Index numeric ranges (min and max value in a single field) and search by overlapping range</p>
-</li>
-<li>
-<p>IndexWriter methods return a sequence number indicating effective order of operations across threads</p>
-</li>
-<li>
-<p>UkrainianMorfologikAnalyzer is a new dictionary based analyzer for the Ukrainian language</p>
-</li>
-<li>
-<p>The Polygon class can now be created from a GeoJSON string</p>
-</li>
-<li>
-<p>Compound file creation now verifies checksum of its component files</p>
-</li>
-<li>
-<p>Index time sorting is now a core feature, and supports dimensional points</p>
-</li>
-<li>
-<p>StandardAnalyzer is moved to core and is the default analyzer</p>
-</li>
-<li>
-<p>MatchNoDocsQuery now includes the reason it was created</p>
-</li>
-<li>
-<p>QueryParser can now be told to not pre-split on whitespace</p>
-</li>
-<li>
-<p>MMapDirectory tries harder to prevent SIGSEGV if buggy code tries to execute
-    searches after the index was closed, but it's still best effort</p>
-</li>
-<li>
-<p>MMapDirectory no longer allocates weak references to ease garbage collection</p>
-</li>
-<li>
-<p>Conjunction (MUST, FILTER) queries are faster</p>
-</li>
-<li>
-<p>Dimensional points have much faster (~40%) flush time and use less space in the index</p>
-</li>
-</ul>
-    <h2 id="apache-lucene-552-available">
-      25 June 2016 - Apache Lucene 5.5.2 available
-      <a class="headerlink" href="#apache-lucene-552-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.2</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains 11 bug fixes since the 5.5.1 release.</p>
-<p>The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.5.2">https://www.apache.org/dyn/closer.lua/lucene/java/5.5.2</a></p>
-<p>See the <a href="/core/5_5_2/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="apache-lucene-610-available">
-      17 June 2016 - Apache Lucene 6.1.0 available
-      <a class="headerlink" href="#apache-lucene-610-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.1.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  https://lucene.apache.org/core/mirrors-core-latest-redir.html</p>
-<p>Please read CHANGES.txt for a full list of new features and changes:
-  https://lucene.apache.org/core/6_1_0/changes/Changes.html</p>
-<p>Lucene 6.1.0 Release Highlights:</p>
-<p>New features</p>
-<ul>
-<li>
-<p>Numerous improvements to LatLonPoint, for indexing a latitude/longitude point and searching by polygon, distance or box, or finding nearest neighbors</p>
-</li>
-<li>
-<p>Geo3D now has simple APIs for creating common shape queries, matching LatLonPoint</p>
-</li>
-</ul>
-<p>Optimizations</p>
-<ul>
-<li>
-<p>Faster indexing and searching of points.</p>
-</li>
-<li>
-<p>Faster geo-spatial indexing and searching for LatLonPoint, Geo3D and GeoPoint (see http://home.apache.org/~mikemccand/geobench.html )</p>
-</li>
-<li>
-<p>HardlinkCopyDirectoryWrapper optimizes file copies using hard links</p>
-</li>
-<li>
-<p>In case of contention, the query cache now prefers returning an uncached Scorer rather than waiting on a lock.</p>
-</li>
-</ul>
-<p>Bug fixes</p>
-<ul>
-<li>
-<p>BooleanQuery could sometimes assign too low scores to ranges of documents that matched a single clause.</p>
-</li>
-<li>
-<p>Doc values updates could sometimes be applied in the wrong order.</p>
-</li>
-</ul>
-    <h2 id="apache-lucene-601-available">
-      28 May 2016 - Apache Lucene 6.0.1 available
-      <a class="headerlink" href="#apache-lucene-601-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.0.1</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains 10 bug fixes since the 6.0.0 release, and one new feature:</p>
-<ul>
-<li>Spatial-extras DateRangePrefixTree's Calendar is now configurable, to e.g. clear the Gregorian Change Date. Also, toString(cal) is now identical to DateTimeFormatter.ISO_INSTANT.</li>
-</ul>
-<p>The release is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.0.1">https://www.apache.org/dyn/closer.lua/lucene/java/6.0.1</a></p>
-<p>See the <a href="/core/6_0_1/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="apache-lucene-551-available">
-      5 May 2016 - Apache Lucene 5.5.1 Available
-      <a class="headerlink" href="#apache-lucene-551-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.1</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains one bug fix since the 5.5.0 release. The release
-is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/core/5.5.1">https://www.apache.org/dyn/closer.lua/lucene/core/5.5.1</a></p>
-<p>See the <a href="/core/5_5_1/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="core-apache-lucene-600-available">
-      8 April 2016 - Apache Lucene 6.0.0 Available
-      <a class="headerlink" href="#core-apache-lucene-600-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 6.0.0.</p>
-<p>The release can be downloaded from <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Release Highlights:</p>
-<ul>
-<li>
-<p>Java 8 is the minimum Java version required.</p>
-</li>
-<li>
-<p>Dimensional points, replacing legacy numeric fields, provides fast and space-efficient support for both single- and multi-dimension range and shape filtering.  This includes numeric (int, float, long, double), InetAddress, BigInteger and binary range filtering, as well as geo-spatial shape search over indexed 2D LatLonPoints.  See <a href="https://www.elastic.co/blog/lucene-points-6.0">this blog post</a> for details.  Dependent classes and modules (e.g., MemoryIndex, Spatial Strategie [...]
-</li>
-<li>
-<p>Lucene classification module now works on Lucene Documents using a KNearestNeighborClassifier or SimpleNaiveBayesClassifier.</p>
-</li>
-<li>
-<p>The spatial module no longer depends on third-party libraries. Previous spatial classes have been moved to a new spatial-extras module.</p>
-</li>
-<li>
-<p>Spatial4j has been updated to a new 0.6 version hosted by locationtech.</p>
-</li>
-<li>
-<p>TermsQuery performance boost by a more aggressive default query caching policy.</p>
-</li>
-<li>
-<p>IndexSearcher's default Similarity is now changed to BM25Similarity.</p>
-</li>
-<li>
-<p>Easier method of defining custom CharTokenizer instances.</p>
-</li>
-</ul>
-    <h2 id="apache-lucene-550-available">
-      22 February 2016 - Apache Lucene 5.5.0 Available
-      <a class="headerlink" href="#apache-lucene-550-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.0</p>
-<p>The release can be downloaded from <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Release highlights:</p>
-<ul>
-<li>
-<p>JoinUtil.createJoinQuery can now join on numeric doc values fields</p>
-</li>
-<li>
-<p>BlendedInfixSuggester now has an exponential reciprocal scoring model, to more strongly favor suggestions with matches closer to the beginning</p>
-</li>
-<li>
-<p>CustomAnalyzer has improved (compile time) type safety</p>
-</li>
-<li>
-<p>DFISimilarity implements the divergence from independence scoring model</p>
-</li>
-<li>
-<p>Fully wrap any other merge policy using MergePolicyWrapper</p>
-</li>
-<li>
-<p>Sandbox geo point queries have graduated into the spatial module, and now use a more efficient binary term encoding for smaller index size, faster indexing, and decreased search-time heap usage</p>
-</li>
-<li>
-<p>BooleanQuery performs some new query optimizations</p>
-</li>
-<li>
-<p>TermsQuery constructors are more GC efficient</p>
-</li>
-</ul>
-    <h2 id="apache-lucene-532-available">
-      23 January 2016 - Apache Lucene 5.3.2 Available
-      <a class="headerlink" href="#apache-lucene-532-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.3.2</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains one bug fix since the 5.3.1 release. The release
-is available for immediate download at:</p>
-<p><a href="https://www.apache.org/dyn/closer.lua/lucene/core/5.3.2">https://www.apache.org/dyn/closer.lua/lucene/core/5.3.2</a></p>
-<p>See the <a href="/core/5_3_2/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="apache-lucene-541-available">
-      23 January 2016 - Apache Lucene 5.4.1 Available
-      <a class="headerlink" href="#apache-lucene-541-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.4.1</p>
-<p>The release can be downloaded from <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>This release contains an important fix for a corruption bug that was
-introduced in version 5.4.0. If you are on 5.4.0 and using BINARY,
-SORTED_NUMERIC or SORTED_SET doc values, upgrading to 5.4.1 is strongly
-recommended.</p>
-<p>See the <a href="/core/5_4_1/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="apache-lucene-540-available">
-      14 December 2015 - Apache Lucene 5.4.0 Available
-      <a class="headerlink" href="#apache-lucene-540-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.4.0</p>
-<p>The release can be downloaded from <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<h3 id="highlights-of-this-lucene-release-include">Highlights of this Lucene release include:</h3>
-<h4 id="api-changes">API Changes</h4>
-<ul>
-<li>Query.getBoost and Query.setBoost are deprecated in favour of the new BoostQuery</li>
-<li>The Filter class is deprecated in favour of FILTER clauses in a BooleanQuery</li>
-<li>DefaultSimilarity has been renamed to ClassicSimilarity to prepare for the move to BM25 in Lucene 6</li>
-</ul>
-<h4 id="new-features">New features</h4>
-<ul>
-<li>New Serbian token filter</li>
-<li>New DecimalDigitFilter, to fold unicode digits to latin digits</li>
-<li>New UnicodeWhitespaceTokenizer, that uses Unicode's whitespace definition and splits on NBSP</li>
-<li>New GeoPointDistanceRangeQuery to search for geo-points within a ring</li>
-<li>Query caching is now enabled by default in IndexSearcher, use IndexSearcher.setQueryCache(null) to disable</li>
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>MatchAllDocsQuery got faster</li>
-<li>Doc values now use less memory for multi-valued fields and less disk in case of sparse fields</li>
-<li>Two-phase iterators got a match cost API so that the costly bits can be checked last</li>
-</ul>
-<h4 id="bug-fixes">Bug fixes</h4>
-<ul>
-<li>PatternTokenizer no longer hangs onto heap sized to the maximum input string it's ever seen.</li>
-</ul>
-    <h2 id="core-apache-lucene-531-and-apache-solr-531-available">
-      24 September 2015 - Apache Lucene 5.3.1 and Apache Solr 5.3.1 Available
-      <a class="headerlink" href="#core-apache-lucene-531-and-apache-solr-531-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.3.1</p>
-<p>The release can be downloaded from <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<h3 id="highlights-of-this-lucene-release-include">Highlights of this Lucene release include:</h3>
-<h4 id="bug-fixes">Bug Fixes</h4>
-<ul>
-<li>Remove classloader hack in MorfologikFilter</li>
-<li>UsageTrackingQueryCachingPolicy no longer caches trivial queries like MatchAllDocsQuery</li>
-<li>Fixed BoostingQuery to rewrite wrapped queries</li>
-</ul>
-    <h2 id="apache-lucenetm-530-available">
-      24 August 2015 - Apache Lucene™ 5.3.0 available
-      <a class="headerlink" href="#apache-lucenetm-530-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.3.0</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:
- <a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.3.0">https://www.apache.org/dyn/closer.lua/lucene/java/5.3.0</a></p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  https://lucene.apache.org/core/mirrors-core-latest-redir.html</p>
-<h3 id="lucene-530-release-highlights">Lucene 5.3.0 Release Highlights:</h3>
-<h4 id="api-changes">API Changes</h4>
-<ul>
-<li>PhraseQuery and BooleanQuery are now immutable</li>
-</ul>
-<h4 id="new-features">New features</h4>
-<ul>
-<li>Added a new org.apache.lucene.search.join.CheckJoinIndex class that can be used to validate that an index has an appropriate structure to run join queries</li>
-<li>Added a new BlendedTermQuery to blend statistics across several terms</li>
-<li>New common suggest API that mirrors Lucene's Query/IndexSearcher APIs for Document based suggester.</li>
-<li>IndexWriter can now be initialized from an already open near-real-time or non-NRT reader</li>
-<li>Add experimental range tree doc values format and queries, based on a 1D version of the spatial BKD tree, for a faster and smaller alternative to postings-based numeric and binary term filtering.  Range trees can also handle values larger than 64 bits.</li>
-</ul>
-<h4 id="geo-related-features-and-improvements">Geo-related features and improvements</h4>
-<ul>
-<li>Added GeoPointField, GeoPointInBBoxQuery, GeoPointInPolygonQuery for simple "indexed lat/lon point in bbox/shape" searching</li>
-<li>Added experimental BKD geospatial tree doc values format and queries, for fast "bbox/polygon contains lat/lon points"</li>
-<li>Use doc values to post-filter GeoPointField hits that fall in boundary cells, resulting in smaller index, faster searches and less heap used for each query</li>
-</ul>
-<h4 id="optimizations">Optimizations</h4>
-<ul>
-<li>Reduce RAM usage of FieldInfos, and speed up lookup by number, by using an array instead of TreeMap except in very sparse cases</li>
-<li>Faster intersection of the terms dictionary with very finite automata, which can be generated eg. by simple regexp queries</li>
-<li>Various bugfixes and optimizations since the 5.2.0 release.</li>
-</ul>
-<p>See the <a href="/core/5_3_0/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="apache-lucenetm-521-available">
-      15 June 2015 - Apache Lucene™ 5.2.1 available
-      <a class="headerlink" href="#apache-lucenetm-521-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.2.1</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains various bug fixes and optimizations since the 5.2.0 release.</p>
-<p>The release is available for immediate download at:
- <a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.2.1">https://www.apache.org/dyn/closer.lua/lucene/java/5.2.1</a></p>
-<p>Lucene 5.2.1 includes 3 bug fixes:</p>
-<ul>
-<li>Fix class loading deadlock relating to Codec initialization, default codec and SPI discovery.</li>
-<li>NRT readers now reflect a new commit even if there is no change to the commit user data</li>
-<li>Queries now get a dummy Similarity when scores are not needed in order to not load unnecessary information like norms</li>
-</ul>
-<p>See the <a href="/core/5_2_1/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="lucene-core-520-available">
-      7 June 2015 - Lucene Core 5.2.0 Available
-      <a class="headerlink" href="#lucene-core-520-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.2.0</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:
- <a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.2.0">https://www.apache.org/dyn/closer.lua/lucene/java/5.2.0</a></p>
-<p>Lucene 5.2.0 release highlights:</p>
-<ul>
-<li>
-<p>Span queries now share document conjunction/intersection code with boolean queries, and use two-phased iterators for faster intersection by avoiding loading positions in certain cases.</p>
-</li>
-<li>
-<p>Added two-phase support to SpanNotQuery, and SpanPositionCheckQuery and its subclasses: SpanPositionRangeQuery, SpanPayloadCheckQuery, SpanNearPayloadCheckQuery, SpanFirstQuery.</p>
-</li>
-<li>
-<p>Added a new query time join to the join module that uses global ordinals, which is faster for subsequent joins between reopens.</p>
-</li>
-<li>
-<p>New CompositeSpatialStrategy combines speed of RPT with accuracy of SDV. Includes optimized Intersect predicate to avoid many geometry checks. Uses TwoPhaseIterator.</p>
-</li>
-<li>
-<p>New LimitTokenOffsetFilter that limits tokens to those before a configured maximum start offset.</p>
-</li>
-<li>
-<p>New spatial PackedQuadPrefixTree, a generally more efficient choice than QuadPrefixTree, especially for high precision shapes. When used, you should typically disable RPT's pruneLeafyBranches option.</p>
-</li>
-<li>
-<p>Expressions now support bindings keys that look like zero arg functions</p>
-</li>
-<li>
-<p>Add SpanWithinQuery and SpanContainingQuery that return spans inside of / containing another spans.</p>
-</li>
-<li>
-<p>New Spatial "Geo3d" API with partial Spatial4j integration. It is a set of shapes implemented using 3D planar geometry for calculating spatial relations on the surface of a sphere. Shapes include Point, BBox, Circle, Path (buffered line string), and Polygon.</p>
-</li>
-<li>
-<p>Various bugfixes and optimizations since the 5.1.0 release.</p>
-</li>
-</ul>
-<p>See the <a href="/core/5_2_0/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="lucene-core-510-available">
-      14 April 2015 - Lucene Core 5.1.0 Available
-      <a class="headerlink" href="#lucene-core-510-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.1.0</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:
- <a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.1.0">https://www.apache.org/dyn/closer.lua/lucene/java/5.1.0</a></p>
-<p>Lucene 5.1.0 includes 9 new features, 10 bug fixes, and 24 optimizations / other
-changes from 18 unique contributors.</p>
-<p>See the <a href="/core/5_1_0/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="lucene-core-4104-available">
-      5 March 2015 - Lucene Core 4.10.4 Available
-      <a class="headerlink" href="#lucene-core-4104-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 4.10.4</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:
- <a href="https://www.apache.org/dyn/closer.lua/lucene/java/4.10.4">https://www.apache.org/dyn/closer.lua/lucene/java/4.10.4</a></p>
-<p>Lucene 4.10.4 includes 13 bug fixes.</p>
-<p>See the <a href="/core/4_10_4/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="lucenetm-500-core-available">
-      20 February 2015 - Lucene™ 5.0.0 core available
-      <a class="headerlink" href="#lucenetm-500-core-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 5.0.</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-<a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Lucene 5.0 Release Highlights:</p>
-<p>Stronger index safety</p>
-<ul>
-<li>
-<p>All file access now uses Java’s NIO.2 APIs which give Lucene stronger index safety in terms of better error handling and safer commits.</p>
-</li>
-<li>
-<p>Every Lucene segment now stores a unique id per-segment and per-commit to aid in accurate replication of index files.</p>
-</li>
-<li>
-<p>During merging, IndexWriter now always checks the incoming segments for corruption before merging. This can mean, on upgrading to 5.0.0, that merging may uncover long-standing latent corruption in an older 4.x index.</p>
-</li>
-</ul>
-<p>Reduced heap usage</p>
-<ul>
-<li>
-<p>Lucene now supports random-writable and advance-able sparse bitsets (RoaringDocIdSet and SparseFixedBitSet), so the heap required is in proportion to how many bits are set, not how many total documents exist in the index.</p>
-</li>
-<li>
-<p>Heap usage during IndexWriter merging is also much lower with the new Lucene50Codec, since doc values and norms for the segments being merged are no longer fully loaded into heap for all fields; now they are loaded for the one field currently being merged, and then dropped.</p>
-</li>
-<li>
-<p>The default norms format now uses sparse encoding when appropriate, so indices that enable norms for many sparse fields will see a large reduction in required heap at search time.</p>
-</li>
-<li>
-<p>5.0 has a new API to print a tree structure showing a recursive breakdown of which parts are using how much heap.</p>
-</li>
-</ul>
-<p>Other features</p>
-<ul>
-<li>
-<p>FieldCache is gone (moved to a dedicated UninvertingReader in the misc module). This means when you intend to sort on a field, you should index that field using doc values, which is much faster and less heap consuming than FieldCache.</p>
-</li>
-<li>
-<p>Tokenizers and Analyzers no longer require Reader on init.</p>
-</li>
-<li>
-<p>NormsFormat now gets its own dedicated NormsConsumer/Producer</p>
-</li>
-<li>
-<p>SortedSetSortField, used to sort on a multi-valued field, is promoted from sandbox to Lucene's core.</p>
-</li>
-<li>
-<p>PostingsFormat now uses a "pull" API when writing postings, just like doc values. This is powerful because you can do things in your postings format that require making more than one pass through the postings such as iterating over all postings for each term to decide which compression format it should use.</p>
-</li>
-<li>
-<p>New DateRangeField type enables Indexing and searching of date ranges, particularly multi-valued ones.</p>
-</li>
-<li>
-<p>A new ExitableDirectoryReader extends FilterDirectoryReader and enables exiting requests that take too long to enumerate over terms.</p>
-</li>
-<li>
-<p>Suggesters from multi-valued field can now be built as DocumentDictionary now enumerates each value separately in a multi-valued field.</p>
-</li>
-<li>
-<p>ConcurrentMergeScheduler detects whether the index is on SSD or not and does a better job defaulting its settings. This only works on Linux for now; other OS's will continue to use the previous defaults (tuned for spinning disks).</p>
-</li>
-<li>
-<p>Auto-IO-throttling has been added to ConcurrentMergeScheduler, to rate limit IO writes for each merge depending on incoming merge rate.</p>
-</li>
-<li>
-<p>CustomAnalyzer has been added that allows to configure analyzers like you do in Solr's index schema. This class has a builder API to configure Tokenizers, TokenFilters, and CharFilters based on their SPI names and parameters as documented by the corresponding factories.</p>
-</li>
-<li>
-<p>Memory index now supports payloads.</p>
-</li>
-<li>
-<p>Added a filter cache with a usage tracking policy that caches filters based on frequency of use.</p>
-</li>
-<li>
-<p>The default codec has an option to control BEST_SPEED or BEST_COMPRESSION for stored fields.</p>
-</li>
-<li>
-<p>Stored fields are merged more efficiently, especially when upgrading from previous versions or using SortingMergePolicy</p>
-</li>
-</ul>
-<p>NOTE: Lucene 5 no longer supports the Lucene 3.x index format. Opening indexes will result in IndexFormatTooOldException. It is recommended to either reindex all your data, or upgrade the old indexes with the IndexUpgrader tool of latest Lucene 4 version (4.10.x). Those indexes can then be read (see next section) with Lucene 5.</p>
-<p>To read more about the changes, also see: <a href="http://blog.mikemccandless.com/2014/11/apache-lucene-500-is-coming.html">http://blog.mikemccandless.com/2014/11/apache-lucene-500-is-coming.html</a></p>
-<p>Please read <a href="/core/5_0_0/changes/Changes.html">CHANGES.txt</a> and MIGRATE.txt for a full list of new features and notes on upgrading.</p>
-    <h2 id="lucene-core-4103-available">
-      29 December 2014 - Lucene Core 4.10.3 Available
-      <a class="headerlink" href="#lucene-core-4103-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 4.10.3</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:
- <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Lucene 4.10.3 includes 12 bug fixes.</p>
-<p>See the <a href="/core/4_10_3/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details, and Happy Holidays!</p>
-    <h2 id="lucene-core-4102-available">
-      31 October 2014 - Lucene Core 4.10.2 Available
-      <a class="headerlink" href="#lucene-core-4102-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 4.10.2</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:
- <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Lucene 4.10.2 includes 2 bug fixes.</p>
-<p>See the <a href="/core/4_10_2/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details, and Happy Halloween!</p>
-    <h2 id="lucene-core-4101-available">
-      29 September 2014 - Lucene Core 4.10.1 Available
-      <a class="headerlink" href="#lucene-core-4101-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 4.10.1</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:
- <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Lucene 4.10.1 includes 7 bug fixes.</p>
-<p>See the <a href="/core/4_10_1/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="lucene-core-491-available">
-      22 September 2014 - Lucene Core 4.9.1 Available
-      <a class="headerlink" href="#lucene-core-491-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 4.9.1</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:
- <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Lucene 4.9.1 includes 7 bug fixes.</p>
-<p>See the <a href="/core/4_9_1/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="lucene-core-4100-available">
-      3 September 2014 - Lucene Core 4.10.0 Available
-      <a class="headerlink" href="#lucene-core-4100-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 4.10.0</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>See the <a href="/core/4_10_0/changes/Changes.html">CHANGES.txt</a> file included with the release for a full list of
-details.</p>
-<p>Lucene 4.10.0 Release Highlights:</p>
-<ul>
-<li>
-<p>New TermAutomatonQuery using an automaton for proximity queries.
-  <a href="http://blog.mikemccandless.com/2014/08/a-new-proximity-query-for-lucene-using.html">http://blog.mikemccandless.com/2014/08/a-new-proximity-query-for-lucene-using.html</a></p>
-</li>
-<li>
-<p>New OrdsBlockTree terms dictionary supporting ord lookup.</p>
-</li>
-<li>
-<p>Simplified matchVersion handling for Analyzers with new setVersion method, as well as Analyzer constructors not requiring Version.</p>
-</li>
-<li>
-<p>Fixed possible corruption when opening a 3.x index with NRT reader.</p>
-</li>
-<li>
-<p>Fixed edge case in StandardTokenizer that caused extremely slow parsing times with long text which partially matched grammar rules.</p>
-</li>
-</ul>
-    <h2 id="lucene-core-490-available">
-      25 June 2014 - Lucene Core 4.9.0 Available
-      <a class="headerlink" href="#lucene-core-490-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 4.9.0</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>See the <a href="/core/4_9_0/changes/Changes.html">CHANGES.txt</a> file included with the release for a full list of
-details.</p>
-<p>Lucene 4.9.0 Release Highlights:</p>
-<ul>
-<li>
-<p>New Terms.getMin/Max methods to retrieve the lowest and highest
-  terms per field.</p>
-</li>
-<li>
-<p>New IDVersionPostingsFormat, optimized for ID lookups that associate
-  a monotonically increasing version per ID.</p>
-</li>
-<li>
-<p>Atomic update of a set of doc values fields.</p>
-</li>
-<li>
-<p>Numerous optimizations for doc values search-time performance.</p>
-</li>
-<li>
-<p>New (default) Lucene49NormsFormat to better compress certain cases
-  such as very short fields.</p>
-</li>
-<li>
-<p>New SORTED_NUMERIC docvalues type for efficient processing of
-  multi-valued numeric fields.</p>
-</li>
-<li>
-<p>Indexer passes previous token stream for easier reuse.</p>
-</li>
-<li>
-<p>MoreLikeThis accepts multiple values per field.</p>
-</li>
-<li>
-<p>All classes that estimate their RAM usage now implement a new
-  Accountable interface.</p>
-</li>
-<li>
-<p>Lucene files are now written by (File)OutputStream on all platforms,
-  completely disallowing seeking with simplified IO APIs.</p>
-</li>
-<li>
-<p>Improve the confusing error message when MMapDirectory cannot create
-  a new map.</p>
-</li>
-</ul>
-    <h2 id="lucene-core-481-available">
-      20 May 2014 - Lucene Core 4.8.1 Available
-      <a class="headerlink" href="#lucene-core-481-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 4.8.1</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:
- <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Lucene 4.8.1 includes 15 bug fixes.</p>
-<p>See the <a href="/core/4_8_1/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="apache-lucene-480-available">
-      28 April 2014 - Apache Lucene 4.8.0 Available
-      <a class="headerlink" href="#apache-lucene-480-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 4.8.0</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>See the <a href="/core/4_8_0/changes/Changes.html">CHANGES.txt</a> file included
-with the release for a full list of details.</p>
-<h3 id="lucene-480-release-highlights">Lucene 4.8.0 Release Highlights:</h3>
-<ul>
-<li>
-<p>Apache Lucene now requires Java 7 or greater (recommended is
-  Oracle Java 7 or OpenJDK 7, minimum update 55; earlier versions
-  have known JVM bugs affecting Lucene).</p>
-</li>
-<li>
-<p>Apache Lucene is fully compatible with Java 8.</p>
-</li>
-<li>
-<p>All index files now store end-to-end checksums, which are
-  now validated during merging and reading. This ensures that
-  corruptions caused by any bit-flipping hardware problems or bugs
-  in the JVM can be detected earlier.  For full detection be sure
-  to enable all checksums during merging (it's disabled by default).</p>
-</li>
-<li>
-<p>Lucene has a new Rescorer/QueryRescorer API to perform second-pass
-  rescoring or reranking of search results using more expensive scoring
-  functions after first-pass hit collection.</p>
-</li>
-<li>
-<p>AnalyzingInfixSuggester now supports near-real-time autosuggest.</p>
-</li>
-<li>
-<p>Simplified impact-sorted postings (using SortingMergePolicy and
-  EarlyTerminatingCollector) to use Lucene's Sort class
-  to express the sort order.</p>
-</li>
-<li>
-<p>Bulk scoring and normal iterator-based scoring were separated,
-  so some queries can do bulk scoring more effectively.</p>
-</li>
-<li>
-<p>Switched to MurmurHash3 to hash terms during indexing.</p>
-</li>
-<li>
-<p>IndexWriter now supports updating of binary doc value fields.</p>
-</li>
-<li>
-<p>HunspellStemFilter now uses 10 to 100x less RAM. It also loads
-  all known OpenOffice dictionaries without error.</p>
-</li>
-<li>
-<p>Lucene now also fsyncs the directory metadata on commits, if the
-  operating system and file system allow it (Linux, MacOSX are
-  known to work).</p>
-</li>
-<li>
-<p>Lucene now uses Java 7 file system functions under the hood,
-  so index files can be deleted on Windows, even when readers are
-  still open.</p>
-</li>
-<li>
-<p>A serious bug in NativeFSLockFactory was fixed, which could
-  allow multiple IndexWriters to acquire the same lock.  The
-  lock file is no longer deleted from the index directory
-  even when the lock is not held.</p>
-</li>
-<li>
-<p>Various bugfixes and optimizations since the 4.7.2 release.</p>
-</li>
-</ul>
-    <h2 id="lucene-core-472-available">
-      15 April 2014 - Lucene Core 4.7.2 Available
-      <a class="headerlink" href="#lucene-core-472-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 4.7.2</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:
- <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Lucene 4.7.2 includes 2 bug fixes, including a possible index corruption
-with near-realtime search.</p>
-<p>See the <a href="/core/4_7_2/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="lucene-core-471-available">
-      2 April 2014 - Lucene Core 4.7.1 Available
-      <a class="headerlink" href="#lucene-core-471-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 4.7.1</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>The release is available for immediate download at:
- <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>Lucene 4.7.1 includes 14 bug fixes; one build improvement; and one change in
-runtime behavior: AutomatonQuery.equals is no longer implemented as "accepts
-same language".</p>
-<p>See the <a href="/core/4_7_1/changes/Changes.html">CHANGES.txt</a> file included with the
-release for a full list of changes and further details.</p>
-    <h2 id="apache-lucene-48-will-require-java-7">
-      12 March 2014 - Apache Lucene 4.8 will require Java 7
-      <a class="headerlink" href="#apache-lucene-48-will-require-java-7" title="Permanent link">¶</a>
-    </h2>
-    <p>The Apache Lucene committers decided with a large majority on the vote to require <strong>Java 7</strong> for the next minor release of Apache Lucene (version 4.8)!</p>
-<p>The next release will also contain some improvements for Java 7:</p>
-<ul>
-<li>
-<p>Better file handling (especially on Windows) in the directory implementations. Files can now be deleted on windows, although the index is still open - like it was always possible on Unix environments (delete on last close semantics).</p>
-</li>
-<li>
-<p>Speed improvements in sorting comparators: Sorting now uses Java 7's own comparators for integer and long sorts, which are highly optimized by the Hotspot VM.</p>
-</li>
-</ul>
-<p>If you want to stay up-to-date with Lucene and Solr, you should upgrade your infrastructure to Java 7.
-Please be aware that you must use at least use Java 7u1.
-The recommended version at the moment is Java 7u25. Later versions like 7u40, 7u45,... have a bug causing index corrumption.
-Ideally use the Java 7u60 prerelease, which has fixed this bug. Once 7u60 is out, this will be the recommended version.
-In addition, there is no more Oracle/BEA JRockit available for Java 7, use the official Oracle Java 7.
-JRockit was never working correctly with Lucene/Solr (causing index corrumption), so this should not be an issue.
-Please also review our list of JVM bugs: <a href="http://wiki.apache.org/lucene-java/JavaBugs">http://wiki.apache.org/lucene-java/JavaBugs</a></p>
-<p><em>EDIT (as of 15 April 2014):</em> The recently released Java 7u55 fixes the above bug causing index corrumption.
-This version is now the recommended version for running Apache Lucene.</p>
-    <h2 id="lucene-core-47-available">
-      26 February 2014 - Lucene Core 4.7 Available
-      <a class="headerlink" href="#lucene-core-47-available" title="Permanent link">¶</a>
-    </h2>
-    <p>The Lucene PMC is pleased to announce the release of Apache Lucene 4.7</p>
-<p>Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.</p>
-<p>This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  <a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html">https://lucene.apache.org/core/mirrors-core-latest-redir.html</a></p>
-<p>See the <a href="/core/4_7_0/changes/Changes.html">CHANGES.txt</a> file included
-with the release for a full list of details.</p>
-<h3 id="lucene-47-release-highlights">Lucene 4.7 Release Highlights:</h3>
-<ul>
-<li>
-<p>When sorting by String (SortField.STRING), you can now specify whether missing values should be sorted first (the default), or last.</p>
-</li>
-<li>
-<p>Add two memory resident dictionaries (FST terms dictionary and FSTOrd
-  terms dictionary) to improve primary key lookups. The
-  PostingsBaseFormat API is also changed so that term dictionaries get
-  the ability to block encode term metadata, and all dictionary
-  implementations can now plug in any PostingsBaseFormat.</p>
-</li>
-<li>
-<p>NRT support for file systems that do not have delete on last close or cannot delete while referenced semantics.</p>
-</li>
-<li>
-<p>Add LongBitSet for managing more than 2.1B bits (otherwise use FixedBitSet).</p>
-</li>
-<li>
-<p>Speed up Lucene range faceting from O(N) per hit to O(log(N)) per hit using segment trees.</p>
-</li>
-<li>
-<p>Add SearcherTaxonomyManager over search and taxonomy index directories
-  (i.e. not only NRT).</p>
-</li>
-<li>
-<p>Drilling down or sideways on a Lucene facet range (using
-  Range.getFilter()) is now faster for costly filters (uses random
-  access, not iteration); range facet counts now accept a fast-match
-  filter to avoid computing the value for documents that are out of
-  bounds, e.g. using a bounding box filter with distance range faceting.</p>
-</li>
-<li>
-<p>Add Analyzer for Kurdish.</p>
-</li>
-<li>
-<p>Add Payload support to FileDictionary (Suggest) and make it more configurable.</p>
-</li>
-<li>
-<p>Add a new BlendedInfixSuggester, which is like AnalyzingInfixSuggester but boosts suggestions that matched tokens with lower positions.</p>
-</li>
-<li>
-<p>Add SimpleQueryParser: parser for human-entered queries.</p>
-</li>
-<li>
-<p>Add multitermquery (wildcards,prefix,etc) to PostingsHighlighter.</p>
-</li>
-<li>
-<p>Upgrade to Spatial4j 0.4.1: Parses WKT (including ENVELOPE) with extension BUFFER; buffering a point results in a Circle. JTS isn't
-  needed for WKT any more but remains required for Polygons. New Shapes: ShapeCollection and BufferedLineString.</p>
-</li>
-<li>
-<p>Add spatial SerializedDVStrategy that serializes a binary
-  representation of a shape into BinaryDocValues. It supports exact
-  geometry relationship calculations.</p>
-</li>
-<li>
-<p>Various bugfixes and optimizations since the 4.6.1 release.</p>
-</li>
-</ul>
-  </div>
-        </div>
-        <div id="sidebar">
-<div class="button-wrapper">
-  <div class="button-green">
-    <a href="/core/downloads.html">Download</a>
-    <div class="flap top">Click to</div>
-    <div class="flap bottom">Apache Lucene 10.4.0</div>
-  </div>
-  <div class="download-desc">Apache Lucene 10.4.0</div>
-</div>
-
-<h1 id="resources">Resources</h1>
-<ul>
-  <li><a href="/core/discussion.html">Mailing Lists</a></li>
-  <li><a href="/core/developer.html">Developer</a></li>
-  <li><a href="/core/features.html">Features</a></li>
-  <li><a href="/core/downloads.html">Releases</a></li>
-  <li><a href="/core/systemreqs.html">System Requirements</a></li>
-</ul>
-
-<h1 id="release-docs">Release Docs</h1>
-<ul>
-  <li><a href="/core/10_4_0/index.html">10.4.0</a></li>
-</ul>
-
-<h1 id="about">About</h1>
-<ul>
-  <li><a href="https://www.apache.org/licenses/">License</a></li>
-  <li><a href="/whoweare.html">Who We are</a></li>
-</ul>
-
-<h1 id="events">Events</h1>
-<ul>
-  <a class="acevent" data-format="square" data-mode="light" data-width="160" data-style="border: 1px solid lightgrey"></a>
-</ul>
-
-<h1 id="asf-links">ASF links</h1>
-<ul>
-  <li><a href="https://www.apache.org">Apache Software Foundation</a></li>
-  <li><a href="https://www.apache.org/foundation/thanks.html">Thanks</a></li>
-  <li><a href="https://www.apache.org/foundation/sponsorship.html">Become a Sponsor</a></li>
-  <li><a href="https://www.apache.org/security/">Security</a></li>
-</ul>
-
-<h1 id="related-projects">Related Projects</h1>
-<ul>
-  <li><a href="https://solr.apache.org">Apache Solr</a></li>
-  <li><a href="http://hadoop.apache.org">Apache Hadoop</a></li>
-  <li><a href="http://manifoldcf.apache.org/">Apache ManifoldCF</a></li>
-  <li><a href="http://lucenenet.apache.org/">Apache Lucene.Net</a></li>
-  <li><a href="http://mahout.apache.org">Apache Mahout</a></li>
-  <li><a href="http://nutch.apache.org">Apache Nutch</a></li>
-  <li><a href="http://opennlp.apache.org/">Apache OpenNLP</a></li>
-  <li><a href="http://tika.apache.org">Apache Tika</a></li>
-  <li><a href="http://zookeeper.apache.org">Apache Zookeeper</a></li>
-</ul>
-
-<div class="status">
-  <!-- No SVN anymore; TODO: how to do Git? INFRA does not have a plugin!
-    <div id="svn"></div>
-  -->
-</div>        </div>
-      </div> <!-- End #content-wrap -->
-
-<div id="footer">
-  <div class="copyright">
-    <p>
-      Copyright &copy; 2011-2026 The Apache Software Foundation, Licensed under
-      the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.  <a href="https://privacy.apache.org/policies/privacy-policy-public.html">Privacy Policy</a>      <br/>
-      Apache and the Apache logo are trademarks of The Apache Software Foundation.  Apache Lucene, Apache Solr and their
-      respective logos are trademarks of the Apache Software Foundation.  Please see the <a href="https://www.apache.org/foundation/marks/">Apache Trademark Policy</a>
-      for more information.
-    </p>
-  </div>
-</div>    </div> <!-- End #wrap -->
-  </body>
-</html>
\ No newline at end of file
diff --git a/output/core/developer.html b/output/core/developer.html
deleted file mode 100644
index b47d15863..000000000
--- a/output/core/developer.html
+++ /dev/null
@@ -1,267 +0,0 @@
-<!doctype html>
-<html>
-  <head>
-<!--
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-    (the "License"); you may not use this file except in compliance with
-    the License.  You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE- 2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
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-<link href="/theme/css/lucene/global.css?v=668d0966" rel="stylesheet" type="text/css">
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-  _paq.push(['enableLinkTracking']);
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-<!-- End Matomo Code -->    <title>Apache Lucene - Lucene™ Dev</title>
-<meta name="keywords"
-       content="apache, apache lucene, apache solr, solr, lucene
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-    <meta property="og:url" content="https://lucene.apache.org/core/developer.html"/>
-    <meta property="og:title" content="Lucene™ Dev"/>
-    <meta property="og:description" content="Source Code The source files are stored using GIT (see https://git-scm.com/documentation) Latest main: git clone..."/>
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-  </head>
-  <body id="home">
-    <div id="wrap">
-      <div id="header">
-        <div id="logo" style="float:left">
-          <a href="/">
-            <img border="0" src="/theme/images/lucene/lucene_logo_green_300.png?v=668d0966" alt="Lucene Logo"/>
-          </a>
-        </div>
-<!-- TODO: Search disabled as it does not work, 2021-02-21
-<div id="search" style="float:right;zoom:1">
-  <form id="quick-search" method="GET" action="https://sematext.com/opensee/lucene" name="searchform">
-    <fieldset>
-      <input type="search" id="q" name="q" placeholder="Search with Apache Solr..." class="class1 class2 hint" accesskey="q">
-    </fieldset>
-  </form>
-</div>-->
-        <div id="nav">
-          <ul>
-<li><a href="/core/index.html">Core</a></li>
-<li><a href="/core/corenews.html">News</a></li>
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-<li><a href="/core/documentation.html">Documentation</a></li>
-<li><a href="/core/quickstart.html">Tutorials</a></li>
-<li><a href="https://github.com/apache/lucene/issues">Issue Tracker</a></li>
-<li><a class="last" href="/">Lucene TLP</a></li>
-          </ul>
-        </div>
-
-<div id="slides">
-  <div class="slideshow" id="mantleSlides">
-<div id="slide1">
-  <div class="callout">
-    Ultra-fast Search Library<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene sets the standard for search and indexing performance
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-lucene.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide2" style="display:none">
-  <div class="callout">
-    Proven search capabilities<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene is the de facto standard for search libraries
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Lucene Power" src="/theme/images/lucene/mantle-power.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide3" style="display:none">
-  <div class="callout">
-    Innovation and Maturity
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene has proven stability as well as a track record of innovation
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-innovation.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide4" style="display:none">
-  <div class="callout">
-    Apache 2.0 licensed
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene is distributed under a commercially friendly Apache Software license
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Software Foundation" src="/theme/images/lucene/mantle-asf.png?v=668d0966"/>
-  </div>
-</div>  </div>
-  <div class="controls">
-    <a class="next" id="next" title="Next" href="#">Next</a>
-    <a class="previous" id="previous" title="Previous" href="#">Previous</a>
-    <a class="start" id="start" title="Start" href="#" style="display: none; ">Start</a>
-    <a class="stop" id="stop" title="Stop" href="#">Stop</a>
-  </div>
-
-  <script type="text/javascript">
-    function StartSlides() {
-      new Slides('mantleSlides');
-    }
-document.observe('dom:loaded', StartSlides);
-  </script>
-</div> <!-- End #slides -->
-      </div> <!-- End #header -->
-
-      <div id="content-wrap" class="clearfix">
-        <div id="main">
-<div>
-  <h1 class="title">Lucene™ Dev</h1>
-  <h2 id="source-code">Source Code</h2>
-<p>The source files are stored using GIT (see https://git-scm.com/documentation)</p>
-<ul>
-<li>Latest <strong>main</strong>:
-<code>git clone https://github.com/apache/lucene.git</code> or <code>git clone https://gitbox.apache.org/repos/asf/lucene.git</code></li>
-</ul>
-<h2 id="making-a-contribution">Making a Contribution</h2>
-<p>Lucene Java is always looking for contributions. See the <a href="https://github.com/apache/lucene/blob/main/CONTRIBUTING.md">Wiki</a> for details on contributing.</p>
-<h2 id="nightly-builds">Nightly Builds</h2>
-<p><a href="https://www.jenkins.io/">Jenkins</a> is providing continuous integration capabilities to the Lucene project.
-It is responsible for running nightly builds, tests, javadocs, and code coverage reports.</p>
-<h3 id="nightly-build-javadocs">Nightly Build Javadocs</h3>
-<p>Unofficial nightly Javadocs are also generated by Jenkins:</p>
-<ul>
-<li>Unofficial Javadocs from the nightly <strong>main</strong> build are available <a href="https://ci-builds.apache.org/job/Lucene/job/Lucene-Artifacts-main/javadoc/">here</a>.</li>
-</ul>
-<h3 id="nightly-build-download">Nightly Build Download</h3>
-<ul>
-<li>Nightly build artifacts are based on the <strong>main</strong> version of the code checked into <a href="https://git-wip-us.apache.org/repos/asf?p=lucene.git">GIT</a>: <br/>
-  <a href="https://ci-builds.apache.org/job/Lucene/job/Lucene-Artifacts-main/lastSuccessfulBuild/">Download main Artifacts</a>. Also, Maven artifacts are available from <a href="https://repository.apache.org/snapshots/org/apache/lucene/">the ASF snapshot repository</a>.</li>
-</ul>
-<h2 id="nightly-benchmarks">Nightly Benchmarks</h2>
-<ul>
-<li>Nightly automated benchmarks based on the <strong>main</strong> version of the code are available <a href="https://benchmarks.mikemccandless.com/">here</a>.</li>
-</ul>
-</div>
-        </div>
-        <div id="sidebar">
-<div class="button-wrapper">
-  <div class="button-green">
-    <a href="/core/downloads.html">Download</a>
-    <div class="flap top">Click to</div>
-    <div class="flap bottom">Apache Lucene 10.4.0</div>
-  </div>
-  <div class="download-desc">Apache Lucene 10.4.0</div>
-</div>
-
-<h1 id="resources">Resources</h1>
-<ul>
-  <li><a href="/core/discussion.html">Mailing Lists</a></li>
-  <li><a href="/core/developer.html">Developer</a></li>
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-  <li><a href="/core/systemreqs.html">System Requirements</a></li>
-</ul>
-
-<h1 id="release-docs">Release Docs</h1>
-<ul>
-  <li><a href="/core/10_4_0/index.html">10.4.0</a></li>
-</ul>
-
-<h1 id="about">About</h1>
-<ul>
-  <li><a href="https://www.apache.org/licenses/">License</a></li>
-  <li><a href="/whoweare.html">Who We are</a></li>
-</ul>
-
-<h1 id="events">Events</h1>
-<ul>
-  <a class="acevent" data-format="square" data-mode="light" data-width="160" data-style="border: 1px solid lightgrey"></a>
-</ul>
-
-<h1 id="asf-links">ASF links</h1>
-<ul>
-  <li><a href="https://www.apache.org">Apache Software Foundation</a></li>
-  <li><a href="https://www.apache.org/foundation/thanks.html">Thanks</a></li>
-  <li><a href="https://www.apache.org/foundation/sponsorship.html">Become a Sponsor</a></li>
-  <li><a href="https://www.apache.org/security/">Security</a></li>
-</ul>
-
-<h1 id="related-projects">Related Projects</h1>
-<ul>
-  <li><a href="https://solr.apache.org">Apache Solr</a></li>
-  <li><a href="http://hadoop.apache.org">Apache Hadoop</a></li>
-  <li><a href="http://manifoldcf.apache.org/">Apache ManifoldCF</a></li>
-  <li><a href="http://lucenenet.apache.org/">Apache Lucene.Net</a></li>
-  <li><a href="http://mahout.apache.org">Apache Mahout</a></li>
-  <li><a href="http://nutch.apache.org">Apache Nutch</a></li>
-  <li><a href="http://opennlp.apache.org/">Apache OpenNLP</a></li>
-  <li><a href="http://tika.apache.org">Apache Tika</a></li>
-  <li><a href="http://zookeeper.apache.org">Apache Zookeeper</a></li>
-</ul>
-
-<div class="status">
-  <!-- No SVN anymore; TODO: how to do Git? INFRA does not have a plugin!
-    <div id="svn"></div>
-  -->
-</div>        </div>
-      </div> <!-- End #content-wrap -->
-
-<div id="footer">
-  <div class="copyright">
-    <p>
-      Copyright &copy; 2011-2026 The Apache Software Foundation, Licensed under
-      the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.  <a href="https://privacy.apache.org/policies/privacy-policy-public.html">Privacy Policy</a>      <br/>
-      Apache and the Apache logo are trademarks of The Apache Software Foundation.  Apache Lucene, Apache Solr and their
-      respective logos are trademarks of the Apache Software Foundation.  Please see the <a href="https://www.apache.org/foundation/marks/">Apache Trademark Policy</a>
-      for more information.
-    </p>
-  </div>
-</div>    </div> <!-- End #wrap -->
-  </body>
-</html>
\ No newline at end of file
diff --git a/output/core/discussion.html b/output/core/discussion.html
deleted file mode 100644
index 75169c089..000000000
--- a/output/core/discussion.html
+++ /dev/null
@@ -1,318 +0,0 @@
-<!doctype html>
-<html>
-  <head>
-<!--
-    Licensed to the Apache Software Foundation (ASF) under one or more
-    contributor license agreements.  See the NOTICE file distributed with
-    this work for additional information regarding copyright ownership.
-    The ASF licenses this file to You under the Apache License, Version 2.0
-    (the "License"); you may not use this file except in compliance with
-    the License.  You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE- 2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
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-  _paq.push(["disableCookies"]);
-  _paq.push(['trackPageView']);
-  _paq.push(['enableLinkTracking']);
-  (function() {
-    var u="https://analytics.apache.org/";
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-<!-- End Matomo Code -->    <title>Apache Lucene - Lucene™ Mailing Lists and IRC</title>
-<meta name="keywords"
-       content="apache, apache lucene, apache solr, solr, lucene
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-    <meta property="og:url" content="https://lucene.apache.org/core/discussion.html"/>
-    <meta property="og:title" content="Lucene™ Mailing Lists and IRC"/>
-    <meta property="og:description" content="Java User List: java-user@lucene.apache.org This list is for users of Java Lucene to ask questions, share knowledge, and discuss..."/>
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-<link rel="shortcut icon" type="image/png"
-                                                 href="/theme/images/lucene/lucene-favicon.png?v=668d0966"/><link href="/theme/css/lucene/core.css?v=668d0966" rel="stylesheet" type="text/css">
-  </head>
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-        <div id="logo" style="float:left">
-          <a href="/">
-            <img border="0" src="/theme/images/lucene/lucene_logo_green_300.png?v=668d0966" alt="Lucene Logo"/>
-          </a>
-        </div>
-<!-- TODO: Search disabled as it does not work, 2021-02-21
-<div id="search" style="float:right;zoom:1">
-  <form id="quick-search" method="GET" action="https://sematext.com/opensee/lucene" name="searchform">
-    <fieldset>
-      <input type="search" id="q" name="q" placeholder="Search with Apache Solr..." class="class1 class2 hint" accesskey="q">
-    </fieldset>
-  </form>
-</div>-->
-        <div id="nav">
-          <ul>
-<li><a href="/core/index.html">Core</a></li>
-<li><a href="/core/corenews.html">News</a></li>
-<li><a href="/core/downloads.html">Download</a></li>
-<li><a href="/core/discussion.html">Mailing Lists</a></li>
-<li><a href="/core/documentation.html">Documentation</a></li>
-<li><a href="/core/quickstart.html">Tutorials</a></li>
-<li><a href="https://github.com/apache/lucene/issues">Issue Tracker</a></li>
-<li><a class="last" href="/">Lucene TLP</a></li>
-          </ul>
-        </div>
-
-<div id="slides">
-  <div class="slideshow" id="mantleSlides">
-<div id="slide1">
-  <div class="callout">
-    Ultra-fast Search Library<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene sets the standard for search and indexing performance
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-lucene.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide2" style="display:none">
-  <div class="callout">
-    Proven search capabilities<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene is the de facto standard for search libraries
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Lucene Power" src="/theme/images/lucene/mantle-power.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide3" style="display:none">
-  <div class="callout">
-    Innovation and Maturity
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene has proven stability as well as a track record of innovation
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-innovation.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide4" style="display:none">
-  <div class="callout">
-    Apache 2.0 licensed
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene is distributed under a commercially friendly Apache Software license
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Software Foundation" src="/theme/images/lucene/mantle-asf.png?v=668d0966"/>
-  </div>
-</div>  </div>
-  <div class="controls">
-    <a class="next" id="next" title="Next" href="#">Next</a>
-    <a class="previous" id="previous" title="Previous" href="#">Previous</a>
-    <a class="start" id="start" title="Start" href="#" style="display: none; ">Start</a>
-    <a class="stop" id="stop" title="Stop" href="#">Stop</a>
-  </div>
-
-  <script type="text/javascript">
-    function StartSlides() {
-      new Slides('mantleSlides');
-    }
-document.observe('dom:loaded', StartSlides);
-  </script>
-</div> <!-- End #slides -->
-      </div> <!-- End #header -->
-
-      <div id="content-wrap" class="clearfix">
-        <div id="main">
-<div>
-  <h1 class="title">Lucene™ Mailing Lists and IRC</h1>
-  <div class="toc">
-    <div class="toc">
-<ul>
-<li><a href="#java-user-list-java-userluceneapacheorg">Java User List: java-user@lucene.apache.org</a></li>
-<li><a href="#developer-lists">Developer Lists</a><ul>
-<li><a href="#developer-discussion-devluceneapacheorg">Developer Discussion: dev@lucene.apache.org</a></li>
-<li><a href="#issue-notifications-issueslucene">Issue Notifications: issues@lucene</a></li>
-<li><a href="#build-notifications-buildslucene">Build Notifications: builds@lucene</a></li>
-<li><a href="#commit-notifications-commitslucene">Commit Notifications: commits@lucene</a></li>
-</ul>
-</li>
-<li><a href="#irc">IRC</a></li>
-<li><a href="#slack">Slack</a></li>
-<li><a href="#mail-archives">Mail Archives</a></li>
-<li><a href="#retired-mailing-lists">Retired mailing lists</a></li>
-</ul>
-</div>
-  </div>
-  
-<h2 id="java-user-list-java-userluceneapacheorg">Java User List: java-user@lucene.apache.org</h2>
-<p>This list is for users of Java Lucene to ask questions, share knowledge,
-and discuss issues. <strong>Do</strong> send mail to this list with usage and configuration questions and problems.  Also, please
-send questions to this list to verify your problem before filing issues in JIRA.</p>
-<ul>
-<li>Subscribe: <a href="mailto:java-user-subscribe@lucene.apache.org">java-user-subscribe</a></li>
-<li>Unsubscribe: <a href="mailto:java-user-unsubscribe@lucene.apache.org">java-user-unsubscribe</a></li>
-<li>Send: <a href="mailto:java-user@lucene.apache.org">java-user</a> (Requires subscription)</li>
-<li><a href="http://mail-archives.apache.org/mod_mbox/lucene-java-user/">Apache Archive</a></li>
-</ul>
-<h2 id="developer-lists">Developer Lists</h2>
-<h3 id="developer-discussion-devluceneapacheorg">Developer Discussion: dev@lucene.apache.org</h3>
-<p>This is the list where participating developers of the Java Lucene project meet
-and discuss issues concerning Lucene internals, code changes/additions, etc.</p>
-<p><strong><em>NOTE:</em></strong> <em>Please do not send mail to this list with usage questions or configuration
-questions and problems; that is what the java-user mailing list is for.</em></p>
-<ul>
-<li>Subscribe: <a href="mailto:dev-subscribe@lucene.apache.org">dev-subscribe</a></li>
-<li>Unsubscribe: <a href="mailto:dev-unsubscribe@lucene.apache.org">dev-unsubscribe</a></li>
-<li>Send: <a href="mailto:dev@lucene.apache.org">dev</a> (Requires subscription)</li>
-<li><a href="http://mail-archives.apache.org/mod_mbox/lucene-dev/">Apache Archive</a></li>
-</ul>
-<h3 id="issue-notifications-issueslucene">Issue Notifications: issues@lucene</h3>
-<p>This is an automated announcement only list where notifications about all JIRA issues and Github pull requests are sent.</p>
-<p>Subscribe: <a href="mailto:issues-subscribe@lucene.apache.org">issues-subscribe</a></p>
-<p>Unsubscribe: <a href="mailto:issues-unsubscribe@lucene.apache.org">issues-unsubscribe</a></p>
-<p><a href="http://mail-archives.apache.org/mod_mbox/lucene-issues/">Official Apache Archive</a></p>
-<h3 id="build-notifications-buildslucene">Build Notifications: builds@lucene</h3>
-<p>This is an automated announcement only list where notifications about all CI builds by Jenkins are sent.</p>
-<p>Subscribe: <a href="mailto:builds-subscribe@lucene.apache.org">builds-subscribe</a></p>
-<p>Unsubscribe: <a href="mailto:builds-unsubscribe@lucene.apache.org">builds-unsubscribe</a></p>
-<p><a href="http://mail-archives.apache.org/mod_mbox/lucene-builds/">Apache Archive</a></p>
-<h3 id="commit-notifications-commitslucene">Commit Notifications: commits@lucene</h3>
-<p>This is an automated announcement only list where notifications about every Lucene commit are sent.</p>
-<ul>
-<li>Subscribe: <a href="mailto:commits-subscribe@lucene.apache.org">commits-subscribe</a></li>
-<li>Unsubscribe: <a href="mailto:commits-unsubscribe@lucene.apache.org">commits-unsubscribe</a></li>
-<li><a href="http://mail-archives.apache.org/mod_mbox/lucene-commits/">Apache Archive</a></li>
-</ul>
-<h2 id="irc">IRC</h2>
-<p>There are two primary IRC channels dedicated to Lucene at <a href="http://freenode.net/">freenode.net</a>.</p>
-<ul>
-<li><strong>#lucene</strong> -- Channel for user questions</li>
-<li><strong>#lucene-dev</strong> -- <a href="http://colabti.org/irclogger/irclogger_logs/lucene-dev">Logged Channel</a> for Lucene development questions</li>
-</ul>
-<p>The IRC channel can be used for online discussion about Lucene related stuff,
-but developers should be careful to transfer all the official decisions or useful discussions to the issue tracking system.</p>
-<h2 id="slack">Slack</h2>
-<p>The project's Slack channel is the <strong>#lucene-dev</strong> channel in the <strong>the-asf</strong> organization. Link: <a href="https://the-asf.slack.com/messages/CE70MDPMF">https://the-asf.slack.com/messages/CE70MDPMF</a></p>
-<h2 id="mail-archives">Mail Archives</h2>
-<p>Use the Apache service <a href="https://lists.apache.org/list.html?dev@lucene.apache.org">Ponymail - lists.apache.org</a> to 
-browse the mail archives of all the project's mailing lists.</p>
-<h2 id="retired-mailing-lists">Retired mailing lists</h2>
-<p>These lists are no longer in use, so we just provide a link to the archives.</p>
-<ul>
-<li><a href="http://mail-archives.apache.org/mod_mbox/lucene-general/">general@lucene.apache.org</a></li>
-</ul>
-</div>
-        </div>
-        <div id="sidebar">
-<div class="button-wrapper">
-  <div class="button-green">
-    <a href="/core/downloads.html">Download</a>
-    <div class="flap top">Click to</div>
-    <div class="flap bottom">Apache Lucene 10.4.0</div>
-  </div>
-  <div class="download-desc">Apache Lucene 10.4.0</div>
-</div>
-
-<h1 id="resources">Resources</h1>
-<ul>
-  <li><a href="/core/discussion.html">Mailing Lists</a></li>
-  <li><a href="/core/developer.html">Developer</a></li>
-  <li><a href="/core/features.html">Features</a></li>
-  <li><a href="/core/downloads.html">Releases</a></li>
-  <li><a href="/core/systemreqs.html">System Requirements</a></li>
-</ul>
-
-<h1 id="release-docs">Release Docs</h1>
-<ul>
-  <li><a href="/core/10_4_0/index.html">10.4.0</a></li>
-</ul>
-
-<h1 id="about">About</h1>
-<ul>
-  <li><a href="https://www.apache.org/licenses/">License</a></li>
-  <li><a href="/whoweare.html">Who We are</a></li>
-</ul>
-
-<h1 id="events">Events</h1>
-<ul>
-  <a class="acevent" data-format="square" data-mode="light" data-width="160" data-style="border: 1px solid lightgrey"></a>
-</ul>
-
-<h1 id="asf-links">ASF links</h1>
-<ul>
-  <li><a href="https://www.apache.org">Apache Software Foundation</a></li>
-  <li><a href="https://www.apache.org/foundation/thanks.html">Thanks</a></li>
-  <li><a href="https://www.apache.org/foundation/sponsorship.html">Become a Sponsor</a></li>
-  <li><a href="https://www.apache.org/security/">Security</a></li>
-</ul>
-
-<h1 id="related-projects">Related Projects</h1>
-<ul>
-  <li><a href="https://solr.apache.org">Apache Solr</a></li>
-  <li><a href="http://hadoop.apache.org">Apache Hadoop</a></li>
-  <li><a href="http://manifoldcf.apache.org/">Apache ManifoldCF</a></li>
-  <li><a href="http://lucenenet.apache.org/">Apache Lucene.Net</a></li>
-  <li><a href="http://mahout.apache.org">Apache Mahout</a></li>
-  <li><a href="http://nutch.apache.org">Apache Nutch</a></li>
-  <li><a href="http://opennlp.apache.org/">Apache OpenNLP</a></li>
-  <li><a href="http://tika.apache.org">Apache Tika</a></li>
-  <li><a href="http://zookeeper.apache.org">Apache Zookeeper</a></li>
-</ul>
-
-<div class="status">
-  <!-- No SVN anymore; TODO: how to do Git? INFRA does not have a plugin!
-    <div id="svn"></div>
-  -->
-</div>        </div>
-      </div> <!-- End #content-wrap -->
-
-<div id="footer">
-  <div class="copyright">
-    <p>
-      Copyright &copy; 2011-2026 The Apache Software Foundation, Licensed under
-      the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.  <a href="https://privacy.apache.org/policies/privacy-policy-public.html">Privacy Policy</a>      <br/>
-      Apache and the Apache logo are trademarks of The Apache Software Foundation.  Apache Lucene, Apache Solr and their
-      respective logos are trademarks of the Apache Software Foundation.  Please see the <a href="https://www.apache.org/foundation/marks/">Apache Trademark Policy</a>
-      for more information.
-    </p>
-  </div>
-</div>    </div> <!-- End #wrap -->
-  </body>
-</html>
\ No newline at end of file
diff --git a/output/core/documentation.html b/output/core/documentation.html
deleted file mode 100644
index ea2e0bb39..000000000
--- a/output/core/documentation.html
+++ /dev/null
@@ -1,251 +0,0 @@
-<!doctype html>
-<html>
-  <head>
-<!--
-    Licensed to the Apache Software Foundation (ASF) under one or more
-    contributor license agreements.  See the NOTICE file distributed with
-    this work for additional information regarding copyright ownership.
-    The ASF licenses this file to You under the Apache License, Version 2.0
-    (the "License"); you may not use this file except in compliance with
-    the License.  You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE- 2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
--->
-<link href="/theme/css/lucene/global.css?v=668d0966" rel="stylesheet" type="text/css">
-
-<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/>
-<meta name="Distribution" content="Global"/>
-<meta name="Robots" content="index,follow"/>
-
-<script type="text/javascript" src="/theme/javascript/lucene/prototype.js?v=668d0966"></script>
-<script type="text/javascript" src="/theme/javascript/lucene/effects.js?v=668d0966"></script>
-<script type="text/javascript" src="/theme/javascript/lucene/slides.js?v=668d0966"></script>
-<script src="https://www.apachecon.com/event-images/snippet.js"></script>
-<!-- Matomo -->
-<script>
-  var _paq = window._paq = window._paq || [];
-  /* tracker methods like "setCustomDimension" should be called before
-"trackPageView" */
-  _paq.push(["setDoNotTrack", true]);
-  _paq.push(["disableCookies"]);
-  _paq.push(['trackPageView']);
-  _paq.push(['enableLinkTracking']);
-  (function() {
-    var u="https://analytics.apache.org/";
-    _paq.push(['setTrackerUrl', u+'matomo.php']);
-    _paq.push(['setSiteId', '85']);
-    var d=document, g=d.createElement('script'),
-s=d.getElementsByTagName('script')[0];
-    g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
-  })();
-</script>
-<!-- End Matomo Code -->    <title>Apache Lucene - Lucene™ Release Docs</title>
-<meta name="keywords"
-       content="apache, apache lucene, apache solr, solr, lucene
-       search, information retrieval, spell checking, faceting, inverted index,
-       open source"/>    <meta property="og:type" content="website" />
-    <meta property="og:url" content="https://lucene.apache.org/core/documentation.html"/>
-    <meta property="og:title" content="Lucene™ Release Docs"/>
-    <meta property="og:description" content=""/>
-    <meta property="og:image" content="https://lucene.apache.org/theme/images/lucene/lucene_og_image.png?v=668d0966"/>
-    <meta property="og:image:secure_url" content="https://lucene.apache.org/theme/images/lucene/lucene_og_image.png?v=668d0966"/>
-<link rel="shortcut icon" type="image/png"
-                                                 href="/theme/images/lucene/lucene-favicon.png?v=668d0966"/><link href="/theme/css/lucene/core.css?v=668d0966" rel="stylesheet" type="text/css">
-  </head>
-  <body id="home">
-    <div id="wrap">
-      <div id="header">
-        <div id="logo" style="float:left">
-          <a href="/">
-            <img border="0" src="/theme/images/lucene/lucene_logo_green_300.png?v=668d0966" alt="Lucene Logo"/>
-          </a>
-        </div>
-<!-- TODO: Search disabled as it does not work, 2021-02-21
-<div id="search" style="float:right;zoom:1">
-  <form id="quick-search" method="GET" action="https://sematext.com/opensee/lucene" name="searchform">
-    <fieldset>
-      <input type="search" id="q" name="q" placeholder="Search with Apache Solr..." class="class1 class2 hint" accesskey="q">
-    </fieldset>
-  </form>
-</div>-->
-        <div id="nav">
-          <ul>
-<li><a href="/core/index.html">Core</a></li>
-<li><a href="/core/corenews.html">News</a></li>
-<li><a href="/core/downloads.html">Download</a></li>
-<li><a href="/core/discussion.html">Mailing Lists</a></li>
-<li><a href="/core/documentation.html">Documentation</a></li>
-<li><a href="/core/quickstart.html">Tutorials</a></li>
-<li><a href="https://github.com/apache/lucene/issues">Issue Tracker</a></li>
-<li><a class="last" href="/">Lucene TLP</a></li>
-          </ul>
-        </div>
-
-<div id="slides">
-  <div class="slideshow" id="mantleSlides">
-<div id="slide1">
-  <div class="callout">
-    Ultra-fast Search Library<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene sets the standard for search and indexing performance
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-lucene.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide2" style="display:none">
-  <div class="callout">
-    Proven search capabilities<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene is the de facto standard for search libraries
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Lucene Power" src="/theme/images/lucene/mantle-power.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide3" style="display:none">
-  <div class="callout">
-    Innovation and Maturity
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene has proven stability as well as a track record of innovation
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-innovation.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide4" style="display:none">
-  <div class="callout">
-    Apache 2.0 licensed
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene is distributed under a commercially friendly Apache Software license
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Software Foundation" src="/theme/images/lucene/mantle-asf.png?v=668d0966"/>
-  </div>
-</div>  </div>
-  <div class="controls">
-    <a class="next" id="next" title="Next" href="#">Next</a>
-    <a class="previous" id="previous" title="Previous" href="#">Previous</a>
-    <a class="start" id="start" title="Start" href="#" style="display: none; ">Start</a>
-    <a class="stop" id="stop" title="Stop" href="#">Stop</a>
-  </div>
-
-  <script type="text/javascript">
-    function StartSlides() {
-      new Slides('mantleSlides');
-    }
-document.observe('dom:loaded', StartSlides);
-  </script>
-</div> <!-- End #slides -->
-      </div> <!-- End #header -->
-
-      <div id="content-wrap" class="clearfix">
-        <div id="main">
-<div>
-  <div>
-  <h1 class="title">Lucene™ Release Docs</h1>
-  
-</div>
-
-  <h2>Java Docs</h2>
-  <ul>
-    <li><a href="/core/10_4_0/index.html">10.4.0</a></li>
-    <li><a href="/core/9_12_3/index.html">9.12.3</a></li>
-  </ul>
-</div>
-        </div>
-        <div id="sidebar">
-<div class="button-wrapper">
-  <div class="button-green">
-    <a href="/core/downloads.html">Download</a>
-    <div class="flap top">Click to</div>
-    <div class="flap bottom">Apache Lucene 10.4.0</div>
-  </div>
-  <div class="download-desc">Apache Lucene 10.4.0</div>
-</div>
-
-<h1 id="resources">Resources</h1>
-<ul>
-  <li><a href="/core/discussion.html">Mailing Lists</a></li>
-  <li><a href="/core/developer.html">Developer</a></li>
-  <li><a href="/core/features.html">Features</a></li>
-  <li><a href="/core/downloads.html">Releases</a></li>
-  <li><a href="/core/systemreqs.html">System Requirements</a></li>
-</ul>
-
-<h1 id="release-docs">Release Docs</h1>
-<ul>
-  <li><a href="/core/10_4_0/index.html">10.4.0</a></li>
-</ul>
-
-<h1 id="about">About</h1>
-<ul>
-  <li><a href="https://www.apache.org/licenses/">License</a></li>
-  <li><a href="/whoweare.html">Who We are</a></li>
-</ul>
-
-<h1 id="events">Events</h1>
-<ul>
-  <a class="acevent" data-format="square" data-mode="light" data-width="160" data-style="border: 1px solid lightgrey"></a>
-</ul>
-
-<h1 id="asf-links">ASF links</h1>
-<ul>
-  <li><a href="https://www.apache.org">Apache Software Foundation</a></li>
-  <li><a href="https://www.apache.org/foundation/thanks.html">Thanks</a></li>
-  <li><a href="https://www.apache.org/foundation/sponsorship.html">Become a Sponsor</a></li>
-  <li><a href="https://www.apache.org/security/">Security</a></li>
-</ul>
-
-<h1 id="related-projects">Related Projects</h1>
-<ul>
-  <li><a href="https://solr.apache.org">Apache Solr</a></li>
-  <li><a href="http://hadoop.apache.org">Apache Hadoop</a></li>
-  <li><a href="http://manifoldcf.apache.org/">Apache ManifoldCF</a></li>
-  <li><a href="http://lucenenet.apache.org/">Apache Lucene.Net</a></li>
-  <li><a href="http://mahout.apache.org">Apache Mahout</a></li>
-  <li><a href="http://nutch.apache.org">Apache Nutch</a></li>
-  <li><a href="http://opennlp.apache.org/">Apache OpenNLP</a></li>
-  <li><a href="http://tika.apache.org">Apache Tika</a></li>
-  <li><a href="http://zookeeper.apache.org">Apache Zookeeper</a></li>
-</ul>
-
-<div class="status">
-  <!-- No SVN anymore; TODO: how to do Git? INFRA does not have a plugin!
-    <div id="svn"></div>
-  -->
-</div>        </div>
-      </div> <!-- End #content-wrap -->
-
-<div id="footer">
-  <div class="copyright">
-    <p>
-      Copyright &copy; 2011-2026 The Apache Software Foundation, Licensed under
-      the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.  <a href="https://privacy.apache.org/policies/privacy-policy-public.html">Privacy Policy</a>      <br/>
-      Apache and the Apache logo are trademarks of The Apache Software Foundation.  Apache Lucene, Apache Solr and their
-      respective logos are trademarks of the Apache Software Foundation.  Please see the <a href="https://www.apache.org/foundation/marks/">Apache Trademark Policy</a>
-      for more information.
-    </p>
-  </div>
-</div>    </div> <!-- End #wrap -->
-  </body>
-</html>
\ No newline at end of file
diff --git a/output/core/downloads.html b/output/core/downloads.html
deleted file mode 100644
index c2486fff8..000000000
--- a/output/core/downloads.html
+++ /dev/null
@@ -1,309 +0,0 @@
-<!doctype html>
-<html>
-  <head>
-<!--
-    Licensed to the Apache Software Foundation (ASF) under one or more
-    contributor license agreements.  See the NOTICE file distributed with
-    this work for additional information regarding copyright ownership.
-    The ASF licenses this file to You under the Apache License, Version 2.0
-    (the "License"); you may not use this file except in compliance with
-    the License.  You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE- 2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
--->
-<link href="/theme/css/lucene/global.css?v=668d0966" rel="stylesheet" type="text/css">
-
-<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/>
-<meta name="Distribution" content="Global"/>
-<meta name="Robots" content="index,follow"/>
-
-<script type="text/javascript" src="/theme/javascript/lucene/prototype.js?v=668d0966"></script>
-<script type="text/javascript" src="/theme/javascript/lucene/effects.js?v=668d0966"></script>
-<script type="text/javascript" src="/theme/javascript/lucene/slides.js?v=668d0966"></script>
-<script src="https://www.apachecon.com/event-images/snippet.js"></script>
-<!-- Matomo -->
-<script>
-  var _paq = window._paq = window._paq || [];
-  /* tracker methods like "setCustomDimension" should be called before
-"trackPageView" */
-  _paq.push(["setDoNotTrack", true]);
-  _paq.push(["disableCookies"]);
-  _paq.push(['trackPageView']);
-  _paq.push(['enableLinkTracking']);
-  (function() {
-    var u="https://analytics.apache.org/";
-    _paq.push(['setTrackerUrl', u+'matomo.php']);
-    _paq.push(['setSiteId', '85']);
-    var d=document, g=d.createElement('script'),
-s=d.getElementsByTagName('script')[0];
-    g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
-  })();
-</script>
-<!-- End Matomo Code -->    <title>Apache Lucene - Lucene™ Downloads</title>
-<meta name="keywords"
-       content="apache, apache lucene, apache solr, solr, lucene
-       search, information retrieval, spell checking, faceting, inverted index,
-       open source"/>    <meta property="og:type" content="website" />
-    <meta property="og:url" content="https://lucene.apache.org/core/downloads.html"/>
-    <meta property="og:title" content="Lucene™ Downloads"/>
-    <meta property="og:description" content="Official releases are usually created when the developers feel there are sufficient changes, improvements and bug fixes to warrant a..."/>
-    <meta property="og:image" content="https://lucene.apache.org/theme/images/lucene/lucene_og_image.png?v=668d0966"/>
-    <meta property="og:image:secure_url" content="https://lucene.apache.org/theme/images/lucene/lucene_og_image.png?v=668d0966"/>
-<link rel="shortcut icon" type="image/png"
-                                                 href="/theme/images/lucene/lucene-favicon.png?v=668d0966"/><link href="/theme/css/lucene/core.css?v=668d0966" rel="stylesheet" type="text/css">
-  </head>
-  <body id="home">
-    <div id="wrap">
-      <div id="header">
-        <div id="logo" style="float:left">
-          <a href="/">
-            <img border="0" src="/theme/images/lucene/lucene_logo_green_300.png?v=668d0966" alt="Lucene Logo"/>
-          </a>
-        </div>
-<!-- TODO: Search disabled as it does not work, 2021-02-21
-<div id="search" style="float:right;zoom:1">
-  <form id="quick-search" method="GET" action="https://sematext.com/opensee/lucene" name="searchform">
-    <fieldset>
-      <input type="search" id="q" name="q" placeholder="Search with Apache Solr..." class="class1 class2 hint" accesskey="q">
-    </fieldset>
-  </form>
-</div>-->
-        <div id="nav">
-          <ul>
-<li><a href="/core/index.html">Core</a></li>
-<li><a href="/core/corenews.html">News</a></li>
-<li><a href="/core/downloads.html">Download</a></li>
-<li><a href="/core/discussion.html">Mailing Lists</a></li>
-<li><a href="/core/documentation.html">Documentation</a></li>
-<li><a href="/core/quickstart.html">Tutorials</a></li>
-<li><a href="https://github.com/apache/lucene/issues">Issue Tracker</a></li>
-<li><a class="last" href="/">Lucene TLP</a></li>
-          </ul>
-        </div>
-
-<div id="slides">
-  <div class="slideshow" id="mantleSlides">
-<div id="slide1">
-  <div class="callout">
-    Ultra-fast Search Library<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene sets the standard for search and indexing performance
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-lucene.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide2" style="display:none">
-  <div class="callout">
-    Proven search capabilities<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene is the de facto standard for search libraries
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Lucene Power" src="/theme/images/lucene/mantle-power.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide3" style="display:none">
-  <div class="callout">
-    Innovation and Maturity
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene has proven stability as well as a track record of innovation
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-innovation.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide4" style="display:none">
-  <div class="callout">
-    Apache 2.0 licensed
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene is distributed under a commercially friendly Apache Software license
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Software Foundation" src="/theme/images/lucene/mantle-asf.png?v=668d0966"/>
-  </div>
-</div>  </div>
-  <div class="controls">
-    <a class="next" id="next" title="Next" href="#">Next</a>
-    <a class="previous" id="previous" title="Previous" href="#">Previous</a>
-    <a class="start" id="start" title="Start" href="#" style="display: none; ">Start</a>
-    <a class="stop" id="stop" title="Stop" href="#">Stop</a>
-  </div>
-
-  <script type="text/javascript">
-    function StartSlides() {
-      new Slides('mantleSlides');
-    }
-document.observe('dom:loaded', StartSlides);
-  </script>
-</div> <!-- End #slides -->
-      </div> <!-- End #header -->
-
-      <div id="content-wrap" class="clearfix">
-        <div id="main">
-<div>
-  <div>
-  <h1 class="title">Lucene™ Downloads</h1>
-  <p>Official releases are usually created when the <a href="/whoweare.html">developers</a>
-feel there are sufficient changes, improvements and bug fixes to warrant a release.
-Due to the voluntary nature of Lucene, no releases are scheduled in advance.
-System Requirements are detailed <a href="/core/systemreqs.html">here</a>.</p>
-</div>
-
-  <h3 id="lucene-1040">Lucene 10.4.0
-    <a class="headerlink" href="#lucene-1040" title="Permanent link">¶</a>
-  </h3>
-
-  <p>Lucene 10.4.0 is the most recent Apache Lucene release.</p>
-
-  <ul>
-    <li>Source release:
-      <a href="https://www.apache.org/dyn/closer.lua/lucene/java/10.4.0/lucene-10.4.0-src.tgz">lucene-10.4.0-src.tgz</a>
-      [<a href="https://downloads.apache.org/lucene/java/10.4.0/lucene-10.4.0-src.tgz.asc">PGP</a>]
-      [<a href="https://downloads.apache.org/lucene/java/10.4.0/lucene-10.4.0-src.tgz.sha512">SHA512</a>]
-    </li>
-
-    <li>Binary releases:
-      <a href="https://www.apache.org/dyn/closer.lua/lucene/java/10.4.0/lucene-10.4.0.tgz">lucene-10.4.0.tgz</a>
-      [<a href="https://downloads.apache.org/lucene/java/10.4.0/lucene-10.4.0.tgz.asc">PGP</a>]
-      [<a href="https://downloads.apache.org/lucene/java/10.4.0/lucene-10.4.0.tgz.sha512">SHA512</a>]
-    </li>
-
-    <li><a href="/core/10_4_0/changes/Changes.html">Change log</a></li>
-  </ul>
-
-  <h3 id="lucene-9123">Lucene 9.12.3
-    <a class="headerlink" href="#lucene-9123" title="Permanent link">¶</a>
-  </h3>
-
-  <p>Lucene 9.12.3 is the latest in the 9.x series.</p>
-
-  <ul>
-    <li>Source release:
-      <a href="https://www.apache.org/dyn/closer.lua/lucene/java/9.12.3/lucene-9.12.3-src.tgz">lucene-9.12.3-src.tgz</a>
-      [<a href="https://downloads.apache.org/lucene/java/9.12.3/lucene-9.12.3-src.tgz.asc">PGP</a>]
-      [<a href="https://downloads.apache.org/lucene/java/9.12.3/lucene-9.12.3-src.tgz.sha512">SHA512</a>]
-    </li>
-
-    <li>Binary releases:
-      <a href="https://www.apache.org/dyn/closer.lua/lucene/java/9.12.3/lucene-9.12.3.tgz">lucene-9.12.3.tgz</a>
-      [<a href="https://downloads.apache.org/lucene/java/9.12.3/lucene-9.12.3.tgz.asc">PGP</a>]
-      [<a href="https://downloads.apache.org/lucene/java/9.12.3/lucene-9.12.3.tgz.sha512">SHA512</a>]
-      /
-      <a href="https://www.apache.org/dyn/closer.lua/lucene/java/9.12.3/lucene-9.12.3.zip">lucene-9.12.3.zip</a>
-      [<a href="https://downloads.apache.org/lucene/java/9.12.3/lucene-9.12.3.zip.asc">PGP</a>]
-      [<a href="https://downloads.apache.org/lucene/java/9.12.3/lucene-9.12.3.zip.sha512">SHA512</a>]
-    </li>
-
-    <li><a href="/core/9_12_3/changes/Changes.html">Change log</a></li>
-  </ul>
-
-  <p>The above release files should be verified using the PGP signatures and the <a href="https://downloads.apache.org/lucene/KEYS">project release KEYS</a>.
-  See <a href="https://www.apache.org/dyn/closer.cgi#verify">verification instructions</a> for a description of using the PGP and KEYS files for verification.
-  SHA checksums are also provided as alternative verification method.</p>
-
-  <h3 id="older-releases">Older releases
-    <a class="headerlink" href="#older-releases" title="Permanent link">¶</a>
-  </h3>
-
-  <p>Archives for all past versions of Lucene are available at <a href="https://archive.apache.org/dist/lucene/java/">the Apache archives</a>.</p>
-  <p>The <tt>lucene-VERSION.zip</tt> or <tt>.tar.gz</tt> (where VERSION is the version number of the release, e.g. 3.0.1) file contains the
-  lucene-core jar file, html documentation, a demo application (see the "Getting Started" section) and various jar files containing contributed code.
-  The <tt>lucene-VERSION-src.zip</tt> or <tt>.tar.gz</tt> contains the full source code for that version.</p>
-</div>
-        </div>
-        <div id="sidebar">
-<div class="button-wrapper">
-  <div class="button-green">
-    <a href="/core/downloads.html">Download</a>
-    <div class="flap top">Click to</div>
-    <div class="flap bottom">Apache Lucene 10.4.0</div>
-  </div>
-  <div class="download-desc">Apache Lucene 10.4.0</div>
-</div>
-
-<h1 id="resources">Resources</h1>
-<ul>
-  <li><a href="/core/discussion.html">Mailing Lists</a></li>
-  <li><a href="/core/developer.html">Developer</a></li>
-  <li><a href="/core/features.html">Features</a></li>
-  <li><a href="/core/downloads.html">Releases</a></li>
-  <li><a href="/core/systemreqs.html">System Requirements</a></li>
-</ul>
-
-<h1 id="release-docs">Release Docs</h1>
-<ul>
-  <li><a href="/core/10_4_0/index.html">10.4.0</a></li>
-</ul>
-
-<h1 id="about">About</h1>
-<ul>
-  <li><a href="https://www.apache.org/licenses/">License</a></li>
-  <li><a href="/whoweare.html">Who We are</a></li>
-</ul>
-
-<h1 id="events">Events</h1>
-<ul>
-  <a class="acevent" data-format="square" data-mode="light" data-width="160" data-style="border: 1px solid lightgrey"></a>
-</ul>
-
-<h1 id="asf-links">ASF links</h1>
-<ul>
-  <li><a href="https://www.apache.org">Apache Software Foundation</a></li>
-  <li><a href="https://www.apache.org/foundation/thanks.html">Thanks</a></li>
-  <li><a href="https://www.apache.org/foundation/sponsorship.html">Become a Sponsor</a></li>
-  <li><a href="https://www.apache.org/security/">Security</a></li>
-</ul>
-
-<h1 id="related-projects">Related Projects</h1>
-<ul>
-  <li><a href="https://solr.apache.org">Apache Solr</a></li>
-  <li><a href="http://hadoop.apache.org">Apache Hadoop</a></li>
-  <li><a href="http://manifoldcf.apache.org/">Apache ManifoldCF</a></li>
-  <li><a href="http://lucenenet.apache.org/">Apache Lucene.Net</a></li>
-  <li><a href="http://mahout.apache.org">Apache Mahout</a></li>
-  <li><a href="http://nutch.apache.org">Apache Nutch</a></li>
-  <li><a href="http://opennlp.apache.org/">Apache OpenNLP</a></li>
-  <li><a href="http://tika.apache.org">Apache Tika</a></li>
-  <li><a href="http://zookeeper.apache.org">Apache Zookeeper</a></li>
-</ul>
-
-<div class="status">
-  <!-- No SVN anymore; TODO: how to do Git? INFRA does not have a plugin!
-    <div id="svn"></div>
-  -->
-</div>        </div>
-      </div> <!-- End #content-wrap -->
-
-<div id="footer">
-  <div class="copyright">
-    <p>
-      Copyright &copy; 2011-2026 The Apache Software Foundation, Licensed under
-      the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.  <a href="https://privacy.apache.org/policies/privacy-policy-public.html">Privacy Policy</a>      <br/>
-      Apache and the Apache logo are trademarks of The Apache Software Foundation.  Apache Lucene, Apache Solr and their
-      respective logos are trademarks of the Apache Software Foundation.  Please see the <a href="https://www.apache.org/foundation/marks/">Apache Trademark Policy</a>
-      for more information.
-    </p>
-  </div>
-</div>    </div> <!-- End #wrap -->
-  </body>
-</html>
\ No newline at end of file
diff --git a/output/core/features.html b/output/core/features.html
deleted file mode 100644
index 54578e87c..000000000
--- a/output/core/features.html
+++ /dev/null
@@ -1,279 +0,0 @@
-<!doctype html>
-<html>
-  <head>
-<!--
-    Licensed to the Apache Software Foundation (ASF) under one or more
-    contributor license agreements.  See the NOTICE file distributed with
-    this work for additional information regarding copyright ownership.
-    The ASF licenses this file to You under the Apache License, Version 2.0
-    (the "License"); you may not use this file except in compliance with
-    the License.  You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE- 2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
--->
-<link href="/theme/css/lucene/global.css?v=668d0966" rel="stylesheet" type="text/css">
-
-<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/>
-<meta name="Distribution" content="Global"/>
-<meta name="Robots" content="index,follow"/>
-
-<script type="text/javascript" src="/theme/javascript/lucene/prototype.js?v=668d0966"></script>
-<script type="text/javascript" src="/theme/javascript/lucene/effects.js?v=668d0966"></script>
-<script type="text/javascript" src="/theme/javascript/lucene/slides.js?v=668d0966"></script>
-<script src="https://www.apachecon.com/event-images/snippet.js"></script>
-<!-- Matomo -->
-<script>
-  var _paq = window._paq = window._paq || [];
-  /* tracker methods like "setCustomDimension" should be called before
-"trackPageView" */
-  _paq.push(["setDoNotTrack", true]);
-  _paq.push(["disableCookies"]);
-  _paq.push(['trackPageView']);
-  _paq.push(['enableLinkTracking']);
-  (function() {
-    var u="https://analytics.apache.org/";
-    _paq.push(['setTrackerUrl', u+'matomo.php']);
-    _paq.push(['setSiteId', '85']);
-    var d=document, g=d.createElement('script'),
-s=d.getElementsByTagName('script')[0];
-    g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
-  })();
-</script>
-<!-- End Matomo Code -->    <title>Apache Lucene - Lucene™ Features</title>
-<meta name="keywords"
-       content="apache, apache lucene, apache solr, solr, lucene
-       search, information retrieval, spell checking, faceting, inverted index,
-       open source"/>    <meta property="og:type" content="website" />
-    <meta property="og:url" content="https://lucene.apache.org/core/features.html"/>
-    <meta property="og:title" content="Lucene™ Features"/>
-    <meta property="og:description" content="Lucene offers powerful features through a simple API: Scalable, High-Performance Indexing over 800GB/hour on modern hardware small..."/>
-    <meta property="og:image" content="https://lucene.apache.org/theme/images/lucene/lucene_og_image.png?v=668d0966"/>
-    <meta property="og:image:secure_url" content="https://lucene.apache.org/theme/images/lucene/lucene_og_image.png?v=668d0966"/>
-<link rel="shortcut icon" type="image/png"
-                                                 href="/theme/images/lucene/lucene-favicon.png?v=668d0966"/><link href="/theme/css/lucene/core.css?v=668d0966" rel="stylesheet" type="text/css">
-  </head>
-  <body id="home">
-    <div id="wrap">
-      <div id="header">
-        <div id="logo" style="float:left">
-          <a href="/">
-            <img border="0" src="/theme/images/lucene/lucene_logo_green_300.png?v=668d0966" alt="Lucene Logo"/>
-          </a>
-        </div>
-<!-- TODO: Search disabled as it does not work, 2021-02-21
-<div id="search" style="float:right;zoom:1">
-  <form id="quick-search" method="GET" action="https://sematext.com/opensee/lucene" name="searchform">
-    <fieldset>
-      <input type="search" id="q" name="q" placeholder="Search with Apache Solr..." class="class1 class2 hint" accesskey="q">
-    </fieldset>
-  </form>
-</div>-->
-        <div id="nav">
-          <ul>
-<li><a href="/core/index.html">Core</a></li>
-<li><a href="/core/corenews.html">News</a></li>
-<li><a href="/core/downloads.html">Download</a></li>
-<li><a href="/core/discussion.html">Mailing Lists</a></li>
-<li><a href="/core/documentation.html">Documentation</a></li>
-<li><a href="/core/quickstart.html">Tutorials</a></li>
-<li><a href="https://github.com/apache/lucene/issues">Issue Tracker</a></li>
-<li><a class="last" href="/">Lucene TLP</a></li>
-          </ul>
-        </div>
-
-<div id="slides">
-  <div class="slideshow" id="mantleSlides">
-<div id="slide1">
-  <div class="callout">
-    Ultra-fast Search Library<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene sets the standard for search and indexing performance
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-lucene.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide2" style="display:none">
-  <div class="callout">
-    Proven search capabilities<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene is the de facto standard for search libraries
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Lucene Power" src="/theme/images/lucene/mantle-power.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide3" style="display:none">
-  <div class="callout">
-    Innovation and Maturity
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene has proven stability as well as a track record of innovation
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-innovation.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide4" style="display:none">
-  <div class="callout">
-    Apache 2.0 licensed
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene is distributed under a commercially friendly Apache Software license
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Software Foundation" src="/theme/images/lucene/mantle-asf.png?v=668d0966"/>
-  </div>
-</div>  </div>
-  <div class="controls">
-    <a class="next" id="next" title="Next" href="#">Next</a>
-    <a class="previous" id="previous" title="Previous" href="#">Previous</a>
-    <a class="start" id="start" title="Start" href="#" style="display: none; ">Start</a>
-    <a class="stop" id="stop" title="Stop" href="#">Stop</a>
-  </div>
-
-  <script type="text/javascript">
-    function StartSlides() {
-      new Slides('mantleSlides');
-    }
-document.observe('dom:loaded', StartSlides);
-  </script>
-</div> <!-- End #slides -->
-      </div> <!-- End #header -->
-
-      <div id="content-wrap" class="clearfix">
-        <div id="main">
-<div>
-  <h1 class="title">Lucene™ Features</h1>
-  <p>Lucene offers powerful features through a simple API:</p>
-<h2 id="scalable-high-performance-indexing">Scalable, High-Performance Indexing</h2>
-<ul>
-<li>over <a href="https://benchmarks.mikemccandless.com/indexing.html">800GB/hour on modern hardware</a></li>
-<li>small RAM requirements -- only 1MB heap</li>
-<li>incremental indexing as fast as batch indexing</li>
-<li>index size roughly 20-30% the size of text indexed</li>
-</ul>
-<h2 id="powerful-accurate-and-efficient-search-algorithms">Powerful, Accurate and Efficient Search Algorithms</h2>
-<ul>
-<li>ranked searching -- best results returned first</li>
-<li>many powerful query types: phrase queries, wildcard queries, proximity queries, range queries and more</li>
-<li>fielded searching (e.g. title, author, contents)</li>
-<li>nearest-neighbor search for high-dimensionality vectors</li>
-<li>sorting by any field</li>
-<li>multiple-index searching with merged results</li>
-<li>allows simultaneous update and searching</li>
-<li>flexible faceting, highlighting, joins and result grouping</li>
-<li>fast, memory-efficient and typo-tolerant suggesters</li>
-<li>pluggable ranking models, including the <a href="http://en.wikipedia.org/wiki/Vector_Space_Model">Vector Space Model</a> and <a href="http://en.wikipedia.org/wiki/Okapi_BM25">Okapi BM25</a></li>
-<li>configurable storage engine (codecs)</li>
-</ul>
-<p>Search performance of Apache Lucene is tracked in muliple places. Check out</p>
-<ul>
-<li><a href="https://benchmarks.mikemccandless.com/">Mike McCandless' nightly benchmarks for Lucene</a> for an historical view of Lucene's query performance, going back to 2011 for some queries</li>
-<li><a href="https://tantivy-search.github.io/bench/">Search Benchmark, the Game</a> for a comparison of Lucene with other search engines</li>
-</ul>
-<h2 id="cross-platform-solution">Cross-Platform Solution</h2>
-<ul>
-<li>Available as Open Source software under the <a href="https://www.apache.org/licenses/LICENSE-2.0.html">Apache License</a> which lets you use Lucene in both commercial and Open Source programs</li>
-<li>100%-pure Java</li>
-<li>Implementations in <a href="https://cwiki.apache.org/confluence/display/lucene/LuceneImplementations">other programming languages available</a></li>
-</ul>
-<h2 id="utility-tools">Utility tools</h2>
-<ul>
-<li>integrated desktop GUI tool (Luke): a utility for browsing, searching and maintaining indexes and documents. It can be started with "bin/luke.{sh|cmd}".</li>
-</ul>
-</div>
-        </div>
-        <div id="sidebar">
-<div class="button-wrapper">
-  <div class="button-green">
-    <a href="/core/downloads.html">Download</a>
-    <div class="flap top">Click to</div>
-    <div class="flap bottom">Apache Lucene 10.4.0</div>
-  </div>
-  <div class="download-desc">Apache Lucene 10.4.0</div>
-</div>
-
-<h1 id="resources">Resources</h1>
-<ul>
-  <li><a href="/core/discussion.html">Mailing Lists</a></li>
-  <li><a href="/core/developer.html">Developer</a></li>
-  <li><a href="/core/features.html">Features</a></li>
-  <li><a href="/core/downloads.html">Releases</a></li>
-  <li><a href="/core/systemreqs.html">System Requirements</a></li>
-</ul>
-
-<h1 id="release-docs">Release Docs</h1>
-<ul>
-  <li><a href="/core/10_4_0/index.html">10.4.0</a></li>
-</ul>
-
-<h1 id="about">About</h1>
-<ul>
-  <li><a href="https://www.apache.org/licenses/">License</a></li>
-  <li><a href="/whoweare.html">Who We are</a></li>
-</ul>
-
-<h1 id="events">Events</h1>
-<ul>
-  <a class="acevent" data-format="square" data-mode="light" data-width="160" data-style="border: 1px solid lightgrey"></a>
-</ul>
-
-<h1 id="asf-links">ASF links</h1>
-<ul>
-  <li><a href="https://www.apache.org">Apache Software Foundation</a></li>
-  <li><a href="https://www.apache.org/foundation/thanks.html">Thanks</a></li>
-  <li><a href="https://www.apache.org/foundation/sponsorship.html">Become a Sponsor</a></li>
-  <li><a href="https://www.apache.org/security/">Security</a></li>
-</ul>
-
-<h1 id="related-projects">Related Projects</h1>
-<ul>
-  <li><a href="https://solr.apache.org">Apache Solr</a></li>
-  <li><a href="http://hadoop.apache.org">Apache Hadoop</a></li>
-  <li><a href="http://manifoldcf.apache.org/">Apache ManifoldCF</a></li>
-  <li><a href="http://lucenenet.apache.org/">Apache Lucene.Net</a></li>
-  <li><a href="http://mahout.apache.org">Apache Mahout</a></li>
-  <li><a href="http://nutch.apache.org">Apache Nutch</a></li>
-  <li><a href="http://opennlp.apache.org/">Apache OpenNLP</a></li>
-  <li><a href="http://tika.apache.org">Apache Tika</a></li>
-  <li><a href="http://zookeeper.apache.org">Apache Zookeeper</a></li>
-</ul>
-
-<div class="status">
-  <!-- No SVN anymore; TODO: how to do Git? INFRA does not have a plugin!
-    <div id="svn"></div>
-  -->
-</div>        </div>
-      </div> <!-- End #content-wrap -->
-
-<div id="footer">
-  <div class="copyright">
-    <p>
-      Copyright &copy; 2011-2026 The Apache Software Foundation, Licensed under
-      the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.  <a href="https://privacy.apache.org/policies/privacy-policy-public.html">Privacy Policy</a>      <br/>
-      Apache and the Apache logo are trademarks of The Apache Software Foundation.  Apache Lucene, Apache Solr and their
-      respective logos are trademarks of the Apache Software Foundation.  Please see the <a href="https://www.apache.org/foundation/marks/">Apache Trademark Policy</a>
-      for more information.
-    </p>
-  </div>
-</div>    </div> <!-- End #wrap -->
-  </body>
-</html>
\ No newline at end of file
diff --git a/output/core/index.html b/output/core/index.html
deleted file mode 100644
index 568ab0694..000000000
--- a/output/core/index.html
+++ /dev/null
@@ -1,285 +0,0 @@
-<!doctype html>
-<html>
-  <head>
-<!--
-    Licensed to the Apache Software Foundation (ASF) under one or more
-    contributor license agreements.  See the NOTICE file distributed with
-    this work for additional information regarding copyright ownership.
-    The ASF licenses this file to You under the Apache License, Version 2.0
-    (the "License"); you may not use this file except in compliance with
-    the License.  You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE- 2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
--->
-<link href="/theme/css/lucene/global.css?v=668d0966" rel="stylesheet" type="text/css">
-
-<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/>
-<meta name="Distribution" content="Global"/>
-<meta name="Robots" content="index,follow"/>
-
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-<script type="text/javascript" src="/theme/javascript/lucene/effects.js?v=668d0966"></script>
-<script type="text/javascript" src="/theme/javascript/lucene/slides.js?v=668d0966"></script>
-<script src="https://www.apachecon.com/event-images/snippet.js"></script>
-<!-- Matomo -->
-<script>
-  var _paq = window._paq = window._paq || [];
-  /* tracker methods like "setCustomDimension" should be called before
-"trackPageView" */
-  _paq.push(["setDoNotTrack", true]);
-  _paq.push(["disableCookies"]);
-  _paq.push(['trackPageView']);
-  _paq.push(['enableLinkTracking']);
-  (function() {
-    var u="https://analytics.apache.org/";
-    _paq.push(['setTrackerUrl', u+'matomo.php']);
-    _paq.push(['setSiteId', '85']);
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-s=d.getElementsByTagName('script')[0];
-    g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
-  })();
-</script>
-<!-- End Matomo Code -->    <title>Apache Lucene - Apache Lucene Core</title>
-<meta name="keywords"
-       content="apache, apache lucene, apache solr, solr, lucene
-       search, information retrieval, spell checking, faceting, inverted index,
-       open source"/>    <meta property="og:type" content="website" />
-    <meta property="og:url" content="https://lucene.apache.org/core/index.html"/>
-    <meta property="og:title" content="Apache Lucene Core"/>
-    <meta property="og:description" content="Apache Lucene™ is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for..."/>
-    <meta property="og:image" content="https://lucene.apache.org/theme/images/lucene/lucene_og_image.png?v=668d0966"/>
-    <meta property="og:image:secure_url" content="https://lucene.apache.org/theme/images/lucene/lucene_og_image.png?v=668d0966"/>
-<link rel="shortcut icon" type="image/png"
-                                                 href="/theme/images/lucene/lucene-favicon.png?v=668d0966"/><link href="/theme/css/lucene/core.css?v=668d0966" rel="stylesheet" type="text/css">
-  </head>
-  <body id="home">
-    <div id="wrap">
-      <div id="header">
-        <div id="logo" style="float:left">
-          <a href="/">
-            <img border="0" src="/theme/images/lucene/lucene_logo_green_300.png?v=668d0966" alt="Lucene Logo"/>
-          </a>
-        </div>
-<!-- TODO: Search disabled as it does not work, 2021-02-21
-<div id="search" style="float:right;zoom:1">
-  <form id="quick-search" method="GET" action="https://sematext.com/opensee/lucene" name="searchform">
-    <fieldset>
-      <input type="search" id="q" name="q" placeholder="Search with Apache Solr..." class="class1 class2 hint" accesskey="q">
-    </fieldset>
-  </form>
-</div>-->
-        <div id="nav">
-          <ul>
-<li><a href="/core/index.html">Core</a></li>
-<li><a href="/core/corenews.html">News</a></li>
-<li><a href="/core/downloads.html">Download</a></li>
-<li><a href="/core/discussion.html">Mailing Lists</a></li>
-<li><a href="/core/documentation.html">Documentation</a></li>
-<li><a href="/core/quickstart.html">Tutorials</a></li>
-<li><a href="https://github.com/apache/lucene/issues">Issue Tracker</a></li>
-<li><a class="last" href="/">Lucene TLP</a></li>
-          </ul>
-        </div>
-
-<div id="slides">
-  <div class="slideshow" id="mantleSlides">
-<div id="slide1">
-  <div class="callout">
-    Ultra-fast Search Library<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene sets the standard for search and indexing performance
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-lucene.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide2" style="display:none">
-  <div class="callout">
-    Proven search capabilities<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene is the de facto standard for search libraries
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Lucene Power" src="/theme/images/lucene/mantle-power.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide3" style="display:none">
-  <div class="callout">
-    Innovation and Maturity
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene has proven stability as well as a track record of innovation
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-innovation.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide4" style="display:none">
-  <div class="callout">
-    Apache 2.0 licensed
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene is distributed under a commercially friendly Apache Software license
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Software Foundation" src="/theme/images/lucene/mantle-asf.png?v=668d0966"/>
-  </div>
-</div>  </div>
-  <div class="controls">
-    <a class="next" id="next" title="Next" href="#">Next</a>
-    <a class="previous" id="previous" title="Previous" href="#">Previous</a>
-    <a class="start" id="start" title="Start" href="#" style="display: none; ">Start</a>
-    <a class="stop" id="stop" title="Stop" href="#">Stop</a>
-  </div>
-
-  <script type="text/javascript">
-    function StartSlides() {
-      new Slides('mantleSlides');
-    }
-document.observe('dom:loaded', StartSlides);
-  </script>
-</div> <!-- End #slides -->
-      </div> <!-- End #header -->
-
-      <div id="content-wrap" class="clearfix">
-        <div id="main">
-<div>
-  <h1 class="title">Apache Lucene Core</h1>
-  <p>Apache Lucene™ is a
-high-performance, full-featured search engine library written entirely in Java.
-It is a technology suitable for nearly any application that requires structured
-search, full-text search, faceting, nearest-neighbor search across
-high-dimensionality vectors, spell correction or query suggestions.</p>
-<p>Apache Lucene is an open source project available for free download. Please use the
-links on the right to access Lucene.</p>
-<h1 id="lucenetm-features">Lucene™ Features</h1>
-<p>Lucene offers powerful features through a simple API:</p>
-<h2 id="scalable-high-performance-indexing">Scalable, High-Performance Indexing</h2>
-<ul>
-<li>over <a href="https://benchmarks.mikemccandless.com/indexing.html">800GB/hour on modern hardware</a></li>
-<li>small RAM requirements -- only 1MB heap</li>
-<li>incremental indexing as fast as batch indexing</li>
-<li>index size roughly 20-30% the size of text indexed</li>
-</ul>
-<h2 id="powerful-accurate-and-efficient-search-algorithms">Powerful, Accurate and Efficient Search Algorithms</h2>
-<ul>
-<li>ranked searching -- best results returned first</li>
-<li>many powerful query types: phrase queries, wildcard queries, proximity
-  queries, range queries and more</li>
-<li>fielded searching (e.g. title, author, contents)</li>
-<li>nearest-neighbor search for high-dimensionality vectors</li>
-<li>sorting by any field</li>
-<li>multiple-index searching with merged results</li>
-<li>allows simultaneous update and searching</li>
-<li>flexible faceting, highlighting, joins and result grouping</li>
-<li>fast, memory-efficient and typo-tolerant suggesters</li>
-<li>pluggable ranking models, including the <a href="http://en.wikipedia.org/wiki/Vector_Space_Model">Vector Space Model</a> and <a href="http://en.wikipedia.org/wiki/Okapi_BM25">Okapi BM25</a></li>
-<li>configurable storage engine (codecs)</li>
-</ul>
-<p>Search performance of Apache Lucene is tracked in muliple places. Check out</p>
-<ul>
-<li><a href="https://benchmarks.mikemccandless.com/">Mike McCandless' nightly benchmarks for Lucene</a> for an historical view of Lucene's query performance, going back to 2011 for some queries</li>
-<li><a href="https://tantivy-search.github.io/bench/">Search Benchmark, the Game</a> for a comparison of Lucene with other search engines</li>
-</ul>
-<h2 id="cross-platform-solution">Cross-Platform Solution</h2>
-<ul>
-<li>Available as Open Source software under the <a href="https://www.apache.org/licenses/LICENSE-2.0.html">Apache License</a> which lets you use
-  Lucene in both commercial and Open Source programs</li>
-<li>100%-pure Java</li>
-<li>Implementations <a href="https://cwiki.apache.org/confluence/display/lucene/LuceneImplementations">in other programming languages available</a></li>
-</ul>
-</div>
-        </div>
-        <div id="sidebar">
-<div class="button-wrapper">
-  <div class="button-green">
-    <a href="/core/downloads.html">Download</a>
-    <div class="flap top">Click to</div>
-    <div class="flap bottom">Apache Lucene 10.4.0</div>
-  </div>
-  <div class="download-desc">Apache Lucene 10.4.0</div>
-</div>
-
-<h1 id="resources">Resources</h1>
-<ul>
-  <li><a href="/core/discussion.html">Mailing Lists</a></li>
-  <li><a href="/core/developer.html">Developer</a></li>
-  <li><a href="/core/features.html">Features</a></li>
-  <li><a href="/core/downloads.html">Releases</a></li>
-  <li><a href="/core/systemreqs.html">System Requirements</a></li>
-</ul>
-
-<h1 id="release-docs">Release Docs</h1>
-<ul>
-  <li><a href="/core/10_4_0/index.html">10.4.0</a></li>
-</ul>
-
-<h1 id="about">About</h1>
-<ul>
-  <li><a href="https://www.apache.org/licenses/">License</a></li>
-  <li><a href="/whoweare.html">Who We are</a></li>
-</ul>
-
-<h1 id="events">Events</h1>
-<ul>
-  <a class="acevent" data-format="square" data-mode="light" data-width="160" data-style="border: 1px solid lightgrey"></a>
-</ul>
-
-<h1 id="asf-links">ASF links</h1>
-<ul>
-  <li><a href="https://www.apache.org">Apache Software Foundation</a></li>
-  <li><a href="https://www.apache.org/foundation/thanks.html">Thanks</a></li>
-  <li><a href="https://www.apache.org/foundation/sponsorship.html">Become a Sponsor</a></li>
-  <li><a href="https://www.apache.org/security/">Security</a></li>
-</ul>
-
-<h1 id="related-projects">Related Projects</h1>
-<ul>
-  <li><a href="https://solr.apache.org">Apache Solr</a></li>
-  <li><a href="http://hadoop.apache.org">Apache Hadoop</a></li>
-  <li><a href="http://manifoldcf.apache.org/">Apache ManifoldCF</a></li>
-  <li><a href="http://lucenenet.apache.org/">Apache Lucene.Net</a></li>
-  <li><a href="http://mahout.apache.org">Apache Mahout</a></li>
-  <li><a href="http://nutch.apache.org">Apache Nutch</a></li>
-  <li><a href="http://opennlp.apache.org/">Apache OpenNLP</a></li>
-  <li><a href="http://tika.apache.org">Apache Tika</a></li>
-  <li><a href="http://zookeeper.apache.org">Apache Zookeeper</a></li>
-</ul>
-
-<div class="status">
-  <!-- No SVN anymore; TODO: how to do Git? INFRA does not have a plugin!
-    <div id="svn"></div>
-  -->
-</div>        </div>
-      </div> <!-- End #content-wrap -->
-
-<div id="footer">
-  <div class="copyright">
-    <p>
-      Copyright &copy; 2011-2026 The Apache Software Foundation, Licensed under
-      the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.  <a href="https://privacy.apache.org/policies/privacy-policy-public.html">Privacy Policy</a>      <br/>
-      Apache and the Apache logo are trademarks of The Apache Software Foundation.  Apache Lucene, Apache Solr and their
-      respective logos are trademarks of the Apache Software Foundation.  Please see the <a href="https://www.apache.org/foundation/marks/">Apache Trademark Policy</a>
-      for more information.
-    </p>
-  </div>
-</div>    </div> <!-- End #wrap -->
-  </body>
-</html>
\ No newline at end of file
diff --git a/output/core/quickstart.html b/output/core/quickstart.html
deleted file mode 100644
index 74cb34acd..000000000
--- a/output/core/quickstart.html
+++ /dev/null
@@ -1,250 +0,0 @@
-<!doctype html>
-<html>
-  <head>
-<!--
-    Licensed to the Apache Software Foundation (ASF) under one or more
-    contributor license agreements.  See the NOTICE file distributed with
-    this work for additional information regarding copyright ownership.
-    The ASF licenses this file to You under the Apache License, Version 2.0
-    (the "License"); you may not use this file except in compliance with
-    the License.  You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE- 2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
--->
-<link href="/theme/css/lucene/global.css?v=668d0966" rel="stylesheet" type="text/css">
-
-<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/>
-<meta name="Distribution" content="Global"/>
-<meta name="Robots" content="index,follow"/>
-
-<script type="text/javascript" src="/theme/javascript/lucene/prototype.js?v=668d0966"></script>
-<script type="text/javascript" src="/theme/javascript/lucene/effects.js?v=668d0966"></script>
-<script type="text/javascript" src="/theme/javascript/lucene/slides.js?v=668d0966"></script>
-<script src="https://www.apachecon.com/event-images/snippet.js"></script>
-<!-- Matomo -->
-<script>
-  var _paq = window._paq = window._paq || [];
-  /* tracker methods like "setCustomDimension" should be called before
-"trackPageView" */
-  _paq.push(["setDoNotTrack", true]);
-  _paq.push(["disableCookies"]);
-  _paq.push(['trackPageView']);
-  _paq.push(['enableLinkTracking']);
-  (function() {
-    var u="https://analytics.apache.org/";
-    _paq.push(['setTrackerUrl', u+'matomo.php']);
-    _paq.push(['setSiteId', '85']);
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-s=d.getElementsByTagName('script')[0];
-    g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
-  })();
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-<!-- End Matomo Code -->    <title>Apache Lucene - Lucene™ Tutorials</title>
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-    <meta property="og:url" content="https://lucene.apache.org/core/quickstart.html"/>
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-<!-- TODO: Search disabled as it does not work, 2021-02-21
-<div id="search" style="float:right;zoom:1">
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-        </div>
-
-<div id="slides">
-  <div class="slideshow" id="mantleSlides">
-<div id="slide1">
-  <div class="callout">
-    Ultra-fast Search Library<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene sets the standard for search and indexing performance
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-lucene.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide2" style="display:none">
-  <div class="callout">
-    Proven search capabilities<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene is the de facto standard for search libraries
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Lucene Power" src="/theme/images/lucene/mantle-power.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide3" style="display:none">
-  <div class="callout">
-    Innovation and Maturity
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene has proven stability as well as a track record of innovation
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-innovation.png?v=668d0966"/>
-  </div>
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-  <div class="callout">
-    Apache 2.0 licensed
-  </div>
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-      Apache Lucene is distributed under a commercially friendly Apache Software license
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Software Foundation" src="/theme/images/lucene/mantle-asf.png?v=668d0966"/>
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-  <h1 class="title">Lucene™ Tutorials</h1>
-  <p>A copy of the demo for each version of Lucene is included in the documentation for that release.</p>
-</div>
-
-  <p>The most recent versions can also be found online:</p>
-  <ul>
-    <li><a href="/core/10_4_0/demo/overview-summary.html#overview_description">Lucene 10.4.0 Demo</a></li>
-  </ul>
-</div>
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-    <div class="flap bottom">Apache Lucene 10.4.0</div>
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-</ul>
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-<ul>
-  <li><a href="/core/10_4_0/index.html">10.4.0</a></li>
-</ul>
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-<ul>
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-<ul>
-  <li><a href="https://solr.apache.org">Apache Solr</a></li>
-  <li><a href="http://hadoop.apache.org">Apache Hadoop</a></li>
-  <li><a href="http://manifoldcf.apache.org/">Apache ManifoldCF</a></li>
-  <li><a href="http://lucenenet.apache.org/">Apache Lucene.Net</a></li>
-  <li><a href="http://mahout.apache.org">Apache Mahout</a></li>
-  <li><a href="http://nutch.apache.org">Apache Nutch</a></li>
-  <li><a href="http://opennlp.apache.org/">Apache OpenNLP</a></li>
-  <li><a href="http://tika.apache.org">Apache Tika</a></li>
-  <li><a href="http://zookeeper.apache.org">Apache Zookeeper</a></li>
-</ul>
-
-<div class="status">
-  <!-- No SVN anymore; TODO: how to do Git? INFRA does not have a plugin!
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-      Apache and the Apache logo are trademarks of The Apache Software Foundation.  Apache Lucene, Apache Solr and their
-      respective logos are trademarks of the Apache Software Foundation.  Please see the <a href="https://www.apache.org/foundation/marks/">Apache Trademark Policy</a>
-      for more information.
-    </p>
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\ No newline at end of file
diff --git a/output/core/systemreqs.html b/output/core/systemreqs.html
deleted file mode 100644
index 6c5ddf9f6..000000000
--- a/output/core/systemreqs.html
+++ /dev/null
@@ -1,251 +0,0 @@
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-<html>
-  <head>
-<!--
-    Licensed to the Apache Software Foundation (ASF) under one or more
-    contributor license agreements.  See the NOTICE file distributed with
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-    The ASF licenses this file to You under the Apache License, Version 2.0
-    (the "License"); you may not use this file except in compliance with
-    the License.  You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE- 2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
--->
-<link href="/theme/css/lucene/global.css?v=668d0966" rel="stylesheet" type="text/css">
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-<script type="text/javascript" src="/theme/javascript/lucene/slides.js?v=668d0966"></script>
-<script src="https://www.apachecon.com/event-images/snippet.js"></script>
-<!-- Matomo -->
-<script>
-  var _paq = window._paq = window._paq || [];
-  /* tracker methods like "setCustomDimension" should be called before
-"trackPageView" */
-  _paq.push(["setDoNotTrack", true]);
-  _paq.push(["disableCookies"]);
-  _paq.push(['trackPageView']);
-  _paq.push(['enableLinkTracking']);
-  (function() {
-    var u="https://analytics.apache.org/";
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-<!-- End Matomo Code -->    <title>Apache Lucene - Lucene™ System Requirements</title>
-<meta name="keywords"
-       content="apache, apache lucene, apache solr, solr, lucene
-       search, information retrieval, spell checking, faceting, inverted index,
-       open source"/>    <meta property="og:type" content="website" />
-    <meta property="og:url" content="https://lucene.apache.org/core/systemreqs.html"/>
-    <meta property="og:title" content="Lucene™ System Requirements"/>
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-<link rel="shortcut icon" type="image/png"
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-  </head>
-  <body id="home">
-    <div id="wrap">
-      <div id="header">
-        <div id="logo" style="float:left">
-          <a href="/">
-            <img border="0" src="/theme/images/lucene/lucene_logo_green_300.png?v=668d0966" alt="Lucene Logo"/>
-          </a>
-        </div>
-<!-- TODO: Search disabled as it does not work, 2021-02-21
-<div id="search" style="float:right;zoom:1">
-  <form id="quick-search" method="GET" action="https://sematext.com/opensee/lucene" name="searchform">
-    <fieldset>
-      <input type="search" id="q" name="q" placeholder="Search with Apache Solr..." class="class1 class2 hint" accesskey="q">
-    </fieldset>
-  </form>
-</div>-->
-        <div id="nav">
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-<li><a href="/core/quickstart.html">Tutorials</a></li>
-<li><a href="https://github.com/apache/lucene/issues">Issue Tracker</a></li>
-<li><a class="last" href="/">Lucene TLP</a></li>
-          </ul>
-        </div>
-
-<div id="slides">
-  <div class="slideshow" id="mantleSlides">
-<div id="slide1">
-  <div class="callout">
-    Ultra-fast Search Library<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene sets the standard for search and indexing performance
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-lucene.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide2" style="display:none">
-  <div class="callout">
-    Proven search capabilities<br/>
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene is the de facto standard for search libraries
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Lucene Power" src="/theme/images/lucene/mantle-power.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide3" style="display:none">
-  <div class="callout">
-    Innovation and Maturity
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Lucene has proven stability as well as a track record of innovation
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Lucene" src="/theme/images/lucene/core/mantle-innovation.png?v=668d0966"/>
-  </div>
-</div>
-<div id="slide4" style="display:none">
-  <div class="callout">
-    Apache 2.0 licensed
-  </div>
-  <div class="descwrapper">
-    <div class="description">
-      Apache Lucene is distributed under a commercially friendly Apache Software license
-    </div>
-  </div>
-  <div class="mantle">
-    <img alt="Apache Software Foundation" src="/theme/images/lucene/mantle-asf.png?v=668d0966"/>
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-
-  <script type="text/javascript">
-    function StartSlides() {
-      new Slides('mantleSlides');
-    }
-document.observe('dom:loaded', StartSlides);
-  </script>
-</div> <!-- End #slides -->
-      </div> <!-- End #header -->
-
-      <div id="content-wrap" class="clearfix">
-        <div id="main">
-<div>
-  <div>
-  <h1 class="title">Lucene™ System Requirements</h1>
-  
-</div>
-
-  <p>The system requirements of the various Lucene releases are listed on their documentation pages:</p>
-  <ul>
-    <li><a href="/core/10_4_0/SYSTEM_REQUIREMENTS.html">10.4.0</a></li>
-    <li><a href="/core/9_12_3/SYSTEM_REQUIREMENTS.html">9.12.3</a></li>
-  </ul>
-</div>
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-  <div class="button-green">
-    <a href="/core/downloads.html">Download</a>
-    <div class="flap top">Click to</div>
-    <div class="flap bottom">Apache Lucene 10.4.0</div>
-  </div>
-  <div class="download-desc">Apache Lucene 10.4.0</div>
-</div>
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-  <li><a href="/core/downloads.html">Releases</a></li>
-  <li><a href="/core/systemreqs.html">System Requirements</a></li>
-</ul>
-
-<h1 id="release-docs">Release Docs</h1>
-<ul>
-  <li><a href="/core/10_4_0/index.html">10.4.0</a></li>
-</ul>
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-<ul>
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-</ul>
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-<h1 id="asf-links">ASF links</h1>
-<ul>
-  <li><a href="https://www.apache.org">Apache Software Foundation</a></li>
-  <li><a href="https://www.apache.org/foundation/thanks.html">Thanks</a></li>
-  <li><a href="https://www.apache.org/foundation/sponsorship.html">Become a Sponsor</a></li>
-  <li><a href="https://www.apache.org/security/">Security</a></li>
-</ul>
-
-<h1 id="related-projects">Related Projects</h1>
-<ul>
-  <li><a href="https://solr.apache.org">Apache Solr</a></li>
-  <li><a href="http://hadoop.apache.org">Apache Hadoop</a></li>
-  <li><a href="http://manifoldcf.apache.org/">Apache ManifoldCF</a></li>
-  <li><a href="http://lucenenet.apache.org/">Apache Lucene.Net</a></li>
-  <li><a href="http://mahout.apache.org">Apache Mahout</a></li>
-  <li><a href="http://nutch.apache.org">Apache Nutch</a></li>
-  <li><a href="http://opennlp.apache.org/">Apache OpenNLP</a></li>
-  <li><a href="http://tika.apache.org">Apache Tika</a></li>
-  <li><a href="http://zookeeper.apache.org">Apache Zookeeper</a></li>
-</ul>
-
-<div class="status">
-  <!-- No SVN anymore; TODO: how to do Git? INFRA does not have a plugin!
-    <div id="svn"></div>
-  -->
-</div>        </div>
-      </div> <!-- End #content-wrap -->
-
-<div id="footer">
-  <div class="copyright">
-    <p>
-      Copyright &copy; 2011-2026 The Apache Software Foundation, Licensed under
-      the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.  <a href="https://privacy.apache.org/policies/privacy-policy-public.html">Privacy Policy</a>      <br/>
-      Apache and the Apache logo are trademarks of The Apache Software Foundation.  Apache Lucene, Apache Solr and their
-      respective logos are trademarks of the Apache Software Foundation.  Please see the <a href="https://www.apache.org/foundation/marks/">Apache Trademark Policy</a>
-      for more information.
-    </p>
-  </div>
-</div>    </div> <!-- End #wrap -->
-  </body>
-</html>
\ No newline at end of file
diff --git a/output/feeds/all.atom.xml b/output/feeds/all.atom.xml
index 491be770e..fab7f8a8d 100644
--- a/output/feeds/all.atom.xml
+++ b/output/feeds/all.atom.xml
@@ -1,2751 +1,2 @@
 <?xml version="1.0" encoding="utf-8"?>
-<feed xmlns="http://www.w3.org/2005/Atom"><title>Apache Lucene</title><link href="/" rel="alternate"></link><link href="/feeds/all.atom.xml" rel="self"></link><id>/</id><updated>2026-02-25T00:00:00+00:00</updated><subtitle></subtitle><subtitle></subtitle><entry><title>Apache Lucene™ 10.4.0 available</title><link href="/" rel="alternate"></link><published>2026-02-25T00:00:00+00:00</published><updated>2026-02-25T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.4.0. &lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1040-release-highlights"&gt;Lucene 10.4.0 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;Lucene 10.4 brings some significant performance improvements and a brand new knn vectors format.&lt;/p&gt;
-&lt;p&gt;Many lucene queries should see a performance improvement of 10-15%, some might even see a 35% improvement! This is due to increasing the block size of the terms postings and better utilization of SIMD optimized code.&lt;/p&gt;
-&lt;p&gt;Additionally, there is a new scalar quantized format for dense vectors and knn search. Lucene104ScalarQuantizedVectorsFormat and Lucene104HnswScalarQuantizedVectorsFormat allow custom quantized bits for 1, 2, 4, 7, and 8. The recall has improved significantly and for many vector types, quantizing to 2 bits will achieve even better recall than older formats at the 4 bit level. This improves latency while increasing recall for various vector work loads.&lt;/p&gt;
-&lt;p&gt;&lt;strong&gt;New Features&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Provides new and improved scalar quantized formats Lucene104ScalarQuantizedVectorsFormat  and Lucene104HnswScalarQuantizedVectorsFormat  for dense vectors. Allowing for quantizing to 1, 2, 4, 7, and 8 bits. For reference, the new 2 bit quantization technique provides better recall and speed than the old 4 bit.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;&lt;strong&gt;API Changes&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;New bulk operation APIs for dense vectors and numeric doc values&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;&lt;strong&gt;Improvements and Optimizations&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;HNSW graphs can now delay being built for tiny segments and will prevent completely rebuilding the graphs when handling deletes&lt;/li&gt;
-&lt;li&gt;Handling of deletes in general got much faster and cheaper, improving storage costs significantly when there are very few deleted docs&lt;/li&gt;
-&lt;li&gt;Block size increased for terms postings, significantly improving query latency for many types of queries&lt;/li&gt;
-&lt;li&gt;Use a coarser-grained competitive iterator with lower construction costs for numeric sorts against fields with DocValuesSkippers.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;&lt;strong&gt;Runtime Behavior Changes and Bug Fixes&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix tessellator failure by preferring the shared vertex that is the leftmost vertex of the hole&lt;/li&gt;
-&lt;li&gt;The "reverse" field of SortField is now final. If you have subclassed SortField, you should set "reverse" in the super constructor.&lt;/li&gt;
-&lt;li&gt;Align float vectors on disk to 64 bytes, for optimal performance on Arm Neoverse machines&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/10_4_0/changes/Changes.html"&gt;https://lucene.apache.org/core/10_4_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.3.2 available</title><link href="/" rel="alternate"></link><published>2025-11-17T00:00:00+00:00</published><updated>2025-11-17T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-11-17:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.3.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1032-release-highlights"&gt;Lucene 10.3.2 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;&lt;strong&gt; Bug fixes &lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix potential EOF introduced by optimized filter iterations in MaxScoreBulkScorer.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/10_3_2/changes/Changes.html"&gt;https://lucene.apache.org/core/10_3_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.3.1 available</title><link href="/" rel="alternate"></link><published>2025-10-06T00:00:00+00:00</published><updated>2025-10-06T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-10-06:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.3.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1031-release-highlights"&gt;Lucene 10.3.1 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;&lt;strong&gt; Bug Fixes &lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix the Impact returned from Lucene103PostingsReader when frequencies are not indexed. &lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/10_3_1/changes/Changes.html"&gt;https://lucene.apache.org/core/10_3_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.12.3 available</title><link href="/" rel="alternate"></link><published>2025-09-27T00:00:00+00:00</published><updated>2025-09-27T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-09-27:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.3.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This patch release contains bug fixes that are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9123-release-highlights"&gt;Lucene 9.12.3 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;&lt;strong&gt;Bug fixes&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Support for JDK24+&lt;/li&gt;
-&lt;li&gt;Reduce sharedArenaMaxPermits from 1024 to 64&lt;/li&gt;
-&lt;li&gt;Use READONCE to read segment infos&lt;/li&gt;
-&lt;li&gt;Fix rare spin-loop in RefCountedSharedArena&lt;/li&gt;
-&lt;li&gt;Ensure vector queries handle advanceShallow correctly&lt;/li&gt;
-&lt;li&gt;Fix failure due to hole bridge being coplanar with polygon edge&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Further details of changes are available in the change log available at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_12_3/changes/Changes.html"&gt;https://lucene.apache.org/core/9_12_3/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.3.0 available</title><link href="/" rel="alternate"></link><published>2025-09-13T00:00:00+00:00</published><updated>2025-09-13T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-09-13:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.3.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1030-release-highlights"&gt;Lucene 10.3.0 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;Lucene 10.3 brings major performance improvements.&lt;/p&gt;
-&lt;p&gt;Lexical search is now vectorized to better take advantage of SIMD instructions, more efficient memory access patterns, CPU pipelining and amortize the cost of virtual function calls. Lucene's nightly benchmarks report a 40% speedup compared with Lucene 10.2 when computing top-100 hits by score on disjunctive and conjunctive queries.&lt;/p&gt;
-&lt;p&gt;Vector search now better parallelizes fetching vectors into the CPU cache. Lucene's nightly benchmarks report a 15%-20% speedup compared with Lucene 10.2.&lt;/p&gt;
-&lt;p&gt;The terms dictionary performs about 30% faster than in Lucene 10.2 on primary-key lookups according to Lucene's nightly benchmarks. This should help speed up workloads that rely on terms dictionary lookup performance including primary-key lookups, indexing operations that specify an ID and TermInSet queries.&lt;/p&gt;
-&lt;p&gt;&lt;strong&gt;New Features&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Supports reranking with late interaction model multi-vectors, full precision vector similarity scores, or any provided DoubleValuesSource, enabling improved ranking of search results.&lt;/li&gt;
-&lt;li&gt;Adds a MultiIndexMergeScheduler – a multi-tenant wrapper that allows sharing a common merge scheduler across multiple instances.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;&lt;strong&gt;API Changes&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Adds API to fetch the size of off-heap memory required by a KNN field. This size can be used to help determine the memory requirements for optimal search performance, which can be greatly affected by page faults when not enough memory is available.&lt;/li&gt;
-&lt;li&gt;RandomVectorScorer now supports a bulk scoring interface.&lt;/li&gt;
-&lt;li&gt;LeafReader#searchNearestVectors now accepts an AcceptDocs instance instead of a Bits instance to identify document IDs to filter.&lt;/li&gt;
-&lt;li&gt;Collectors can now take advantage of pre-aggregated data to speed up faceting using LeafCollector#collectRange.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;&lt;strong&gt;Improvements and Optimizations&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Adds optimistic knn search to vector queries. Optimistic knn search addresses a major issue where we return inconsistent results due to race conditions in the shared queue previously used over multi-segment search.&lt;/li&gt;
-&lt;li&gt;Faster vector search on HNSW graphs through GroupVarInt encoding.&lt;/li&gt;
-&lt;li&gt;Searcher managers now support 'Adaptive Refresh', enabling users to control the commit points it refreshes on. This helps with graceful handling of large replication payloads in segment-replicated systems.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;&lt;strong&gt;Runtime Behavior Changes and Bug Fixes&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;The default ReadAdvice has been changed from RANDOM to NORMAL. MMapDirectory will no longer set any specific read advice out-of-the-box.&lt;/li&gt;
-&lt;li&gt;Default RefCountedSharedArena.DEFAULT_MAX_PERMITS are reduced to 64. Also fixes the infinite loop when RefCountedSharedArena's underlying Arena#close fails due to concurrent usage of segments.&lt;/li&gt;
-&lt;li&gt;Uses READONCE when reading segment infos, to fix mmap leaks on segment info files. Includes fixes for multiple other resource leaks.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/10_3_0/changes/Changes.html"&gt;https://lucene.apache.org/core/10_3_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.2.2 available</title><link href="/" rel="alternate"></link><published>2025-06-20T00:00:00+00:00</published><updated>2025-06-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-06-20:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.2.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This patch release contains bug fixes that are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1022-release-highlights"&gt;Lucene 10.2.2 Release Highlights&lt;/h3&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Reduce NeighborArray on-heap memory during HNSW graph building&lt;/li&gt;
-&lt;li&gt;Fix IndexSortSortedNumericDocValuesRangeQuery for int sort&lt;/li&gt;
-&lt;li&gt;ValueSource.fromDoubleValuesSource(dvs).getSortField() would throw errors when used if the DoubleValuesSource needed scores &lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Further details of changes are available in the change log available at: &lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/10_2_2/changes/Changes.html"&gt;http://lucene.apache.org/core/10_2_2/changes/Changes.html&lt;/a&gt; &lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.12.2 available</title><link href="/" rel="alternate"></link><published>2025-06-20T00:00:00+00:00</published><updated>2025-06-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-06-20:/</id><summary type=" [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This patch release contains bug fixes that are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9122-release-highlights"&gt;Lucene 9.12.2 Release Highlights&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Reduce NeighborArray on-heap memory during HNSW graph building&lt;/li&gt;
-&lt;li&gt;Fix IndexSortSortedNumericDocValuesRangeQuery for int sort&lt;/li&gt;
-&lt;li&gt;ValueSource.fromDoubleValuesSource(dvs).getSortField() would throw errors when used if the DoubleValuesSource needed scores&lt;/li&gt;
-&lt;li&gt;Disable connectedComponents logic in HNSW graph building.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Further details of changes are available in the change log available at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_12_2/changes/Changes.html"&gt;https://lucene.apache.org/core/9_12_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.2.1 available</title><link href="/" rel="alternate"></link><published>2025-05-01T00:00:00+00:00</published><updated>2025-05-01T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-05-01:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.2.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This patch release contains bug fixes that are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1021-release-highlights"&gt;Lucene 10.2.1 Release Highlights&lt;/h3&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix DISIDocIdStream::count so that it does not try to count beyond max.&lt;/li&gt;
-&lt;li&gt;Correct TermOrdValComparator competitive iterator so that it forces sparse field iteration to be at least scoring window baseline when doing intoBitSet.&lt;/li&gt;
-&lt;li&gt;Provide better impacts for fields indexed with IndexOptions.DOCS&lt;/li&gt;
-&lt;li&gt;Fixed lead cost computations for bulk scorers of conjunctive queries that mix MUST and FILTER clauses, and disjunctive queries that configure a minimum number of matching SHOULD clauses.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Further details of changes are available in the change log available at: &lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/10_2_1/changes/Changes.html"&gt;http://lucene.apache.org/core/10_2_1/changes/Changes.html&lt;/a&gt; &lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.2.0 available</title><link href="/" rel="alternate"></link><published>2025-04-10T00:00:00+00:00</published><updated>2025-04-10T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-04-10:/</id><summary type=" [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search on high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.2.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search on high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous features, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1020-release-highlights"&gt;Lucene 10.2.0 Release Highlights&lt;/h3&gt;
-&lt;p&gt;Lucene 10.2 includes major search-time performance improvements for a wide variety of queries. This is most notably due to:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Improved storage format of doc IDs in BKD trees for faster decoding.
-More vectorization when processing PointRangeQuerys and non-scoring BooleanQuerys.&lt;/li&gt;
-&lt;li&gt;Encoding of dense blocks of postings lists as bit sets instead of FOR-delta. This change also saves a bit of storage.&lt;/li&gt;
-&lt;li&gt;Merging matches of dense conjunctive clauses using bitwise ANDs. This especially helps on postings blocks that are encoded as bit sets.
-Implementing the ACORN-1 algorithm for pre-filtered vector searches.&lt;/li&gt;
-&lt;li&gt;Searches that don't require scores and match many docs should generally see good speedups, depending on how expensive the Collector is. Compared with Lucene 10.1.0, Lucene's nightly benchmarks report the following speedups when counting the number of hits of a the following queries:&lt;ul&gt;
-&lt;li&gt;Disjunctions of term queries: 77% to 4x faster&lt;/li&gt;
-&lt;li&gt;Conjunctions of term queries: 38% to 5x faster&lt;/li&gt;
-&lt;li&gt;Filtered disjunctions of term queries: 2.5x to 4x faster&lt;/li&gt;
-&lt;li&gt;Filtered PointRangeQuery: 3.5x faster&lt;/li&gt;
-&lt;/ul&gt;
-&lt;/li&gt;
-&lt;li&gt;And the following speedup when computing top-100 hits: &lt;ul&gt;
-&lt;li&gt;Pre-filtered vector search: 3.5x faster&lt;/li&gt;
-&lt;/ul&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="changes-in-runtime-behavior"&gt;Changes in Runtime Behavior&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;TieredMergePolicy's default floor segment size was increased from 2MB to 16MB. This is expected to result in slightly slower indexing and about 10 fewer segments per index for applications that flush frequently. This should in-turn help speed up queries that have a high per-segment overhead such as multi-term queries, point queries and vector search.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New Features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Added TopDocs#rrf to combine multiple TopDocs instances using reciprocal rank fusion.&lt;/li&gt;
-&lt;li&gt;Added SeededKnnVectorQuery, an optimization to KnnVectorQuery that allows selecting better entry points for vector search using a seed Query.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;RegexpQuery support for unicode case-insensitive characters and ranges.&lt;br&gt;
-Optimizations&lt;/li&gt;
-&lt;li&gt;Java 24 vector API support&lt;/li&gt;
-&lt;li&gt;Efficiency improvements to Automaton and RegExp&lt;/li&gt;
-&lt;li&gt;Faster merging of HNSW graphs which translated in a 25% indexing speedup in Lucene's nightly benchmarks.&lt;/li&gt;
-&lt;li&gt;Conjunctive queries can now skip applying clauses when they have long runs of matching docs, a case which is not uncommon when an index sort is configured.
-Reduce heap usage during BKD tree merges.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;... plus a multitude of helpful bug fixes!&lt;/p&gt;
-&lt;p&gt;Further details of changes are available in the change log available at: &lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/10_2_0/changes/Changes.html"&gt;http://lucene.apache.org/core/10_2_0/changes/Changes.html&lt;/a&gt; &lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.1.0 available</title><link href="/" rel="alternate"></link><published>2024-12-20T00:00:00+00:00</published><updated>2024-12-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-12-20:/</id><summary type=" [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.1.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1010-release-highlights"&gt;Lucene 10.1.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New Features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Add IndexInput::isLoaded to determine if the contents of an  input is resident in physical memory&lt;/li&gt;
-&lt;li&gt;FeatureField now supports storing term vectors.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;TieredMergePolicy now allows merging up to maxMergeAtOnce segments for merges below the floor segment size, even if maxMergeAtOnce is greater than segmentsPerTier. This makes it more efficient to configure TieredMergePolicy to merge segments aggressively by configuring a high value of floorSegmentSize (e.g. 64MB), a low value of segmentsPerTier (e.g. 4) and a high value of maxMergeAtOnce (e.g. 32).&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Many speedups to top-k query evaluation, in particular: top-level disjunctions, filtered disjunctions, conjunctions, DisjunctionMaxQuery.&lt;/li&gt;
-&lt;li&gt;Speedup to exhaustive evaluation of conjunctive queries by vectorizing the intersection of postings lists.&lt;/li&gt;
-&lt;li&gt;Reduced contention for top-k query evaluation when IndexSearcher is configured with an executor.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;... plus a multitude of helpful bug fixes!&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/10_1_0/changes/Changes.html"&gt;https://lucene.apache.org/core/10_1_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.12.1 available</title><link href="/" rel="alternate"></link><published>2024-12-13T00:00:00+00:00</published><updated>2024-12-13T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-12-13:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9121-release-highlights"&gt;Lucene 9.12.1 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Allow easier configuration of the Panama vectorization provider with newer Java versions. Set the org.apache.lucene.vectorization.upperJavaFeatureVersion system property to increase the set of Java versions that Panama vectorization will provide optimized implementations for.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Fixed backwards compatibility bug that caused sparse (not all documents have a vector) KNN indices written with 9.0.0 to give silently (no exception) terrible recall results when searched by any 9.x release&lt;/li&gt;
-&lt;li&gt;Improve Tessellatorlogic when two holes share the same vertex with the polygon which was failing in valid polygons.&lt;/li&gt;
-&lt;li&gt;Fix backwards compatibility bug that caused 9.12.0 to incorrectly throw IllegalStateException when trying to open an IndexReader on an index created with quantized (int4, int7, int8) KNN vectors using Lucene99HnswScalarQuantizedVectorsFormat.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_12_1/changes/Changes.html"&gt;https://lucene.apache.org/core/9_12_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 10.0.0 available</title><link href="/" rel="alternate"></link><published>2024-10-20T00:00:00+00:00</published><updated>2024-10-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-10-20:/</id><content type="html" [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_10_0_0/CHANGES"&gt;PyLucene 10.0.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_10_0_0/jcc/CHANGES"&gt;JCC 3.15 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 10.0.0 available</title><link href="/" rel="alternate"></link><published>2024-10-14T00:00:00+00:00</published><updated>2024-10-14T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-10-14:/</id><summary type="html">&lt;p&gt; [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.0.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1000-release-highlights"&gt;Lucene 10.0.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="system-requirements"&gt;System requirements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Lucene 10.0 requires JDK 21 or newer&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="api-changes"&gt;API changes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;KNN vector values now have a random-access API.&lt;/li&gt;
-&lt;li&gt;Deprecated APIs have been removed and a number of API changes have been made. Please consult the migrate guide for an extensive list and actions to take to migrate to 10.0.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New Features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;A new IndexInput#prefetch API has been added, allowing query evaluation logic to let the Directory know about regions of data that are about to be read. This helps perform I/O concurrently under the hood. MMapDirectory implements this API using the madvise system call and the MADV_WILLNEED flag on Linux and Mac OS.&lt;/li&gt;
-&lt;li&gt;Lucene now supports sparse indexing on doc values via FieldType#setDocValuesSkipIndexType. The sparse index will record the minimum and maximum values per block of doc IDs. Used in conjunction with index sorting to cluster similar documents together, this allows for very space-efficient and CPU-efficient filtering.&lt;/li&gt;
-&lt;li&gt;Search concurrency is now decoupled from the index geometry, so that an index can be searched using any number of threads, regardless of its number of segments.&lt;/li&gt;
-&lt;li&gt;Kmeans clustering on vectors&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Lucene now opens files with the MADV_RANDOM advice by default on Linux and Mac OS. This results in better efficiency for indexes that exceed the size of the page cache, but can make it slower to load indexes in the page cache. It is possible to revert to the MADV_NORMAL read advice by default by passing -Dorg.apache.lucene.store.defaultReadAdvice=NORMAL as a JVM startup flag.&lt;/li&gt;
-&lt;li&gt;Snowball dictionaries have been upgraded, resulting in improved tokenization. This may require reindexing to ensure consistency of search results with pre-10.0 indexes.&lt;/li&gt;
-&lt;li&gt;The expressions module is now using MethodHandles and &lt;a href="https://openjdk.org/jeps/309"&gt;Dynamic Class-File Constants (JEP 309)&lt;/a&gt; in combination with &lt;a href="https://openjdk.org/jeps/371"&gt;hidden classes (JEP 371)&lt;/a&gt; to implement a strict and type-safe call to external functions. This allows to easier extend expressions with custom functions in secure way because runtime linking of custom functions is no longer the responsibility of the expression [...]
-&lt;/ul&gt;
-&lt;p&gt;... plus a multitude of helpful bug fixes!&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/10_0_0/changes/Changes.html"&gt;https://lucene.apache.org/core/10_0_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 9.12.0 available</title><link href="/" rel="alternate"></link><published>2024-10-11T00:00:00+00:00</published><updated>2024-10-11T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-10-11:/</id><content type="html" [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_9_12_0/CHANGES"&gt;PyLucene 9.12.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_9_12_0/jcc/CHANGES"&gt;JCC 3.14 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 9.12.0 available</title><link href="/" rel="alternate"></link><published>2024-09-28T00:00:00+00:00</published><updated>2024-09-28T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-09-28:/</id><summary type="html">&lt;p&gt; [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library
-written entirely in Java. It is a technology suitable for nearly any
-application that requires structured search, full-text search, faceting,
-nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library
-written entirely in Java. It is a technology suitable for nearly any
-application that requires structured search, full-text search, faceting,
-nearest-neighbor search across high-dimensionality vectors, spell
-correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release is
-available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9120-release-highlights"&gt;Lucene 9.12.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="security-fixes"&gt;Security Fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Deserialization of Untrusted Data vulnerability in Apache Lucene
-   Replicator - CVE-2024-45772 &lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New Features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Improve intra-merge parallelism for many value types. (Ben Trent)&lt;/li&gt;
-&lt;li&gt;Add support JDK 23 to the Panama Vectorization Provider. (Chris Hegarty)&lt;/li&gt;
-&lt;li&gt;Match-time aggregation engine with improved flexibility and performance.
-   (Egor Potemkin, Shradha Shankar)&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Add Intervals.regexp and Intervals.range methods to produce IntervalsSource
-   for regexp and range queries. (Mayya Sharipova)&lt;/li&gt;
-&lt;li&gt;Remove support for writing 8 bit scalar vector quantization. 4 and 7 bit
-   quantization are still supported (Michael McCandless )&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Inline postings skip data to improve performance of queries that need
-   skipping such as conjunctions. (Adrien Grand)&lt;/li&gt;
-&lt;li&gt;Optimizations to the decoding logic of blocks of postings. (Adrien Grand,
-   Uwe Schindler, Greg Miller)&lt;/li&gt;
-&lt;li&gt;Avoid performance degradation with closing shared mapped segment data
-   (Chris Hegarty, Michael Gibney, Uwe Schindler)&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;... plus a multitude of helpful bug fixes!&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_12_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_12_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.11.4 available</title><link href="/" rel="alternate"></link><published>2024-09-24T00:00:00+00:00</published><updated>2024-09-24T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-09-24:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.4.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8114-release-highlights"&gt;Lucene 8.11.4 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;There are no changes from Lucene 8.11.3&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_11_4/changes/Changes.html"&gt;https://lucene.apache.org/core/8_11_4/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.11.1 available</title><link href="/" rel="alternate"></link><published>2024-06-27T00:00:00+00:00</published><updated>2024-06-27T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-06-27:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.11.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9111-release-highlights"&gt;Lucene 9.11.1 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix performance regression in NumericComparator.&lt;/li&gt;
-&lt;li&gt;Remove intra-merge parallelism for everything except HNSW graph merges.&lt;/li&gt;
-&lt;li&gt;Fix bug that prevented adding a parent field to an index with no fields.&lt;/li&gt;
-&lt;li&gt;Fix IndexOutOfBoundsException thrown in DefaultPassageFormatter by unordered matches.&lt;/li&gt;
-&lt;li&gt;StringValueFacetCounts stops throwing NPE when faceting over an empty match-set.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_11_1/changes/Changes.html"&gt;https://lucene.apache.org/core/9_11_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.11.0 available</title><link href="/" rel="alternate"></link><published>2024-06-06T00:00:00+00:00</published><updated>2024-06-06T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-06-06:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.11.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9110-release-highlights"&gt;Lucene 9.11.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Add support for posix_madvise to MMapDirectory: If running on Linux/macOS and Java 21 or later, MMapDirectory uses IOContext to pass suitable MADV flags to kernel of operating system. This may improve paging logic especially when working with large indexes under memory pressure. &lt;/li&gt;
-&lt;li&gt;Expand support for new scalar bit levels for HNSW vectors. This includes 4-bit vectors and an option to compress them to gain a 50% reduction in memory usage.&lt;/li&gt;
-&lt;li&gt;Recursive graph bisection is now supported on indexes that have blocks &lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;MergeScheduler can now provide an executor for intra-merge parallelism. The first implementation is the ConcurrentMergeScheduler.&lt;/li&gt;
-&lt;li&gt;Upgrade icu4j to version 74.2.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Use RWLock to access LRUQueryCache to reduce contention.&lt;/li&gt;
-&lt;li&gt;Speedup multi-segment HNSW graph search for diversifying child kNN queries.&lt;/li&gt;
-&lt;li&gt;Add a MemorySegment Vector scorer - for scoring without copying on-heap. This can improve search latency by almost 2x for byte vectors.&lt;/li&gt;
-&lt;li&gt;Switch to using optimized, primitive collections where possible to improve performance and heap utilization.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_11_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_11_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 9.10.0 available</title><link href="/" rel="alternate"></link><published>2024-03-04T00:00:00+00:00</published><updated>2024-03-04T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-03-04:/</id><content type="html" [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_9_10_0/CHANGES"&gt;PyLucene 9.10.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_9_10_0/jcc/CHANGES"&gt;JCC 3.14 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 9.10.0 available</title><link href="/" rel="alternate"></link><published>2024-02-20T00:00:00+00:00</published><updated>2024-02-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-02-20:/</id><summary type="html">&lt;p&gt; [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.10.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9100-release-highlights"&gt;Lucene 9.10.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Support for similarity-based vector searches, ie. finding all nearest neighbors whose similarity is greater than a configured threshold from a query vector. See [Byte|Float]VectorSimilarityQuery.&lt;/li&gt;
-&lt;li&gt;Index sorting is now compatible with block joins. See IndexWriterConfig#setParentField.&lt;/li&gt;
-&lt;li&gt;MMapDirectory now takes advantage of the now finalized JDK foreign memory API internally when running on Java 22 (or later). This was only supported with Java 19 to 21 until now.&lt;/li&gt;
-&lt;li&gt;SIMD vectorization now takes advantage of JDK vector incubator on Java 22. This was only supported with Java 20 or 21 until now.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Tail postings are now encoded using group-varint. This yielded speedups on queries that match lots of terms that have short postings lists in Lucene's nightly benchmarks.&lt;/li&gt;
-&lt;li&gt;Range queries on points now exit earlier when evaluating a segment that has no matches. This will improve performance when intersected with other queries that have a high up-front cost such as multi-term queries.&lt;/li&gt;
-&lt;li&gt;BooleanQueries that mix SHOULD and FILTER clauses now propagate minimum competitive scores to the SHOULD clauses, yielding significant speedups for top-k queries sorted by descending score.&lt;/li&gt;
-&lt;li&gt;IndexSearcher#count has been optimized on pure disjunctions of two term queries.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_10_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_10_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.11.3 available</title><link href="/" rel="alternate"></link><published>2024-02-08T00:00:00+00:00</published><updated>2024-02-08T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-02-08:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.3.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8113-release-highlights"&gt;Lucene 8.11.3 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;A number of bugs in polygon tessellating have been fixed.&lt;/li&gt;
-&lt;li&gt;GC Load during indexing has been reduced by estimating FST BysteStore block size.&lt;/li&gt;
-&lt;li&gt;BKD trees will no longer possibly overflow when more than 4 billion points are added.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_11_3/changes/Changes.html"&gt;https://lucene.apache.org/core/8_11_3/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.9.2 available</title><link href="/" rel="alternate"></link><published>2024-01-29T00:00:00+00:00</published><updated>2024-01-29T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-01-29:/</id><summary type=" [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.9.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-992-release-highlights"&gt;Lucene 9.9.2 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix NPE when sampling for quantization in Lucene99HnswScalarQuantizedVectorsFormat (Ben Trent)&lt;/li&gt;
-&lt;li&gt;Rollback the tmp storage of BytesRefHash to -1 after sort (Guo Feng)&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_9_2/changes/Changes.html"&gt;https://lucene.apache.org/core/9_9_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.9.1 available</title><link href="/" rel="alternate"></link><published>2023-12-16T00:00:00+00:00</published><updated>2023-12-16T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-12-16:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.9.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-991-release-highlights"&gt;Lucene 9.9.1 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;JVM SIGSEGV crash when compiling computeCommonPrefixLengthAndBuildHistogram (Chris Hegarty)&lt;/li&gt;
-&lt;li&gt;Push and pop OutputAccumulator as IntersectTermsEnumFrames are pushed and popped (Guo Feng, Mike McCandless)&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_9_1/changes/Changes.html"&gt;https://lucene.apache.org/core/9_9_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.9.0 available</title><link href="/" rel="alternate"></link><published>2023-12-04T00:00:00+00:00</published><updated>2023-12-04T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-12-04:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library
-written entirely in Java. It is a technology suitable for nearly any
-application that requires structured search, full-text search, faceting,
-nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.9.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library
-written entirely in Java. It is a technology suitable for nearly any
-application that requires structured search, full-text search, faceting,
-nearest-neighbor search across high-dimensionality vectors, spell
-correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release is
-available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-990-release-highlights"&gt;Lucene 9.9.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New Features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Add int8 scalar quantization to the HNSW vector format. This
-   optionally allows for more compact lossy storage for the vectors,
-   requiring approximately 4x less memory for fast HNSW search.&lt;/li&gt;
-&lt;li&gt;HNSW graph now can be merged with multiple threads, leveraging the
-   same infrastructure that inter-segment concurrency utilizes.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Speed up Panama vector support, use FMA, and test improvements. &lt;/li&gt;
-&lt;li&gt;FSTCompiler can now approximately limit how much RAM it uses to share 
-   suffixes during FST construction using the suffixRAMLimitMB method. &lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Faster top-level conjunctions on term queries when sorting by
-   descending score.&lt;/li&gt;
-&lt;li&gt;Change Postings back to using FOR in Lucene99PostingsFormat. Freqs,
-   positions and offset keep using PFOR.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;... plus a multitude of helpful bug fixes!&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_9_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_9_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.8.0 available</title><link href="/" rel="alternate"></link><published>2023-09-28T00:00:00+00:00</published><updated>2023-09-28T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-09-28:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.8.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-980-release-highlights"&gt;Lucene 9.8.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Faster computation of top-k hits on boolean queries. Lucene's nightly benchmarks report a 20%-30% speedup for disjunctive queries and a 11%-13% speedup for conjunctive queries since Lucene 9.7. Disjunctive queries with many and/or high-frequency terms should see even higher speedups.&lt;/li&gt;
-&lt;li&gt;Faster computation of top-k hits when sorting by field. Lucene's nightly benchmarks report speedups between 7% and 33% since 9.7 depending on the type and cardinality of the field that is used for sorting.&lt;/li&gt;
-&lt;li&gt;Faster indexing of numeric doc values when index sorting is turned on.&lt;/li&gt;
-&lt;li&gt;Expressions now evaluate all arguments in a fully lazy manner, which may provide significant speedups and throughput improvements for heavy expression users.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="api-changes"&gt;API Changes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Move max vector dims limit to Codec (Mayya Sharipova)&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Introduced LeafCollector#finish, a hook that runs after collection has finished running on a leaf.&lt;/li&gt;
-&lt;li&gt;Add "KnnCollector" to "LeafReader" and "KnnVectorReader" so that custom collection of vector search results can be provided. The first custom collector provides "ToParentBlockJoin[Float|Byte]KnnVectorQuery" joining child vector documents with their parent documents.&lt;/li&gt;
-&lt;li&gt;Add support for recursive graph bisection, also called bipartite graph partitioning, and often abbreviated BP, an algorithm for reordering doc IDs that results in more compact postings and faster queries, especially conjunctions.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix HNSW graph search bug that potentially leaked unapproved docs&lt;/li&gt;
-&lt;li&gt;Fix bug in TermsEnum#seekCeil on doc values terms enums that causes IndexOutOfBoundsException.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_8_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_8_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 9.7.0 available</title><link href="/" rel="alternate"></link><published>2023-07-12T00:00:00+00:00</published><updated>2023-07-12T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-07-12:/</id><content type="html">&l [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_9_7_0/CHANGES"&gt;PyLucene 9.7.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_9_7_0/jcc/CHANGES"&gt;JCC 3.13 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 9.7.0 available</title><link href="/" rel="alternate"></link><published>2023-06-25T00:00:00+00:00</published><updated>2023-06-25T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-06-25:/</id><summary type="html">&lt;p&gt;T [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.7.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-970-release-highlights"&gt;Lucene 9.7.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;The new IndexWriter#updateDocuments(Query, Iterable) allows updating multiple documents that match a query at the same time.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Function queries can now compute similarity scores between kNN vectors.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;KNN indexing and querying can now take advantage of vectorization for distance computation between vectors. To enable this, use exactly Java 20 or 21, and pass --add-modules jdk.incubator.vector as a command-line parameter to the Java program.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;KNN queries now run concurrently if the IndexSearcher has been created with an executor.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Queries sorted by field are now able to dynamically prune hits only using the after value. This yields major speedups when paginating deeply.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Reduced merge-time overhead of computing the number of soft deletes.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="changes-in-runtime-behavior"&gt;Changes in runtime behavior&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;KNN vectors are now disallowed to have non-finite values such as NaN or ±Infinity.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Backward reading is no longer an adversarial case for BufferedIndexInput, used by NIOFSDirectory and SimpleFSDirectory. This addresses a performance bug when performing terms dictionary lookups with either of these directories.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;GraphTokenStreamFiniteStrings#articulationPointsRecurse may no longer overflow the stack.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;... plus a number of helpful bug fixes!&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_7_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_7_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 9.6.0 available</title><link href="/" rel="alternate"></link><published>2023-06-03T00:00:00+00:00</published><updated>2023-06-03T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-06-03:/</id><content type="html">&l [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_9_6_0/CHANGES"&gt;PyLucene 9.6.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_9_6_0/jcc/CHANGES"&gt;JCC 3.13 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 9.6.0 available</title><link href="/" rel="alternate"></link><published>2023-05-09T00:00:00+00:00</published><updated>2023-05-09T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-05-09:/</id><summary type="html">&lt;p&gt;T [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.6.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-960-release-highlights"&gt;Lucene 9.6.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Introduce a new KeywordField for simple and efficient filtering, sorting and faceting.&lt;/li&gt;
-&lt;li&gt;Add support for Java 20 foreign memory API. If exactly Java 19 or 20 is used, MMapDirectory will mmap Lucene indexes in chunks of 16 GiB (instead of 1 GiB) and indexes closed while queries are running can no longer crash the JVM.&lt;/li&gt;
-&lt;li&gt;Improved performance for TermInSetQuery, PrefixQuery, WildcardQuery and TermRangeQuery&lt;/li&gt;
-&lt;li&gt;Lower memory usage for BloomFilteringPostingsFormat&lt;/li&gt;
-&lt;li&gt;Faster merges for HNSW indexes&lt;/li&gt;
-&lt;li&gt;Improvements to concurrent indexing throughput under heavy load&lt;/li&gt;
-&lt;li&gt;Correct equals implementation in SynonymQuery&lt;/li&gt;
-&lt;li&gt;'explain' is now implemented on TermAutomatonQuery&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_6_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_6_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.5.0 available</title><link href="/" rel="alternate"></link><published>2023-01-30T00:00:00+00:00</published><updated>2023-01-30T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-01-30:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.5.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-950-release-highlights"&gt;Lucene 9.5.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Added KnnByteVectorField and ByteVectorQuery that are specialized for indexing and querying byte-sized vectors. Deprecated KnnVectorField, KnnVectorQuery and LeafReader#getVectorValues in favour of the newly introduced KnnFloatVectorField, KnnFloatVectorQuery and LeafReader#getFloatVectorValues that are specialized for float vectors.&lt;/li&gt;
-&lt;li&gt;Added IntField, LongField, FloatField and DoubleField: easy to use numeric fields that perform well both for filtering and sorting.&lt;/li&gt;
-&lt;li&gt;Support for Java 19 foreign memory access ("project Panama") was enabled by default removing the need to provide the "--enable-preview" flag.&lt;/li&gt;
-&lt;li&gt;Added ByteWritesTrackingDirectoryWrapper to expose metrics for bytes merged, flushed, and overall write amplification factor.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Improved storage efficiency of connections in the HNSW graph used for vector search&lt;/li&gt;
-&lt;li&gt;Added  new stored fields and term vectors interfaces: IndexReader#storedFields and IndexReader#termVectors. These do not rely upon ThreadLocal storage for each index segment, which can greatly reduce RAM requirements when there are many threads and/or segments.&lt;/li&gt;
-&lt;li&gt;Several improvements were made to IndexSortSortedNumericDocValuesRangeQuery including query execution optimization with points for descending sorts and BoundedDocIdSetIterator construction sped up using bkd binary search.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="other"&gt;Other&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Moved DocValuesNumbersQuery from sandbox to NumericDocValuesField#newSlowSetQuery&lt;/li&gt;
-&lt;li&gt;Fix exponential runtime for nested BooleanQuery#rewrite with non scoring clauses&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_5_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_5_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.4.2 available</title><link href="/" rel="alternate"></link><published>2022-11-21T00:00:00+00:00</published><updated>2022-11-21T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-11-21:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.4.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-942-release-highlights"&gt;Lucene 9.4.2 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Fixed integer overflow when opening segments containing more than ~16M KNN vectors.&lt;/li&gt;
-&lt;li&gt;Fixed cost computation of BitSets created via DocIdSetBuilder, such as for multi-term queries. This may improve performance of multi-term queries.&lt;/li&gt;
-&lt;li&gt;CheckIndex now verifies the consistency of KNN vectors more thoroughly.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_4_2/changes/Changes.html"&gt;https://lucene.apache.org/core/9_4_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 9.4.1 available</title><link href="/" rel="alternate"></link><published>2022-11-07T00:00:00+00:00</published><updated>2022-11-07T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-11-07:/</id><content type="html">&l [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_9_4_1/CHANGES"&gt;PyLucene 9.4.1 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_9_4_1/jcc/CHANGES"&gt;JCC 3.13 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 9.4.1 available</title><link href="/" rel="alternate"></link><published>2022-10-24T00:00:00+00:00</published><updated>2022-10-24T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-10-24:/</id><summary type="html">&lt;p&gt;T [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.4.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-941-release-highlights"&gt;Lucene 9.4.1 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;When reading large segments, the kNN vectors format could fail with a validation error, preventing further writes or searches on the index. This bug is now fixed. Only version 9.4.0 was affected, so it is recommended to skip 9.4.0 if you are using kNN vectors.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_4_1/changes/Changes.html"&gt;https://lucene.apache.org/core/9_4_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.4.0 available</title><link href="/" rel="alternate"></link><published>2022-09-30T00:00:00+00:00</published><updated>2022-09-30T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-09-30:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.4.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-940-release-highlights"&gt;Lucene 9.4.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Added ShapeDocValues/Field, a unified abstraction to represent existing types: XY and lat/long.&lt;/li&gt;
-&lt;li&gt;FacetSets can now be filtered using a Query via MatchingFacetSetCounts.&lt;/li&gt;
-&lt;li&gt;SortField now allows control over whether to apply index-sort optimizations.&lt;/li&gt;
-&lt;li&gt;Support for Java 19 foreign memory access ("project Panama") was added. Applications started with command line parameter "java --enable-preview" will automatically use the new foreign memory API of Java 19 to access indexes on disk with MMapDirectory. This is an opt-in feature and requires explicit Java command line flag passed to your application's Java process (e.g., modify startup parameters of Solr or Elasticsearch/Opensearch)! When enabled, Lucene logs a notice using java. [...]
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Added support for dynamic pruning to queries sorted by a string field that is indexed with both terms and SORTED or SORTED_SET doc values. This can lead to dramatic speedups when applicable.&lt;/li&gt;
-&lt;li&gt;TermInSetQuery is optimized for the case when one of its terms matches all docs in a segment, and it now provides cost estimation, making it usable with IndexOrDocValuesQuery for better query planning.&lt;/li&gt;
-&lt;li&gt;KnnVector fields can now be stored with reduced (8-bit) precision, saving storage and yielding a small query latency improvement.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="other"&gt;Other&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;KnnVector fields' HNSW graphs are now created incrementally when new documents are added, rather than all-at-once when flushing. This yields more consistent predictable behavior at the cost of an overall increase in indexing time.&lt;/li&gt;
-&lt;li&gt;randomizedtesting dependency upgraded to 2.8.1&lt;/li&gt;
-&lt;li&gt;addIndexes(CodecReader) now respects MergePolicy and MergeScheduler, enabling it to do its work concurrently.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_4_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_4_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.3.0 available</title><link href="/" rel="alternate"></link><published>2022-07-29T00:00:00+00:00</published><updated>2022-07-29T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-07-29:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.3.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-930-release-highlights"&gt;Lucene 9.3.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Merge on full flush is enabled now by default with a timeout of 500ms, giving the merge policy a chance to merge NRT segments together before publishing a new point-in-time view of the IndexReader. This should give queries a small performance boost in the near-realtime case, especially terms-dictionary-intensive queries like fuzzy queries.&lt;/li&gt;
-&lt;li&gt;Add getAllChildren functionality to facets.&lt;/li&gt;
-&lt;li&gt;Added facetsets module for high dimensional (hyper-rectangle) faceting. &lt;/li&gt;
-&lt;li&gt;Top-level two-clause disjunctions sorted by score now use the block-max MAXSCORE algorithm, which introduced a 40%-75% speedup in our benchmarks.&lt;/li&gt;
-&lt;li&gt;BooleanQuery can return quick counts for simple boolean queries.&lt;/li&gt;
-&lt;li&gt;When running KnnVectorQuery with a filter, reuse the cached filter bit set.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_3_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_3_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.11.2 available</title><link href="/" rel="alternate"></link><published>2022-06-17T00:00:00+00:00</published><updated>2022-06-17T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-06-17:/</id><summary type="h [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8112-release-highlights"&gt;Lucene 8.11.2 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;Bug fixes&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;LUCENE-10564: Make sure SparseFixedBitSet#or updates ramBytesUsed.&lt;/li&gt;
-&lt;li&gt;LUCENE-10477: Highlighter: WeightedSpanTermExtractor.extractWeightedSpanTerms to Query#rewrite
-  multiple times if necessary.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Optimizations&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;LUCENE-10481: FacetsCollector will not request scores if it does not use them.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_11_2/changes/Changes.html"&gt;https://lucene.apache.org/core/8_11_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.2.0 available</title><link href="/" rel="alternate"></link><published>2022-05-23T00:00:00+00:00</published><updated>2022-05-23T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-05-23:/</id><summary type=" [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.2.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-920-release-highlights"&gt;Lucene 9.2.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Numerous improvements to indexing and query performance for KNN vectors&lt;/li&gt;
-&lt;li&gt;More efficient implementations for count operations on range queries&lt;/li&gt;
-&lt;li&gt;A new FieldExistsQuery that chooses the best index structures to run over for you&lt;/li&gt;
-&lt;li&gt;A new Persian stemmer&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_2_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_2_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 9.1.0 available</title><link href="/" rel="alternate"></link><published>2022-04-27T00:00:00+00:00</published><updated>2022-04-27T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-04-27:/</id><content type="html">&l [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_9_1_0/CHANGES"&gt;PyLucene 9.1.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_9_1_0/jcc/CHANGES"&gt;JCC 3.12 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 9.1.0 available</title><link href="/" rel="alternate"></link><published>2022-03-22T00:00:00+00:00</published><updated>2022-03-22T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-03-22:/</id><summary type="html">&lt;p&gt;T [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.1.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-910-release-highlights"&gt;Lucene 9.1.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Lucene JARs are now proper Java modules, with module descriptors and dependency information&lt;/li&gt;
-&lt;li&gt;Support for filtering in nearest-neighbor vector search&lt;/li&gt;
-&lt;li&gt;Support for intervals queries in the standard query syntax&lt;/li&gt;
-&lt;li&gt;A new token filter SpanishPluralStemFilter for precise stemming of Spanish plurals&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Up to 30% improvement in index throughput for high-dimensional vectors &lt;/li&gt;
-&lt;li&gt;Up to 10% faster nearest neighbor searches on high-dimensional vectors&lt;/li&gt;
-&lt;li&gt;Faster execution of "count" searches across different query types&lt;/li&gt;
-&lt;li&gt;Faster counting for taxonomy facets&lt;/li&gt;
-&lt;li&gt;Several other search speed-ups, including improvements to PointRangeQuery, MultiRangeQuery, and CoveringRangeQuery&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="other"&gt;Other&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;The test framework is now a module, so all classes have been moved from to org.apache.lucene.tests.* to avoid package name conflicts&lt;/li&gt;
-&lt;li&gt;Lucene now faithfully implements the HNSW algorithm for nearest neighbor search by supporting multiple graph layers&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;… plus a number of helpful bug fixes!&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_1_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_1_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.11.1 available</title><link href="/" rel="alternate"></link><published>2021-12-16T00:00:00+00:00</published><updated>2021-12-16T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-12-16:/</id><summary type="h [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8111-release-highlights"&gt;Lucene 8.11.1 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Log4j is upgraded to v2.16.0 to mitigate CVE-2021-44228 (for Luke users)&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 8.11.0 available</title><link href="/" rel="alternate"></link><published>2021-12-15T00:00:00+00:00</published><updated>2021-12-15T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-12-15:/</id><content type="html">&lt;p&gt;This release tracks Lucene Core's 8.11.0 &lt;a href="https://lucene.apache.org/core/corenews.html"&gt;release&lt;/a&gt; and requires Java 8.& [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_8_11_0/CHANGES"&gt;PyLucene 8.11.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_8_11_0/jcc/CHANGES"&gt;JCC 3.11 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 9.0.0 available</title><link href="/" rel="alternate"></link><published>2021-12-07T00:00:00+00:00</published><updated>2021-12-07T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-12-07:/</id><summary type="html">&lt;p&gt;T [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.0.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-900-release-highlights"&gt;Lucene 9.0.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="system-requirements"&gt;System requirements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Lucene 9.0 requires JDK 11 or newer&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Support for indexing high-dimensionality numeric vectors to perform nearest-neighbor search, using the Hierarchical Navigable Small World graph algorithm&lt;/li&gt;
-&lt;li&gt;New Analyzers for Serbian, Nepali, and Tamil languages&lt;/li&gt;
-&lt;li&gt;IME-friendly autosuggest for Japanese&lt;/li&gt;
-&lt;li&gt;Snowball 2, adding Hindi, Indonesian, Nepali, Serbian, Tamil, and Yiddish stemmers&lt;/li&gt;
-&lt;li&gt;New normalization/stemming for Swedish and Norwegian&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Up to 400% faster taxonomy faceting&lt;/li&gt;
-&lt;li&gt;10-15% faster indexing of multi-dimensional points&lt;/li&gt;
-&lt;li&gt;Several times faster sorting on fields that are indexed with points. This optimization used to be an opt-in in late 8.x releases and is now opt-out as of 9.0.&lt;/li&gt;
-&lt;li&gt;ConcurrentMergeScheduler now assumes fast I/O, likely improving indexing speed in case where heuristics would incorrectly detect whether the system had modern I/O or not&lt;/li&gt;
-&lt;li&gt;Encoding of postings lists changed from FOR-delta to PFOR-delta to save further disk space&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="other"&gt;Other&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;File formats have all been changed from big-endian order to little endian order&lt;/li&gt;
-&lt;li&gt;Lucene 9 no longer has split packages. This required renaming some packages outside of the lucene-core JAR, so you will need to adjust some imports accordingly.&lt;/li&gt;
-&lt;li&gt;Using Lucene 9 with the module system should be considered experimental. We expect to make progress on this in future 9.x releases.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_0_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_0_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.11.0 available</title><link href="/" rel="alternate"></link><published>2021-11-16T00:00:00+00:00</published><updated>2021-11-16T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-11-16:/</id><summary type="h [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8110-release-highlights"&gt;Lucene 8.11.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Facets now properly ignore deleted documents when accumulating facet counts for all documents.&lt;/li&gt;
-&lt;li&gt;CheckIndex can run concurrently.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_11_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_11_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.10.1 available</title><link href="/" rel="alternate"></link><published>2021-10-18T00:00:00+00:00</published><updated>2021-10-18T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-10-18:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains bug fixes. The …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.10.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains bug fixes. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8101-release-highlights"&gt;Lucene 8.10.1 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;MultiCollector now handles single leaf collector that wants to skip low-scoring hits but the combined score mode doesn't allow it.&lt;/li&gt;
-&lt;li&gt;Fix for sort optimization with search_after that was wrongly skipping document whose values are equal to the last value of the previous page.&lt;/li&gt;
-&lt;li&gt;Fix for sort optimization with a chunked bulk scorer that was wrongly skipping documents.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_10_1/changes/Changes.html"&gt;https://lucene.apache.org/core/8_10_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.10.0 available</title><link href="/" rel="alternate"></link><published>2021-09-27T00:00:00+00:00</published><updated>2021-09-27T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-09-27:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.10.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8100-release-highlights"&gt;Lucene 8.10.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Multi-valued fields are now supported in numeric range facet counting&lt;/li&gt;
-&lt;li&gt;Added new analyzer for Telugu&lt;/li&gt;
-&lt;li&gt;Near-real-time readers opened from an IndexCommit can now sort their leaves&lt;/li&gt;
-&lt;li&gt;SimpleText codec now implements skipping for its postings lists&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Performance improvements for faceting, including a new protected API to control which fields are counted for drill-down during drill sideways, and optimized drill sideways iterating&lt;/li&gt;
-&lt;li&gt;RegexpQuery's detection of adversarial (ReDoS) regular expressions is improved, catching exotic cases that it missed before, and throwing TooComplexToDeterminizeException&lt;/li&gt;
-&lt;li&gt;Speedup for computing the leading prefix and trailing suffix from an Automaton, and for managing powersets during determinize&lt;/li&gt;
-&lt;li&gt;Speedups for stored fields retrieval with the default codec (BEST_SPEED)&lt;/li&gt;
-&lt;li&gt;IndexWriter uses less RAM when buffering documents, especially in the case of many unique fields&lt;/li&gt;
-&lt;li&gt;forceMerge will now merge any number of segments at once, making it much faster in many cases&lt;/li&gt;
-&lt;li&gt;Compression improvements for docvalues storage&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;... plus a number of exciting bug fixes!&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_10_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_10_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 8.9.0 available</title><link href="/" rel="alternate"></link><published>2021-06-22T00:00:00+00:00</published><updated>2021-06-22T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-06-22:/</id><content type="html"> [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_8_9_0/CHANGES"&gt;PyLucene 8.9.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_8_9_0/jcc/CHANGES"&gt;JCC 3.10 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 8.9.0 available</title><link href="/" rel="alternate"></link><published>2021-06-16T00:00:00+00:00</published><updated>2021-06-16T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-06-16:/</id><summary type="html">&lt;p&gt;T [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.9.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-890-release-highlights"&gt;Lucene 8.9.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Compression was added to SortedSet DocValues, which allowed to significantly reduce their size on disk.&lt;/li&gt;
-&lt;li&gt;BM25FQuery was extended to handle similarities beyond BM25Similarity. It was renamed to CombinedFieldQuery to reflect its more general scope.&lt;/li&gt;
-&lt;li&gt;A new PatternTypingFilter was added to allow setting a type attribute on tokens based on a configured set of regular expressions.&lt;/li&gt;
-&lt;li&gt;An option was added to supply a custom leaf sorter for IndexWriter and DirectoryReader, which allows to speed up sort queries with a provided sort criteria.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_9_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_9_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.8.2 available</title><link href="/" rel="alternate"></link><published>2021-04-12T00:00:00+00:00</published><updated>2021-04-12T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-04-12:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains three bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.8.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains three bug fixes. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-882-release-highlights"&gt;Lucene 8.8.2 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;LUCENE-9870: Fix Circle2D intersectsLine t-value (distance) range clamp&lt;/li&gt;
-&lt;li&gt;LUCENE-9744: NPE on a degenerate query in MinimumShouldMatchIntervalsSource$MinimumMatchesIterator.getSubMatches().&lt;/li&gt;
-&lt;li&gt;LUCENE-9762: DoubleValuesSource.fromQuery (also used by FunctionScoreQuery.boostByQuery) could throw an exception when the query implements TwoPhaseIterator and when the score is requested repeatedly&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_8_2/changes/Changes.html"&gt;https://lucene.apache.org/core/8_8_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 8.8.1 available</title><link href="/" rel="alternate"></link><published>2021-03-08T00:00:00+00:00</published><updated>2021-03-08T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-03-08:/</id><content type="html">&l [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_8_8_1/CHANGES"&gt;PyLucene 8.8.1 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_8_8_1/jcc/CHANGES"&gt;JCC 3.9 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 8.8.1 available</title><link href="/" rel="alternate"></link><published>2021-02-22T00:00:00+00:00</published><updated>2021-02-22T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-02-22:/</id><summary type="html">&lt;p&gt;T [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.8.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-881-release-highlights"&gt;Lucene 8.8.1 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;No changes from 8.8.0&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_8_1/changes/Changes.html"&gt;https://lucene.apache.org/core/8_8_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.8.0 available</title><link href="/" rel="alternate"></link><published>2021-01-29T00:00:00+00:00</published><updated>2021-01-29T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-01-29:/</id><summary type="ht [...]
-The Lucene PMC is pleased to announce the release of Apache Lucene 8.8&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially …&lt;/p&gt;</summary><content type="html">&lt;p&gt;29/01/2021, Apache Lucene™ 8.8 available
-The Lucene PMC is pleased to announce the release of Apache Lucene 8.8&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;http://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 8.8 Release Highlights:
-LatLonPoint query that accepts an array of LatLonGeometries, support for spatial relationships, &lt;/p&gt;
-&lt;p&gt;XYPoint query that accepts an array of XYGeometries&lt;/p&gt;
-&lt;p&gt;Doc values now allow configuring how to trade compression for retrieval speed&lt;/p&gt;
-&lt;p&gt;Further details of changes are available in the change log available at:
-&lt;a href="http://lucene.apache.org/core/8_8_0/changes/Changes.html"&gt;http://lucene.apache.org/core/8_8_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please report any feedback to the mailing lists:&lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/discussion.html"&gt;http://lucene.apache.org/core/discussion.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Note: The Apache Software Foundation uses an extensive mirroring network for distributing releases. It is possible that the mirror you are using may not have replicated the release yet. If that is the case, please try another mirror. This also applies to Maven access.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.7.0 available</title><link href="/" rel="alternate"></link><published>2020-11-03T00:00:00+00:00</published><updated>20 [...]
-The Lucene PMC is pleased to announce the release of Apache Lucene 8.7.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially …&lt;/p&gt;</summary><content type="html">&lt;p&gt;03/11/2020, Apache Lucene™ 8.7 available
-The Lucene PMC is pleased to announce the release of Apache Lucene 8.7.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;http://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 8.7 Release Highlights:
-Better compression of stored fields. Stored fields now use dictionaries in order to improve the compression ratio when there is a lot of redundancy across documents. This works for both the BEST_SPEED and the BEST_COMPRESSION modes.&lt;/p&gt;
-&lt;p&gt;Faster sorting by field. When a doc-value field is also indexed with points, Lucene now takes advantage of this points index in order to skip documents whose sort value is not competitive.&lt;/p&gt;
-&lt;p&gt;Faster flushing of stored fields when index sorting is enabled. This can significantly speed up indexing when a non-negligible amount of data is stored in the index and index sorting is enabled.&lt;/p&gt;
-&lt;p&gt;Further details of changes are available in the change log available at:
-&lt;a href="http://lucene.apache.org/core/8_7_0/changes/Changes.html"&gt;http://lucene.apache.org/core/8_7_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please report any feedback to the mailing lists:&lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/discussion.html"&gt;http://lucene.apache.org/core/discussion.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Note: The Apache Software Foundation uses an extensive mirroring network for distributing releases. It is possible that the mirror you are using may not have replicated the release yet. If that is the case, please try another mirror. This also applies to Maven access.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.6.3 available</title><link href="/" rel="alternate"></link><published>2020-10-07T00:00:00+00:00</published><updated>20 [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no additional bug …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.6.3.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no additional bug fixes over the previous version 8.6.2. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 8.6.1 available</title><link href="/" rel="alternate"></link><published>2020-09-09T00:00:00+00:00</published><updated>2020-09-09T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-09-09:/</id><content type="html">&lt;p&gt;This release trac [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_8_6_1/CHANGES"&gt;PyLucene 8.6.1 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_8_6_1/jcc/CHANGES"&gt;JCC 3.8 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 8.6.2 available</title><link href="/" rel="alternate"></link><published>2020-09-01T00:00:00+00:00</published><updated>2020-09-01T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-09-01:/</id><summary type="html">&lt;p&gt;T [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.6.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-862-bug-fixes"&gt;Lucene 8.6.2 Bug Fixes:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;LUCENE-9478: IndexWriter leaked about 500 byte of heap space for each full-flush, getReader or commit. This was a regression in 6.8.0&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_6_2/changes/Changes.html"&gt;https://lucene.apache.org/core/8_6_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.6.1 available</title><link href="/" rel="alternate"></link><published>2020-08-13T00:00:00+00:00</published><updated>2020-08-13T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-08-13:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.6.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-861-release-highlights"&gt;Lucene 8.6.1 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;LUCENE-9443: The UnifiedHighlighter was closing the underlying reader when there were multiple term-vector fields.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_6_1/changes/Changes.html"&gt;https://lucene.apache.org/core/8_6_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.6.0 available</title><link href="/" rel="alternate"></link><published>2020-07-15T00:00:00+00:00</published><updated>2020-07-15T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-07-15:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.6.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-860-release-highlights"&gt;Lucene 8.6.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;API change in: SimpleFSDireectory, IndexWriterConfig, MergeScheduler, SortFields, SimpleBindings, QueryVisitor, DocValues, CodecUtil.&lt;/li&gt;
-&lt;li&gt;New: IndexWriter merge-on-commit feature to selectively merge small segments on commit, subject to a configurable timeout, to improve search performance by reducing the number of small segments for searching.&lt;/li&gt;
-&lt;li&gt;New: Grouping by range based on DoubleValueSource and LongValueSource.&lt;/li&gt;
-&lt;li&gt;Optimizations: BKD trees and index, DoubleValuesSource/QueryValueSource, UsageTrackingQueryingCachingPolicy, FST, Geometry queries, Points, UniformSplit.&lt;/li&gt;
-&lt;li&gt;Others: Ukrainian analyzer, checksums verification, resource leaks fixes.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_6_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_6_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.5.2 available</title><link href="/" rel="alternate"></link><published>2020-05-26T00:00:00+00:00</published><updated>2020-05-26T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-05-26:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.5.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fixes. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-852-release-highlights"&gt;Lucene 8.5.2 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;LUCENE-9350: Don't cache automata on FuzzyQuery&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_5_2/changes/Changes.html"&gt;https://lucene.apache.org/core/8_5_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 8.3.0 available</title><link href="/" rel="alternate"></link><published>2020-04-29T00:00:00+00:00</published><updated>2020-04-29T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-04-29:/</id><content type="html">&l [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_8_1_1/CHANGES"&gt;PyLucene 8.3.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_8_3_0/jcc/CHANGES"&gt;JCC 3.7 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 7.7.3 available</title><link href="/" rel="alternate"></link><published>2020-04-28T00:00:00+00:00</published><updated>2020-04-28T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-04-28:/</id><summary type="html">&lt;p&gt;T [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 1 bugfix in …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.7.3.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 1 bugfix in Lucene. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_7_3/changes/Changes.html"&gt;https://lucene.apache.org/core/7_7_3/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.5.1 available</title><link href="/" rel="alternate"></link><published>2020-04-16T00:00:00+00:00</published><updated>2020-04-16T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-04-16:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.5.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 8.5.1 Bug Fixes:&lt;/p&gt;
-&lt;p&gt;LUCENE-9300: Index corruption with doc values updates and addIndexes.&lt;/p&gt;
-&lt;p&gt;Further details of changes are available in the change log available at: &lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_5_1/changes/Changes.html"&gt;https://lucene.apache.org/core/8_5_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.5.0 available</title><link href="/" rel="alternate"></link><published>2020-03-24T00:00:00+00:00</published><updated>2020-03-24T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-03-24:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.5.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-850-release-highlights"&gt;Lucene 8.5.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;XYPointField allows you to index points in flat X,Y space and efficiently find documents that fall within a bounding box, distance or arbitrary polygon&lt;/li&gt;
-&lt;li&gt;New query builders on LatLonShape allow you to efficiently find documents with a specific relation to a point or polygon&lt;/li&gt;
-&lt;li&gt;You can now store up to 16 data dimensions in a Point field&lt;/li&gt;
-&lt;li&gt;KoreanTokenizer supports custom dictionaries&lt;/li&gt;
-&lt;li&gt;Binary doc values are now compressed, and term dictionaries have improved compression&lt;/li&gt;
-&lt;li&gt;Index flushes are up to 20% faster if all docvalues updates are updating a single field to the same value&lt;/li&gt;
-&lt;li&gt;The index of stored fields and term vectors is now stored off-heap&lt;/li&gt;
-&lt;li&gt;Query parsers based on QueryBuilder can boost particular terms or synonyms by setting BoostAttribute values on a token stream&lt;/li&gt;
-&lt;li&gt;Intervals queries correctly handle repeated subterms in ordered and unordered sources&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_5_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_5_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.4.1 available</title><link href="/" rel="alternate"></link><published>2020-01-13T00:00:00+00:00</published><updated>2020-01-13T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-01-13:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.4.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-841-release-highlights"&gt;Lucene 8.4.1 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;(No Changes since 8.4.0)&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.4.0 available</title><link href="/" rel="alternate"></link><published>2019-12-29T00:00:00+00:00</published><updated>2019-12-29T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-12-29:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.4.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.4.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-840-release-highlights"&gt;Lucene 8.4.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;LatLonShape now supports the "CONTAINS" relation, which enables to find all indexed shapes that contain the query shape.&lt;/li&gt;
-&lt;li&gt;Concurrent search is getting more efficient by allowing collectors to share information across threads in order to more efficiently skip non-competitive hits.&lt;/li&gt;
-&lt;li&gt;Faster FST lookups on dense nodes.&lt;/li&gt;
-&lt;li&gt;Postings are now decoded using SIMD instructions.&lt;/li&gt;
-&lt;li&gt;LRUQueryCache includes new heuristics that prevent caching from hurting latency too much.&lt;/li&gt;
-&lt;li&gt;LatLonShape builds a more efficient tree that is expected to translate into search speed improvements.&lt;/li&gt;
-&lt;li&gt;BaseDirectoryReader no longer sums up document counts across leaves eagerly, allowing for more efficient reader views that hide a subset of documents.&lt;/li&gt;
-&lt;li&gt;The index on top of BKD trees is now stored off-heap with MMapDirectory.&lt;/li&gt;
-&lt;li&gt;Simple Intervals queries support highlighting.&lt;/li&gt;
-&lt;li&gt;Reading DocValues can be interrupted when timeout is exceeded.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_4_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_4_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.3.1 available</title><link href="/" rel="alternate"></link><published>2019-12-03T00:00:00+00:00</published><updated>2019-12-03T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-12-03:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.3.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-831-release-highlights"&gt;Lucene 8.3.1 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Bugfix: MultiTermIntervalsSource.visit() was not calling back to its visitor&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_3_1/changes/Changes.html"&gt;https://lucene.apache.org/core/8_3_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.3.0 available</title><link href="/" rel="alternate"></link><published>2019-11-02T00:00:00+00:00</published><updated>2019-11-02T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-11-02:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.3.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-830-release-highlights"&gt;Lucene 8.3.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;New SpanishMinimalStemFilter&lt;/li&gt;
-&lt;li&gt;New "export all terms and doc freqs" feature to Luke with delimiters&lt;/li&gt;
-&lt;li&gt;Composite Matches from multiple subqueries now allow access to their submatches, and a new NamedMatches API allows marking of subqueries and a simple way to find which subqueries have matched on a given&lt;/li&gt;
-&lt;li&gt;Range Query For Multiple Connected Ranges&lt;/li&gt;
-&lt;li&gt;LatLonDocValuesPointInPolygonQuery for LatLonDocValuesField&lt;/li&gt;
-&lt;li&gt;New UniformSplitPostingsFormat (name "UniformSplit") primarily benefiting in simplicity and extensibility&lt;/li&gt;
-&lt;li&gt;New STUniformSplitPostingsFormat (name "SharedTermsUniformSplit") that shares a single internal term dictionary across fields&lt;/li&gt;
-&lt;li&gt;DisjunctionMaxQuery more efficiently leverages impacts to skip non-competitive hits&lt;/li&gt;
-&lt;li&gt;BooleanQuery with no scoring clause can now early terminate the query when the total hits is not requested&lt;/li&gt;
-&lt;li&gt;Matches on wildcard queries will defer building their full disjunction until a MatchesIterator is pulled&lt;/li&gt;
-&lt;li&gt;spatial-extras quad and packed quad prefix trees now index points faster&lt;/li&gt;
-&lt;li&gt;Add additional leaf node level optimizations in LatLonShapeBoundingBoxQuery&lt;/li&gt;
-&lt;li&gt;Improve performance of WITHIN and DISJOINT queries for Shape queries by doing just one pass whenever possible&lt;/li&gt;
-&lt;li&gt;Introduce shared count based early termination across multiple slices&lt;/li&gt;
-&lt;li&gt;Blocktree's seekExact now short-circuits false if the term isn't in the min-max range of the segment. Large perf gain for ID/time like data when populated sequentially&lt;/li&gt;
-&lt;li&gt;Show SPI names instead of class names in Luke Analysis tab&lt;/li&gt;
-&lt;li&gt;GraphTokenStreamFiniteStrings preserves all Token attributes through its finite strings TokenStreams&lt;/li&gt;
-&lt;li&gt;Introduced SpanPositionRange into XML Query Parser&lt;/li&gt;
-&lt;li&gt;Use a sort key instead of true distance in NearestNeighbor&lt;/li&gt;
-&lt;li&gt;Tessellator labels the edges of the generated triangles whether they belong to the original polygon&lt;/li&gt;
-&lt;li&gt;Use exact distance between point and bounding rectangle in FloatPointNearestNeighbor&lt;/li&gt;
-&lt;li&gt;The Korean analyzer now splits tokens on boundaries between digits and alphabetic characters&lt;/li&gt;
-&lt;li&gt;MoreLikeThis is biased for uncommon fields&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_3_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_3_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 8.1.1 available</title><link href="/" rel="alternate"></link><published>2019-09-11T00:00:00+00:00</published><updated>2019-09-11T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-09-11:/</id><content type="html">&l [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_8_1_1/CHANGES"&gt;PyLucene 8.1.1 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_8_1_1/jcc/CHANGES"&gt;JCC 3.6 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>New mailing lists</title><link href="/" rel="alternate"></link><published>2019-09-06T00:00:00+00:00</published><updated>2019-09-06T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-09-06:/</id><summary type="html">&lt;p&gt;The Lucene pro [...]
-High-volume automated emails from our bug tracker, JIRA and GitHub will be moved from the &lt;code&gt;dev@&lt;/code&gt; list to &lt;code&gt;issues@&lt;/code&gt; and
-automated emails from our Jenkins CI build servers will be moved …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene project has added two new announce mailing lists, &lt;code&gt;issues@lucene.apache.org&lt;/code&gt; and &lt;code&gt;builds@lucene.apache.org&lt;/code&gt;.
-High-volume automated emails from our bug tracker, JIRA and GitHub will be moved from the &lt;code&gt;dev@&lt;/code&gt; list to &lt;code&gt;issues@&lt;/code&gt; and
-automated emails from our Jenkins CI build servers will be moved from the &lt;code&gt;dev@&lt;/code&gt; list to &lt;code&gt;builds@&lt;/code&gt;.&lt;/p&gt;
-&lt;p&gt;This is an effort to reduce the sometimes overwhelming email volume on our main development mailing list and thus make it
-easier for the community to follow important discussions by humans on the &lt;code&gt;dev@lucene.apache.org&lt;/code&gt; list.&lt;/p&gt;
-&lt;p&gt;Everyone who wants to continue receiving these automated emails should sign up for one or both of the two new lists.
-Sign-up instructions can be found on the &lt;a href="https://lucene.apache.org/core/discussion.html"&gt;Lucene-java&lt;/a&gt;
-and &lt;a href="https://lucene.apache.org/solr/community.html#mailing-lists-irc"&gt;Solr&lt;/a&gt; web sites.&lt;/p&gt;</content><category term="news"></category></entry><entry><title>Apache Lucene™ 8.2.0 available</title><link href="/" rel="alternate"></link><published>2019-07-26T00:00:00+00:00</published><updated>2019-07-26T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-07-26:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to anno [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.2.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-820-release-highlights"&gt;Lucene 8.2.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="api-changes"&gt;API Changes:&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Intervals queries has been moved from the sandbox to the queries module.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New Features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;New XYShape Field and Queries for indexing and querying general cartesian geometries.&lt;/li&gt;
-&lt;li&gt;Snowball stemmer/analyzer for the Estonian language.&lt;/li&gt;
-&lt;li&gt;Provide a FeatureSortfield to allow sorting search hits by descending value of a feature.&lt;/li&gt;
-&lt;li&gt;Add new KoreanNumberFilter that can change Hangul character to number and process decimal point.&lt;/li&gt;
-&lt;li&gt;Add doc-value support to range fields.&lt;/li&gt;
-&lt;li&gt;Add monitor subproject (previously Luwak monitoring library) that allows a stream of documents to be matched against a set of registered queriesin an efficient manner.&lt;/li&gt;
-&lt;li&gt;Add a numeric range query in sandbox that takes advantage of index sorting.Add a numeric range query in sandbox that takes advantage of index sorting.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Use exponential search instead of binary search in IntArrayDocIdSet#advance method.&lt;/li&gt;
-&lt;li&gt;Use incoming thread for execution if IndexSearcher has an executor. Now caller threads execute at least one search on an index even if there is an executor provided to minimize thread context switching.&lt;/li&gt;
-&lt;li&gt;New storing strategy for BKD tree leaves with low cardinality that can lower storage costs and It can be used at search time to speed up queries.&lt;/li&gt;
-&lt;li&gt;Load frequencies lazily only when needed in BlockDocsEnum and BlockImpactsEverythingEnum.&lt;/li&gt;
-&lt;li&gt;Phrase queries now leverage impacts.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_2_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_2_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.7.2 available</title><link href="/" rel="alternate"></link><published>2019-06-04T00:00:00+00:00</published><updated>2019-06-04T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-06-04:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 9 bugfixes in …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.7.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 9 bugfixes in Lucene. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_7_2/changes/Changes.html"&gt;https://lucene.apache.org/core/7_7_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.1.1 available</title><link href="/" rel="alternate"></link><published>2019-05-28T00:00:00+00:00</published><updated>2019-05-28T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-05-28:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.1.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over 8.1.0. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.1.0 available</title><link href="/" rel="alternate"></link><published>2019-05-16T00:00:00+00:00</published><updated>2019-05-16T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-05-16:/</id><summary type="html">&lt;p&gt;The Lucene  [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.1.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-810-release-highlights"&gt;Lucene 8.1.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;A query introspection API has been introduced.&lt;/li&gt;
-&lt;li&gt;Luke, well-known GUI for inspecting Lucene indexes, now added as a Lucene module&lt;/li&gt;
-&lt;li&gt;Merging dimensional points to use radix partitioning, which has also been optimized&lt;/li&gt;
-&lt;li&gt;Bugfix: LatLonShapePolygonQuery returns incorrect WITHIN results with shared boundaries&lt;/li&gt;
-&lt;li&gt;TieredMergePolicy#findForcedMerges now tries to create the cheapest merges&lt;/li&gt;
-&lt;li&gt;Build point writers in the BKD tree only when they are needed&lt;/li&gt;
-&lt;li&gt;SynonymQuery can now deboost the document frequency of each term when blending synonym scores&lt;/li&gt;
-&lt;li&gt;ConstantScoreQuery can early terminate if minimum score &amp;gt; constant score (total hits are not requested)&lt;/li&gt;
-&lt;li&gt;DateRangePrefixTree can now parse more precise dates&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_1_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_1_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.6.6 available</title><link href="/" rel="alternate"></link><published>2019-04-05T00:00:00+00:00</published><updated>2019-04-05T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-04-05:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-pla&lt;/p&gt;
-&lt;p&gt;This release contains no change over …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.6.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-pla&lt;/p&gt;
-&lt;p&gt;This release contains no change over 6.6.4. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.6"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.6.6&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 7.7.1 available</title><link href="/" rel="alternate"></link><published>2019-03-18T00:00:00+00:00</published><updated>2019-03-18T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-03-18:/</id><content type="html">&lt;p& [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_7_7_1/CHANGES"&gt;PyLucene 7.7.1 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_7_7_1/jcc/CHANGES"&gt;JCC 3.5 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 8.0.0 available</title><link href="/" rel="alternate"></link><published>2019-03-14T00:00:00+00:00</published><updated>2019-03-14T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-03-14:/</id><summary type="html">&lt;p&gt;T [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.0.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-800-release-highlights"&gt;Lucene 8.0.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="query-execution"&gt;Query execution&lt;/h4&gt;
-&lt;p&gt;Term queries, phrase queries and boolean queries introduced new optimization that enables efficient skipping over non-competitive documents when the total hit count is not needed. Depending on the exact query and data distribution, queries might run between a few percents slower and many times faster, especially term queries and pure disjunctions.&lt;/p&gt;
-&lt;p&gt;In order to support this enhancement, some API changes have been made:
- * TopDocs.totalHits is no longer a long but an object that gives a lower bound of the actual hit count.
- * IndexSearcher's search and searchAfter methods now only compute total hit counts accurately up to 1,000 in order to enable this optimization by default.
- * Queries are now required to produce non-negative scores.&lt;/p&gt;
-&lt;h4 id="codecs"&gt;Codecs&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Postings now index score impacts alongside skip data. This is how term queries optimize collection of top hits when hit counts are not needed.&lt;/li&gt;
-&lt;li&gt;Doc values introduced jump tables, so that advancing runs in constant time. This is especially helpful on sparse fields.&lt;/li&gt;
-&lt;li&gt;The terms index FST is now loaded off-heap for non-primary-key fields using MMapDirectory, reducing heap usage for such fields.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="custom-scoring"&gt;Custom scoring&lt;/h4&gt;
-&lt;p&gt;The new FeatureField allows efficient integration of static features such as a pagerank into the score. Furthermore, the new LongPoint#newDistanceFeatureQuery and LatLonPoint#newDistanceFeatureQuery methods allow boosting by recency and geo-distance respectively. These new helpers are optimized for the case when total hit counts are not needed. For instance if the pagerank has a significant weight in your scores, then Lucene might be able to skip over documents that have a low p [...]
-&lt;p&gt;Further details of changes are available in the change log available at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_0_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_0_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.7.1 available</title><link href="/" rel="alternate"></link><published>2019-03-01T00:00:00+00:00</published><updated>2019-03-01T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-03-01:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.7.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over 7.7.0. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.7.0 available</title><link href="/" rel="alternate"></link><published>2019-02-11T00:00:00+00:00</published><updated>2019-02-11T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-02-11:/</id><summary type="html">&lt;p&gt;The Lucene  [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.7.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-770-release-highlights"&gt;Lucene 7.7.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix LatLonShape WITHIN queries that fail with Multiple search Polygons that share the dateline.&lt;/li&gt;
-&lt;li&gt;LatLonShape's within and disjoint queries can return false positives with indexed multi-shapes.&lt;/li&gt;
-&lt;li&gt;ExitableDirectoryReader may now time out queries that run on points such as range queries or geo queries.&lt;/li&gt;
-&lt;li&gt;StandardTokenizer and UAX29URLEmailTokenizer now support Unicode 9.0, and provide Unicode UTS#51 v11.0 Emoji tokenization with the "&lt;EMOJI&gt;" token type.&lt;/li&gt;
-&lt;li&gt;TopFieldCollector can now early-terminates queries when sorting by SortField.DOC.&lt;/li&gt;
-&lt;li&gt;Speed up merging segments of points with data dimensions by only sorting on the indexed dimensions.&lt;/li&gt;
-&lt;li&gt;The KoreanTokenizer no longer splits unknown words on combining diacritics and detects script boundaries more accurately with Character#UnicodeScript#of.&lt;/li&gt;
-&lt;li&gt;Change LatLonShape encoding to use 4 bytes Per Dimension.&lt;/li&gt;
-&lt;li&gt;BufferedUpdates now uses an optimized storage for buffering docvalues updates that can save up to 80% of the heap used compared to the previous implementation and uses non-object based datastructures.&lt;/li&gt;
-&lt;li&gt;Moved to the default accepted overhead ratio for packet ints in DocValuesFieldUpdates yields an up-to 4x performance improvement when applying doc values updates.&lt;/li&gt;
-&lt;li&gt;Doc-value updates get applied faster by sorting with quicksort, rather than an in-place mergesort, which needs to perform fewer swaps.&lt;/li&gt;
-&lt;li&gt;Decrease I/O pressure when merging high dimensional points.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_7_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_7_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 7.6.0 available</title><link href="/" rel="alternate"></link><published>2019-01-11T00:00:00+00:00</published><updated>2019-01-11T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-01-11:/</id><content type="html">&l [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_7_6_0/CHANGES"&gt;PyLucene 7.6.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_7_6_0/jcc/CHANGES"&gt;JCC 3.4 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 7.6.0 available</title><link href="/" rel="alternate"></link><published>2018-12-14T00:00:00+00:00</published><updated>2018-12-14T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-12-14:/</id><summary type="html">&lt;p&gt;The Luc [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.6.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-760-release-highlights"&gt;Lucene 7.6.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Index sorting corruption due to numeric overflow has been fixed. Indices affected by this bug can be detected by running the CheckIndex command on a 7.6+ release distribution.&lt;/li&gt;
-&lt;li&gt;Better tessellation processing of Polygons including graceful exceptions for detecting invalid shapes.&lt;/li&gt;
-&lt;li&gt;Points codec now supports &lt;code&gt;selective indexing&lt;/code&gt;; the ability to designate dimensions as as "data only" dimensions that do not affect construction of the index.&lt;/li&gt;
-&lt;li&gt;New Simple WKT Shape Parser builds lucene geometries (polygons, lines, rectangles) from WKT format.&lt;/li&gt;
-&lt;li&gt;New LatLonShapeLineQuery queries indexed shapes with arbitrary lines.&lt;/li&gt;
-&lt;li&gt;analyzeGraphPhrase query builder creates one phrase query per finite strings in the graph based on slop parameter.&lt;/li&gt;
-&lt;li&gt;Performance in PerFieldMergeState#FilterFieldInfos has been improved from O(N) to O(1) lookup time.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_6_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_6_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 7.5.0 available</title><link href="/" rel="alternate"></link><published>2018-10-19T00:00:00+00:00</published><updated>2018-10-19T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-10-19:/</id><content type="html">&l [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_7_5_0/CHANGES"&gt;PyLucene 7.5.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_7_5_0/jcc/CHANGES"&gt;JCC 3.3 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 7.5.0 available</title><link href="/" rel="alternate"></link><published>2018-09-24T00:00:00+00:00</published><updated>2018-09-24T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-09-24:/</id><summary type="html">&lt;p&gt;The Luc [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.5.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-750-release-highlights"&gt;Lucene 7.5.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;IndexWriter#deleteDocs(Query... query) applies deletes to wrong documents if the index is sorted.&lt;/li&gt;
-&lt;li&gt;TieredMergePolicy now respects maxSegmentSizeMB by default when executing findForcedMerges and findForcedDeletesMerges.&lt;/li&gt;
-&lt;li&gt;A new points based Shape Indexing and Searching that decomposes shapes into a triangular mesh and indexes individual triangles as a 6 dimension point.&lt;/li&gt;
-&lt;li&gt;A new ByteBuffer based Directory implementation that aims to replace the deprecated RAMDirectory.&lt;/li&gt;
-&lt;li&gt;The UnifiedHighlighter can now use the MatchesIterator API to highlight any query more accurately.&lt;/li&gt;
-&lt;li&gt;TopFieldComparator can now stop comparing documents if the index is sorted, even if hits still need to be visited to compute the hit count.&lt;/li&gt;
-&lt;li&gt;TieredMergePolicy can control how aggressively deletes should be reclaimed with the new deletesPctAllowed setting.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_5_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_5_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 7.4.0 available</title><link href="/" rel="alternate"></link><published>2018-09-03T00:00:00+00:00</published><updated>2018-09-03T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-09-03:/</id><content type="html">&l [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_7_4_0/CHANGES"&gt;PyLucene 7.4.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_7_4_0/jcc/CHANGES"&gt;JCC 3.2 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 6.6.5 available</title><link href="/" rel="alternate"></link><published>2018-07-03T00:00:00+00:00</published><updated>2018-07-03T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-07-03:/</id><summary type="html">&lt;p&gt;The Luc [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.5.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over 6.6.4. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.5"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.6.5&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.4.0 available</title><link href="/" rel="alternate"></link><published>2018-06-27T00:00:00+00:00</published><updated>2018-06-27T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-06-27:/</id><summary type="html"> [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.4.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_4_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_4_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.6.4 available</title><link href="/" rel="alternate"></link><published>2018-05-15T00:00:00+00:00</published><updated>2018-05-15T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-05-15:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.4.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over 6.6.3. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.4"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.6.4&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.3.1 available</title><link href="/" rel="alternate"></link><published>2018-05-15T00:00:00+00:00</published><updated>2018-05-15T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-05-15:/</id><summary type="html"> [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one build change …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.3.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one build change. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/mirrors-core-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_3_1/changes/Changes.html"&gt;https://lucene.apache.org/core/7_3_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.3.0 available</title><link href="/" rel="alternate"></link><published>2018-04-04T00:00:00+00:00</published><updated>2018-04-04T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-04-04:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.3.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/mirrors-core-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_3_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_3_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.6.3 available</title><link href="/" rel="alternate"></link><published>2018-03-07T00:00:00+00:00</published><updated>2018-03-07T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-03-07:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one build change …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.3.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one build change. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/mirrors-core-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/6_6_3/changes/Changes.html"&gt;https://lucene.apache.org/core/6_6_3/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.2.1 available</title><link href="/" rel="alternate"></link><published>2018-01-15T00:00:00+00:00</published><updated>2018-01-15T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-01-15:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.2.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_2_1/changes/Changes.html"&gt;https://lucene.apache.org/core/7_2_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-721-bug-fix"&gt;Lucene 7.2.1 Bug Fix:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix advanceExact on SortedNumericDocValues produced by Lucene54DocValuesProducer.&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.2.0 available</title><link href="/" rel="alternate"></link><published>2017-12-21T00:00:00+00:00</published><updated>2017-12-21T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-12-21:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.2.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.2.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_2_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_2_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-720-release-highlights"&gt;Lucene 7.2.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Specific query implementations can now opt out of caching.&lt;/li&gt;
-&lt;li&gt;TopFieldDocCollector can now early terminate collection of matches when the index is sorted and the total hit count is not requested.&lt;/li&gt;
-&lt;li&gt;IndexWriter#flushNextBuffer gives more fine-grained control over the memory usage of IndexWriter.&lt;/li&gt;
-&lt;li&gt;Fixed document accounting in IndexWriter.&lt;/li&gt;
-&lt;li&gt;Query scores can be exposed in a ValuesSource using DoubleValuesSource.fromQuery().&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 5.5.5 available</title><link href="/" rel="alternate"></link><published>2017-10-24T00:00:00+00:00</published><updated>2017-10-24T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-10-24:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.5.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.5.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/5_5_5/changes/Changes.html"&gt;https://lucene.apache.org/core/5_5_5/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;This release includes a critical security fix. Details:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Disallow resolving of external entities in queryparser/xml/CoreParser by default.&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.6.2 available</title><link href="/" rel="alternate"></link><published>2017-10-18T00:00:00+00:00</published><updated>2017-10-18T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-10-18:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.2"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.6.2&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/6_6_2/changes/Changes.html"&gt;https://lucene.apache.org/core/6_6_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;This release includes a critical security fix. Details:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Disallow resolving of external entities in queryparser/xml/CoreParser by default.&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.1.0 available</title><link href="/" rel="alternate"></link><published>2017-10-17T00:00:00+00:00</published><updated>2017-10-17T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-10-17:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.1.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.1.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/7.1.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/7.1.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_1_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_1_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-710-release-highlights"&gt;Lucene 7.1.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;New Geo3D shapes for non-spherical planet models&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Serialization and deserialization support for Geo3D&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new CoveringQuery, whose required number of matching clauses can be defined per document&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;New BengaliAnalyzer for Bengali language&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A point based range field called LatLonBoundingBox&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;FloatPointNearestNeighbor, an N-dimensional FloatPoint K-nearest-neighbor search implementation&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Faster default taxonomy cache&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Support for computing facet counts for individual numeric values via LongValueFacetCounts&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Faster geo-distance queries in case of dense single-valued fields when most documents match&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Better heuristics in IndexOrDocValuesQuery&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Optimized builds for OrdinalMap (used by SortedSetDocValuesFacetCounts and others)&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Please secure your Apache Solr servers since a zero-day exploit has been reported on a public mailing list</title><link href="/" rel="alternate"></link><published>2017-10-12T00:00:00+00:00</published><updated>2017-10-12T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-10-12:/</id><summary type="html">&lt;p&gt;Please secure your Solr servers since a zero-day exploit has been
-reported on a &lt;a href="https://s.apache.org/FJDl"&gt;public mailing list&lt;/a&gt;.
-This has been assigned a public CVE (CVE-2017-12629) which we
-will reference in future communication about resolution and mitigation
-steps.&lt;/p&gt;
-&lt;p&gt;Here is what we're recommending and what we're doing now:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Until fixes are …&lt;/p&gt;&lt;/li&gt;&lt;/ul&gt;</summary><content type="html">&lt;p&gt;Please secure your Solr servers since a zero-day exploit has been
-reported on a &lt;a href="https://s.apache.org/FJDl"&gt;public mailing list&lt;/a&gt;.
-This has been assigned a public CVE (CVE-2017-12629) which we
-will reference in future communication about resolution and mitigation
-steps.&lt;/p&gt;
-&lt;p&gt;Here is what we're recommending and what we're doing now:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Until fixes are available, all Solr users are advised to restart their
-Solr instances with the system parameter &lt;code&gt;-Ddisable.configEdit=true&lt;/code&gt;.
-This will disallow any changes to be made to configurations via the
-Config API. This is a key factor in this vulnerability, since it allows
-GET requests to add the RunExecutableListener to the config. This is
-sufficient to protect you from this type of attack, but means you cannot
-use the edit capabilities of the Config API until the other fixes
-described below are in place. Users are also advised to remap
-the XML Query Parser to another parser to mitigate the XXE
-vulnerability. For example, adding the following to the solrconfig.xml
-file maps the &lt;code&gt;xmlparser&lt;/code&gt; to the &lt;code&gt;edismax&lt;/code&gt; parser:
-&lt;code&gt;&amp;lt;queryParser name="xmlparser" class="solr.ExtendedDismaxQParserPlugin"/&amp;gt;&lt;/code&gt;.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new release of Lucene/Solr was in the vote phase, but we have now
-pulled it back to be able to address these issues in the upcoming 7.1
-release. We will also determine mitigation steps for users on earlier
-versions, which may include a 6.6.2 release for users still on 6.x.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The RunExecutableListener will be removed in 7.1. It was previously
-used by Solr for index replication but has been replaced and is no
-longer needed.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The XML Parser will be fixed and the fixes will be included in the 7.1
-release.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The 7.1 release was already slated to include a change to disable the
-&lt;code&gt;stream.body&lt;/code&gt; parameter by default, which will further help protect
-systems.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="news"></category></entry><entry><title>Apache Lucene™ 7.0.1 available</title><link href="/" rel="alternate"></link><published>2017-10-06T00:00:00+00:00</published><updated>2017-10-06T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-10-06:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.0.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 1 bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.0.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 1 bug fix since the 7.0.0 release:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;ConjunctionScorer.getChildren was failing to return all child scorers&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/7.0.1"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/7.0.1&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_0_1/changes/Changes.html"&gt;https://lucene.apache.org/core/7_0_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.0.0 available</title><link href="/" rel="alternate"></link><published>2017-09-20T00:00:00+00:00</published><updated>2017-09-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-09-20:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.0.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/7.0.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/7.0.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_0_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_0_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-700-release-highlights"&gt;Lucene 7.0.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Doc values switched from random access to iterators.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The 7.0 codec now sparsely encodes sparse doc values and length normalization factors ("norms"), which also translates to optimization in both indexing, and search on sparse values. With these changes, you finally only pay for what you actually use with doc values, in index size, indexing performance, etc.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Index time boost for documents is now removed.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Substantial performance gains for delete and update heavy Lucene usage; see http://blog.mikemccandless.com/2017/07/lucene-gets-concurrent-deletes-and.html for details&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Query scoring is now simpler with removal of coord factor, and query normalization.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Classic query parser no longer splits on whitespaces.  This enables better multi-word synonym support.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The version of Lucene that created the index segment would be recorded, along with the version that last modified the index.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;IndexWriter, used to add, update and delete documents in your index, will no longer accept broken token offsets sometimes produced by mis-behaving token filters.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;IndexReader exposes methods that are typically used to manage resources whose lifetime needs to mimic the lifetime of segments/indexes, typically caches. They have been made much less trappy.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The dimensional points API now takes a field name up front to offer per-field points access, matching how the doc values APIs work.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The PostingsHighlighter was removed.  Migrating to the UnifiedHighlighter should be straight-forward.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Apache Lucene was tested to be fully compatible with the release of Java 9 and its module system Jigsaw, coming out tomorrow on September 21st!&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.6.1 available</title><link href="/" rel="alternate"></link><published>2017-09-07T00:00:00+00:00</published><updated>2017-09-07T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-09-07:/</id><summary type=" [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.1"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.6.1&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_6_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;p&gt;This release contains 2 bug fixes since the 6.6.0 release:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Documents with multiple points that should match might not match on a memory index&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A query which has only one synonym with AND as the default operator would
-   wrongly translate as an AND between the query term and the synonym&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.6.0 available</title><link href="/" rel="alternate"></link><published>2017-06-06T00:00:00+00:00</published><updated>2017-06-06T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-06-06:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.6.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_6_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;A concurrent SortedSet facets implementation&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;spatial-extras HeatmapFacetCounter will now short-circuit it's work when Bits.MatchNoBits is passed&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;OfflineSorter now passes the total number of items it will write to getWriter()&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Move dictionary for Ukrainian analyzer to external dependency&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;SortedSetDocValuesReaderState now implements Accountable so one can see how much RAM it is using&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;OfflineSorter can now run concurrently if you pass it an optional ExecutorService Sorted set facets now
-use sparse storage when collecting hits, when appropriate&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;PostingsHighlighter has been deprecated in favour of the UnifiedHighlighter&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.5.1 available</title><link href="/" rel="alternate"></link><published>2017-04-27T00:00:00+00:00</published><updated>2017-04-27T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-04-27:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.5.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.5.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.5.1"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.5.1&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_5_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;p&gt;This release contains 3 bug fixes since the 6.5.0 release:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Fixed join queries to not reference IndexReaders, as it could cause leaks if they are cached.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Made LRUQueryCache delegate the scoreSupplier method.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Fixed index sorting to work with sparse numeric and binary docvalues field&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 6.5.0 available</title><link href="/" rel="alternate"></link><published>2017-04-06T00:00:00+00:00</published><updated>2017-04-06T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-04-06:/</id><summary type="html">&lt;p&gt;PyLucene is now supported with both Python 2 and Python 3.
-JCC 3.0 introduces Python 3 support and remains compatible with Python 2.&lt;/p&gt;
-&lt;p&gt;This release tracks Lucene Core's recent 6.5.0 &lt;a href="https://lucene.apache.org/core/corenews.html"&gt;release&lt;/a&gt;.&lt;br/&gt;
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_6_5_0/CHANGES"&gt;PyLucene 6.5.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_6_5_0/jcc/CHANGES"&gt;JCC 3.0 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are …&lt;/p&gt;</summary><content type="html">&lt;p&gt;PyLucene is now supported with both Python 2 and Python 3.
-JCC 3.0 introduces Python 3 support and remains compatible with Python 2.&lt;/p&gt;
-&lt;p&gt;This release tracks Lucene Core's recent 6.5.0 &lt;a href="https://lucene.apache.org/core/corenews.html"&gt;release&lt;/a&gt;.&lt;br/&gt;
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_6_5_0/CHANGES"&gt;PyLucene 6.5.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_6_5_0/jcc/CHANGES"&gt;JCC 3.0 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 6.5.0 available</title><link href="/" rel="alternate"></link><published>2017-03-27T00:00:00+00:00</published><updated>2017-03-27T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-03-27:/</id><summary type="html">&lt;p&gt;The Luc [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.5.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.5.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.5.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_5_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;It is now possible filter out duplicates in the NRT suggester&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;SimpleQueryString now supports default fuziness&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;IndexWriter can return the list of visible field names&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;DisjunctionScorer now supports returning the matching children clauses&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new FunctionScoreQuery that modifies the internal query's score using the per-document values&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new FunctionMatchQuery that returns any documents with a value that matches a predicate&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new WordDelimiterGraphFilter that outputs a correct graph structure for multi-token expansion at query time&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new PatternTokenizer that uses Lucene's RegExp implementation&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;RangeFieldQuery now supports CROSSES relation&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new IndexOrDocValuesQuery that uses either an index (points or terms) or doc values in order to run a (range, geo box and distance) query, depending which one is more efficient&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;index-time boosts are deprecated&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Term filters are no longer cached&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Compound filters are cached earlier than regular queries&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;BKDReader now calls grow on larger increments&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;LatLonPointInPolygonQuery are faster&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;LatLonPointDistanceQuery now skips distance computations more often&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;To-parent block joins now implements two-phase iteration&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Point ranges that match most documents are faster&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;PointValues#estimatePointCount is faster with Relation.CELL_INSIDE_QUERY&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Segments are now also sorted during flush, and merging on a sorted index is substantially faster by using some of the same bulk merge optimizations that non-sorted merging uses&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 6.4.2 and Apache Solr 6.4.2 Available</title><link href="/" rel="alternate"></link><published>2017-03-07T00:00:00+00:00</published><updated>2017-03-07T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-03-07:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.2&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.2&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.4.2"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.4.2&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_4_2/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Fixed: CommonGramsQueryFilter was producing a disconnected token graph, messing up phrase queries during query parsing&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 5.5.4 available</title><link href="/" rel="alternate"></link><published>2017-02-15T00:00:00+00:00</published><updated>2017-02-15T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-02-15:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.4&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.4&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.5.4"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/5.5.4&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/5_5_4/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Made stored fields reclaim native memory more aggressively&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Fixed a potential memory leak with LRUQueryCache and (Span)TermQuery&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;MmapDirectory's unmapping code is now compatible with Java 9 (EA build 150 and later)&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 6.4.1 available</title><link href="/" rel="alternate"></link><published>2017-02-14T00:00:00+00:00</published><updated>2017-02-14T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-02-14:/</id><content type="html">&lt;p&gt;This release tracks Lucene Core's recent 6.4.1 &lt;a href="https://lucene.apache.org/core/corenews.html"&gt;release&lt;/a&gt;.&lt;br/&gt;
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_6_4_1/CHANGES"&gt;PyLucene 6.4.1 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_6_4_1/jcc/CHANGES"&gt;JCC 2.23 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene™ 6.4.1 available</title><link href="/" rel="alternate"></link><published>2017-02-06T00:00:00+00:00</published><updated>2017-02-06T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-02-06:/</id><summary type="html">&lt;p&gt;The Luc [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-TThe release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.4.1"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.4.1&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_4_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Javadocs now build successfully with Java 8u121&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Fixed memory leak in the case that TermQuery or SpanTermQuery objects that wrap a TermContext were cached&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Fixed native memory leak when the codec is configured with the BEST_COMPRESSION option&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;AnalyzingInfixSuggester now only opens an IndexWriter when changes need to be applied&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.4.0 available</title><link href="/" rel="alternate"></link><published>2017-01-23T00:00:00+00:00</published><updated>2017-01-23T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-01-23:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.4.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.4.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_4_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Lucene's best efforts to un-map memory mapped files with "MMapDirectory" now work with the latest Java9 early access builds&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new similarity "BooleanSimilarity" that gives terms a score that is equal to their query boost&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The axiomatic family of similarities (6 in total) based on https://www.eecis.udel.edu/~hfang/pubs/sigir05-axiom.pdf&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new token filter "SynonymGraphFilter" that outputs a correct graph structure for multi-token synonyms at query time&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Graph token streams, such as those produced by the "SynonymGraphFilter", are now handled accurately by query parsers&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new collector "DocValuesStatsCollector" gives the ability to compute statistics on DocValues field&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;It is now possible to filter "SortedDocValues" and "SortedSetDocValues" terms enum with a compiled automaton&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The "UnifiedHighlighter" can now highlight fields with queries that don't necessarily refer to that field&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;DrillSideways can now run queries concurrently&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Index sorting now supports sorting on multi-valued fields using MIN, MAX, etc. selectors&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Points do not store the implicit split dimension in the 1-dimension case. This saves between 6% memory for the largest types such an InetAddressPoint to 33% for the smaller types such as HalfFloatPoint.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The BKD in-memory index for dimensional points now uses a compressed format, using substantially less RAM in some cases&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The BKD writing now buffers each leaf block in heap before writing to disk, giving a small speedup in points-heavy use cases&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;"TermAutomatonQuery" now rewrites to more efficient queries when possible&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please note, this release cannot be built from source with Java 8 update 121,
-use an earlier version instead! This is caused by a bug introduced into the
-Javadocs tool shipped with that update. The workaround was too late for this
-Lucene release. Of course, you can use the binary artifacts.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.3.0 available</title><link href="/" rel="alternate"></link><published>2016-11-08T00:00:00+00:00</published><updated>2016-11-08T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2016-11-08:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.3.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.3.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.3.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.3.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_3_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;A brand new "UnifiedHighlighter" derivative of the PostingsHighlighter that can consume offsets from postings, term vectors, or analysis. It can highlight phrases as accurately as the standard Highlighter. Light term vectors can be used with offsets in postings for fast wildcard (MultiTermQuery) highlighting.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;SimpleQueryParser now parses '*' to MatchAllDocsQuery&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;FuzzyQuery now matches all terms within the specified edit distance, even if they are short terms&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Points do not store the implicit split dimension in the 1-dimension case. This saves between 6% memory for the largest types such an InetAddressPoint to 33% for the smaller types such as HalfFloatPoint.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Many other changes and bug fixes&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.2.1 available</title><link href="/" rel="alternate"></link><published>2016-09-20T00:00:00+00:00</published><updated>2016-09-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2016-09-20:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.2.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include …&lt;/h3&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.2.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;LUCENE-7417: The standard Highlighter could throw an !IllegalArgumentException when trying to highlight a query containing a degenerate case of a !MultiPhraseQuery with one term.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;LUCENE-7440: Document id skipping (!PostingsEnum.advance) could throw an !ArrayIndexOutOfBoundsException exception on large index segments (&amp;gt;1.8B docs) with large skips.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;LUCENE-7318: Fix backwards compatibility issues around StandardAnalyzer and its components, introduced with Lucene 6.2.0. The moved classes were restored in their original packages: LowercaseFilter and StopFilter, as well as several utility classes.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.2.1"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.2.1&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_2_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 6.2.0 available</title><link href="/" rel="alternate"></link><published>2016-09-18T00:00:00+00:00</published><updated>2016-09-18T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2016-09-18:/</id><content type="html">&lt;p&gt;This release tracks Lucene Core's recent 6.2.0 &lt;a href="https://lucene.apache.org/cor [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_6_2_0/CHANGES"&gt;PyLucene 6.2.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_6_2_0/jcc/CHANGES"&gt;JCC 2.22 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene 5.5.3 available</title><link href="/" rel="alternate"></link><published>2016-09-09T00:00:00+00:00</published><updated>2016-09-09T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2016-09-09:/</id><summary type="html">&lt;p&gt;The Luce [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.3&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.5.3"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/5.5.3&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/5_5_3/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 6.2.0 available</title><link href="/" rel="alternate"></link><published>2016-08-25T00:00:00+00:00</published><updated>2016-08-25T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2016-08-25:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.2.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.2.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:
-  https://lucene.apache.org/core/6_2_0/changes/Changes.html&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;The CREATE_NEW flag is passed when creating a file to ensure Lucene is really write-once&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Index numeric ranges (min and max value in a single field) and search by overlapping range&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;IndexWriter methods return a sequence number indicating effective order of operations across threads&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;UkrainianMorfologikAnalyzer is a new dictionary based analyzer for the Ukrainian language&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The Polygon class can now be created from a GeoJSON string&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Compound file creation now verifies checksum of its component files&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Index time sorting is now a core feature, and supports dimensional points&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;StandardAnalyzer is moved to core and is the default analyzer&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;MatchNoDocsQuery now includes the reason it was created&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;QueryParser can now be told to not pre-split on whitespace&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;MMapDirectory tries harder to prevent SIGSEGV if buggy code tries to execute
-    searches after the index was closed, but it's still best effort&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;MMapDirectory no longer allocates weak references to ease garbage collection&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Conjunction (MUST, FILTER) queries are faster&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Dimensional points have much faster (~40%) flush time and use less space in the index&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 5.5.2 available</title><link href="/" rel="alternate"></link><published>2016-06-25T00:00:00+00:00</published><updated>2016-06-25T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2016-06-25:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.2&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 11 bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.2&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 11 bug fixes since the 5.5.1 release.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.5.2"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/5.5.2&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/5_5_2/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 6.1.0 available</title><link href="/" rel="alternate"></link><published>2016-06-17T00:00:00+00:00</published><updated>2016-06-17T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2016-06-17:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.1.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.1.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:
-  https://lucene.apache.org/core/6_1_0/changes/Changes.html&lt;/p&gt;
-&lt;p&gt;Lucene 6.1.0 Release Highlights:&lt;/p&gt;
-&lt;p&gt;New features&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Numerous improvements to LatLonPoint, for indexing a latitude/longitude point and searching by polygon, distance or box, or finding nearest neighbors&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Geo3D now has simple APIs for creating common shape queries, matching LatLonPoint&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Optimizations&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Faster indexing and searching of points.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Faster geo-spatial indexing and searching for LatLonPoint, Geo3D and GeoPoint (see http://home.apache.org/~mikemccand/geobench.html )&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;HardlinkCopyDirectoryWrapper optimizes file copies using hard links&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;In case of contention, the query cache now prefers returning an uncached Scorer rather than waiting on a lock.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Bug fixes&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;BooleanQuery could sometimes assign too low scores to ranges of documents that matched a single clause.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Doc values updates could sometimes be applied in the wrong order.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 6.0.1 available</title><link href="/" rel="alternate"></link><published>2016-05-28T00:00:00+00:00</published><updated>2016-05-28T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2016-05-28:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.0.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 10 bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.0.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 10 bug fixes since the 6.0.0 release, and one new feature:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Spatial-extras DateRangePrefixTree's Calendar is now configurable, to e.g. clear the Gregorian Change Date. Also, toString(cal) is now identical to DateTimeFormatter.ISO_INSTANT.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.0.1"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.0.1&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_0_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 5.5.1 Available</title><link href="/" rel="alternate"></link><published>2016-05-05T00:00:00+00:00</published><updated>2016-05-05T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2016-05-05:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix since the 5.5.0 release. The release
-is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/core/5.5.1"&gt;https://www.apache.org/dyn/closer.lua/lucene/core/5.5.1&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/5_5_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 6.0.0 Available</title><link href="/" rel="alternate"></link><published>2016-04-08T00:00:00+00:00</published><updated>2016-04-08T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2016-04-08:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.0.0.&lt;/p&gt;
-&lt;p&gt;The release can be downloaded from &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Release Highlights:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Java 8 is the minimum Java version required.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Dimensional points, replacing legacy numeric fields, provides fast and space-efficient support for …&lt;/p&gt;&lt;/li&gt;&lt;/ul&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.0.0.&lt;/p&gt;
-&lt;p&gt;The release can be downloaded from &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Release Highlights:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Java 8 is the minimum Java version required.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Dimensional points, replacing legacy numeric fields, provides fast and space-efficient support for both single- and multi-dimension range and shape filtering.  This includes numeric (int, float, long, double), InetAddress, BigInteger and binary range filtering, as well as geo-spatial shape search over indexed 2D LatLonPoints.  See &lt;a href="https://www.elastic.co/blog/lucene-points-6.0"&gt;this blog post&lt;/a&gt; for details.  Dependent classes and modules (e.g., MemoryIndex, [...]
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Lucene classification module now works on Lucene Documents using a KNearestNeighborClassifier or SimpleNaiveBayesClassifier.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The spatial module no longer depends on third-party libraries. Previous spatial classes have been moved to a new spatial-extras module.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Spatial4j has been updated to a new 0.6 version hosted by locationtech.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;TermsQuery performance boost by a more aggressive default query caching policy.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;IndexSearcher's default Similarity is now changed to BM25Similarity.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Easier method of defining custom CharTokenizer instances.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 5.5.0 Available</title><link href="/" rel="alternate"></link><published>2016-02-22T00:00:00+00:00</published><updated>2016-02-22T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2016-02-22:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.0&lt;/p&gt;
-&lt;p&gt;The release can be downloaded from &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Release highlights:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;JoinUtil.createJoinQuery can now join on numeric doc values fields&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;BlendedInfixSuggester now has an exponential reciprocal scoring model, to more …&lt;/p&gt;&lt;/li&gt;&lt;/ul&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.0&lt;/p&gt;
-&lt;p&gt;The release can be downloaded from &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Release highlights:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;JoinUtil.createJoinQuery can now join on numeric doc values fields&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;BlendedInfixSuggester now has an exponential reciprocal scoring model, to more strongly favor suggestions with matches closer to the beginning&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;CustomAnalyzer has improved (compile time) type safety&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;DFISimilarity implements the divergence from independence scoring model&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Fully wrap any other merge policy using MergePolicyWrapper&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Sandbox geo point queries have graduated into the spatial module, and now use a more efficient binary term encoding for smaller index size, faster indexing, and decreased search-time heap usage&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;BooleanQuery performs some new query optimizations&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;TermsQuery constructors are more GC efficient&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 5.3.2 Available</title><link href="/" rel="alternate"></link><published>2016-01-23T00:00:00+00:00</published><updated>2016-01-23T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2016-01-23:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.3.2&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.3.2&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix since the 5.3.1 release. The release
-is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/core/5.3.2"&gt;https://www.apache.org/dyn/closer.lua/lucene/core/5.3.2&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/5_3_2/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 5.4.1 Available</title><link href="/" rel="alternate"></link><published>2016-01-23T00:00:00+00:00</published><updated>2016-01-23T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2016-01-23:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.4.1&lt;/p&gt;
-&lt;p&gt;The release can be downloaded from &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;This release contains an important fix for a corruption bug that was
-introduced in version 5.4.0. If you are on …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.4.1&lt;/p&gt;
-&lt;p&gt;The release can be downloaded from &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;This release contains an important fix for a corruption bug that was
-introduced in version 5.4.0. If you are on 5.4.0 and using BINARY,
-SORTED_NUMERIC or SORTED_SET doc values, upgrading to 5.4.1 is strongly
-recommended.&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/5_4_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 5.4.0 Available</title><link href="/" rel="alternate"></link><published>2015-12-14T00:00:00+00:00</published><updated>2015-12-14T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2015-12-14:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.4.0&lt;/p&gt;
-&lt;p&gt;The release can be downloaded from &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;h4 id="api-changes"&gt;API Changes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Query.getBoost and Query.setBoost are deprecated in favour of the new BoostQuery&lt;/li&gt;
-&lt;li&gt;The …&lt;/li&gt;&lt;/ul&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.4.0&lt;/p&gt;
-&lt;p&gt;The release can be downloaded from &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;h4 id="api-changes"&gt;API Changes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Query.getBoost and Query.setBoost are deprecated in favour of the new BoostQuery&lt;/li&gt;
-&lt;li&gt;The Filter class is deprecated in favour of FILTER clauses in a BooleanQuery&lt;/li&gt;
-&lt;li&gt;DefaultSimilarity has been renamed to ClassicSimilarity to prepare for the move to BM25 in Lucene 6&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;New Serbian token filter&lt;/li&gt;
-&lt;li&gt;New DecimalDigitFilter, to fold unicode digits to latin digits&lt;/li&gt;
-&lt;li&gt;New UnicodeWhitespaceTokenizer, that uses Unicode's whitespace definition and splits on NBSP&lt;/li&gt;
-&lt;li&gt;New GeoPointDistanceRangeQuery to search for geo-points within a ring&lt;/li&gt;
-&lt;li&gt;Query caching is now enabled by default in IndexSearcher, use IndexSearcher.setQueryCache(null) to disable&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;MatchAllDocsQuery got faster&lt;/li&gt;
-&lt;li&gt;Doc values now use less memory for multi-valued fields and less disk in case of sparse fields&lt;/li&gt;
-&lt;li&gt;Two-phase iterators got a match cost API so that the costly bits can be checked last&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;PatternTokenizer no longer hangs onto heap sized to the maximum input string it's ever seen.&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 5.3.1 and Apache Solr 5.3.1 Available</title><link href="/" rel="alternate"></link><published>2015-09-24T00:00:00+00:00</published><updated>2015-09-24T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2015-09-24:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.3.1&lt;/p&gt;
-&lt;p&gt;The release can be downloaded from &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;h4 id="bug-fixes"&gt;Bug Fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Remove classloader hack in MorfologikFilter&lt;/li&gt;
-&lt;li&gt;UsageTrackingQueryCachingPolicy no longer caches trivial queries like MatchAllDocsQuery&lt;/li&gt;
-&lt;li&gt;Fixed …&lt;/li&gt;&lt;/ul&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.3.1&lt;/p&gt;
-&lt;p&gt;The release can be downloaded from &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;h4 id="bug-fixes"&gt;Bug Fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Remove classloader hack in MorfologikFilter&lt;/li&gt;
-&lt;li&gt;UsageTrackingQueryCachingPolicy no longer caches trivial queries like MatchAllDocsQuery&lt;/li&gt;
-&lt;li&gt;Fixed BoostingQuery to rewrite wrapped queries&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 5.3.0 available</title><link href="/" rel="alternate"></link><published>2015-08-24T00:00:00+00:00</published><updated>2015-08-24T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2015-08-24:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.3.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.3.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:
- &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.3.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/5.3.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/p&gt;
-&lt;h3 id="lucene-530-release-highlights"&gt;Lucene 5.3.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="api-changes"&gt;API Changes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;PhraseQuery and BooleanQuery are now immutable&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Added a new org.apache.lucene.search.join.CheckJoinIndex class that can be used to validate that an index has an appropriate structure to run join queries&lt;/li&gt;
-&lt;li&gt;Added a new BlendedTermQuery to blend statistics across several terms&lt;/li&gt;
-&lt;li&gt;New common suggest API that mirrors Lucene's Query/IndexSearcher APIs for Document based suggester.&lt;/li&gt;
-&lt;li&gt;IndexWriter can now be initialized from an already open near-real-time or non-NRT reader&lt;/li&gt;
-&lt;li&gt;Add experimental range tree doc values format and queries, based on a 1D version of the spatial BKD tree, for a faster and smaller alternative to postings-based numeric and binary term filtering.  Range trees can also handle values larger than 64 bits.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="geo-related-features-and-improvements"&gt;Geo-related features and improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Added GeoPointField, GeoPointInBBoxQuery, GeoPointInPolygonQuery for simple "indexed lat/lon point in bbox/shape" searching&lt;/li&gt;
-&lt;li&gt;Added experimental BKD geospatial tree doc values format and queries, for fast "bbox/polygon contains lat/lon points"&lt;/li&gt;
-&lt;li&gt;Use doc values to post-filter GeoPointField hits that fall in boundary cells, resulting in smaller index, faster searches and less heap used for each query&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Reduce RAM usage of FieldInfos, and speed up lookup by number, by using an array instead of TreeMap except in very sparse cases&lt;/li&gt;
-&lt;li&gt;Faster intersection of the terms dictionary with very finite automata, which can be generated eg. by simple regexp queries&lt;/li&gt;
-&lt;li&gt;Various bugfixes and optimizations since the 5.2.0 release.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;See the &lt;a href="/core/5_3_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 5.2.1 available</title><link href="/" rel="alternate"></link><published>2015-06-15T00:00:00+00:00</published><updated>2015-06-15T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2015-06-15:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.2.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains various bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.2.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains various bug fixes and optimizations since the 5.2.0 release.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:
- &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.2.1"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/5.2.1&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 5.2.1 includes 3 bug fixes:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix class loading deadlock relating to Codec initialization, default codec and SPI discovery.&lt;/li&gt;
-&lt;li&gt;NRT readers now reflect a new commit even if there is no change to the commit user data&lt;/li&gt;
-&lt;li&gt;Queries now get a dummy Similarity when scores are not needed in order to not load unnecessary information like norms&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;See the &lt;a href="/core/5_2_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Lucene Core 5.2.0 Available</title><link href="/" rel="alternate"></link><published>2015-06-07T00:00:00+00:00</published><updated>2015-06-07T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2015-06-07:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.2.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.2.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:
- &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.2.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/5.2.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 5.2.0 release highlights:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Span queries now share document conjunction/intersection code with boolean queries, and use two-phased iterators for faster intersection by avoiding loading positions in certain cases.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Added two-phase support to SpanNotQuery, and SpanPositionCheckQuery and its subclasses: SpanPositionRangeQuery, SpanPayloadCheckQuery, SpanNearPayloadCheckQuery, SpanFirstQuery.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Added a new query time join to the join module that uses global ordinals, which is faster for subsequent joins between reopens.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;New CompositeSpatialStrategy combines speed of RPT with accuracy of SDV. Includes optimized Intersect predicate to avoid many geometry checks. Uses TwoPhaseIterator.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;New LimitTokenOffsetFilter that limits tokens to those before a configured maximum start offset.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;New spatial PackedQuadPrefixTree, a generally more efficient choice than QuadPrefixTree, especially for high precision shapes. When used, you should typically disable RPT's pruneLeafyBranches option.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Expressions now support bindings keys that look like zero arg functions&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Add SpanWithinQuery and SpanContainingQuery that return spans inside of / containing another spans.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;New Spatial "Geo3d" API with partial Spatial4j integration. It is a set of shapes implemented using 3D planar geometry for calculating spatial relations on the surface of a sphere. Shapes include Point, BBox, Circle, Path (buffered line string), and Polygon.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Various bugfixes and optimizations since the 5.1.0 release.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;See the &lt;a href="/core/5_2_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Lucene Core 5.1.0 Available</title><link href="/" rel="alternate"></link><published>2015-04-14T00:00:00+00:00</published><updated>2015-04-14T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2015-04-14:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.1.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.1.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:
- &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.1.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/5.1.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 5.1.0 includes 9 new features, 10 bug fixes, and 24 optimizations / other
-changes from 18 unique contributors.&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/5_1_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Lucene Core 4.10.4 Available</title><link href="/" rel="alternate"></link><published>2015-03-05T00:00:00+00:00</published><updated>2015-03-05T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2015-03-05:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.10.4&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.10.4&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:
- &lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/4.10.4"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/4.10.4&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 4.10.4 includes 13 bug fixes.&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/4_10_4/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Lucene™ 5.0.0 core available</title><link href="/" rel="alternate"></link><published>2015-02-20T00:00:00+00:00</published><updated>2015-02-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2015-02-20:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-&lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 5.0 Release Highlights:&lt;/p&gt;
-&lt;p&gt;Stronger index safety&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;All file access now uses Java’s NIO.2 APIs which give Lucene stronger index safety in terms of better error handling and safer commits.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Every Lucene segment now stores a unique id per-segment and per-commit to aid in accurate replication of index files.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;During merging, IndexWriter now always checks the incoming segments for corruption before merging. This can mean, on upgrading to 5.0.0, that merging may uncover long-standing latent corruption in an older 4.x index.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Reduced heap usage&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Lucene now supports random-writable and advance-able sparse bitsets (RoaringDocIdSet and SparseFixedBitSet), so the heap required is in proportion to how many bits are set, not how many total documents exist in the index.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Heap usage during IndexWriter merging is also much lower with the new Lucene50Codec, since doc values and norms for the segments being merged are no longer fully loaded into heap for all fields; now they are loaded for the one field currently being merged, and then dropped.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The default norms format now uses sparse encoding when appropriate, so indices that enable norms for many sparse fields will see a large reduction in required heap at search time.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;5.0 has a new API to print a tree structure showing a recursive breakdown of which parts are using how much heap.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Other features&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;FieldCache is gone (moved to a dedicated UninvertingReader in the misc module). This means when you intend to sort on a field, you should index that field using doc values, which is much faster and less heap consuming than FieldCache.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Tokenizers and Analyzers no longer require Reader on init.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;NormsFormat now gets its own dedicated NormsConsumer/Producer&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;SortedSetSortField, used to sort on a multi-valued field, is promoted from sandbox to Lucene's core.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;PostingsFormat now uses a "pull" API when writing postings, just like doc values. This is powerful because you can do things in your postings format that require making more than one pass through the postings such as iterating over all postings for each term to decide which compression format it should use.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;New DateRangeField type enables Indexing and searching of date ranges, particularly multi-valued ones.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new ExitableDirectoryReader extends FilterDirectoryReader and enables exiting requests that take too long to enumerate over terms.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Suggesters from multi-valued field can now be built as DocumentDictionary now enumerates each value separately in a multi-valued field.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;ConcurrentMergeScheduler detects whether the index is on SSD or not and does a better job defaulting its settings. This only works on Linux for now; other OS's will continue to use the previous defaults (tuned for spinning disks).&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Auto-IO-throttling has been added to ConcurrentMergeScheduler, to rate limit IO writes for each merge depending on incoming merge rate.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;CustomAnalyzer has been added that allows to configure analyzers like you do in Solr's index schema. This class has a builder API to configure Tokenizers, TokenFilters, and CharFilters based on their SPI names and parameters as documented by the corresponding factories.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Memory index now supports payloads.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Added a filter cache with a usage tracking policy that caches filters based on frequency of use.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The default codec has an option to control BEST_SPEED or BEST_COMPRESSION for stored fields.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Stored fields are merged more efficiently, especially when upgrading from previous versions or using SortingMergePolicy&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;NOTE: Lucene 5 no longer supports the Lucene 3.x index format. Opening indexes will result in IndexFormatTooOldException. It is recommended to either reindex all your data, or upgrade the old indexes with the IndexUpgrader tool of latest Lucene 4 version (4.10.x). Those indexes can then be read (see next section) with Lucene 5.&lt;/p&gt;
-&lt;p&gt;To read more about the changes, also see: &lt;a href="http://blog.mikemccandless.com/2014/11/apache-lucene-500-is-coming.html"&gt;http://blog.mikemccandless.com/2014/11/apache-lucene-500-is-coming.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read &lt;a href="/core/5_0_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; and MIGRATE.txt for a full list of new features and notes on upgrading.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Lucene Core 4.10.3 Available</title><link href="/" rel="alternate"></link><published>2014-12-29T00:00:00+00:00</published><updated>2014-12-29T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-12-29:/</id><summa [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.10.3&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:
- &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 4.10.3 includes 12 bug fixes.&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/4_10_3/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details, and Happy Holidays!&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Lucene Core 4.10.2 Available</title><link href="/" rel="alternate"></link><published>2014-10-31T00:00:00+00:00</published><updated>2014-10-31T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-10-31:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Luce [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.10.2&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:
- &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 4.10.2 includes 2 bug fixes.&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/4_10_2/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details, and Happy Halloween!&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 4.10.1-1 available</title><link href="/" rel="alternate"></link><published>2014-10-06T00:00:00+00:00</published><updated>2014-10-06T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-10-06:/</id><content type="html">&lt;p&gt;This release tracks Lucene Core's recent 4.10.1 &lt;a href="http [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_4_10_1/CHANGES"&gt;PyLucene 4.10.1 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.21 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Lucene Core 4.10.1 Available</title><link href="/" rel="alternate"></link><published>2014-09-29T00:00:00+00:00</published><updated>2014-09-29T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-09-29:/</id><summary type="html">&lt;p&gt;The Lucen [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.10.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:
- &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 4.10.1 includes 7 bug fixes.&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/4_10_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Lucene Core 4.9.1 Available</title><link href="/" rel="alternate"></link><published>2014-09-22T00:00:00+00:00</published><updated>2014-09-22T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-09-22:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.9.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.9.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:
- &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 4.9.1 includes 7 bug fixes.&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/4_9_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Lucene Core 4.10.0 Available</title><link href="/" rel="alternate"></link><published>2014-09-03T00:00:00+00:00</published><updated>2014-09-03T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-09-03:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.10.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.10.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/4_10_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the release for a full list of
-details.&lt;/p&gt;
-&lt;p&gt;Lucene 4.10.0 Release Highlights:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;New TermAutomatonQuery using an automaton for proximity queries.
-  &lt;a href="http://blog.mikemccandless.com/2014/08/a-new-proximity-query-for-lucene-using.html"&gt;http://blog.mikemccandless.com/2014/08/a-new-proximity-query-for-lucene-using.html&lt;/a&gt;&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;New OrdsBlockTree terms dictionary supporting ord lookup.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Simplified matchVersion handling for Analyzers with new setVersion method, as well as Analyzer constructors not requiring Version.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Fixed possible corruption when opening a 3.x index with NRT reader.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Fixed edge case in StandardTokenizer that caused extremely slow parsing times with long text which partially matched grammar rules.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Recommendation to update Apache POI in Apache Solr 4.8.0, 4.8.1, and 4.9.0 installations</title><link href="/" rel="alternate"></link><published>2014-08-18T00:00:00+00:00</published><updated>2014-08-18T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-08-18:/</id><summary type="html">&lt;p&gt;Apache Solr versions 4.8.0, 4.8.1, 4.9.0 bundle Apache POI 3.10-beta2 with its [...]
-This version (and all previous ones) of Apache POI are vulnerable to the following issues:
-CVE-2014-3529 &lt;em&gt;(XML External Entity (XXE) problem in Apache POI's OpenXML parser)&lt;/em&gt;,
-CVE-2014-3574 &lt;em&gt;(XML …&lt;/em&gt;&lt;/p&gt;</summary><content type="html">&lt;p&gt;Apache Solr versions 4.8.0, 4.8.1, 4.9.0 bundle Apache POI 3.10-beta2 with its binary release tarball.
-This version (and all previous ones) of Apache POI are vulnerable to the following issues:
-CVE-2014-3529 &lt;em&gt;(XML External Entity (XXE) problem in Apache POI's OpenXML parser)&lt;/em&gt;,
-CVE-2014-3574 &lt;em&gt;(XML Entity Expansion (XEE) problem in Apache POI's OpenXML parser)&lt;/em&gt;.&lt;/p&gt;
-&lt;p&gt;The Apache POI PMC released a bugfix version (3.10.1) today.&lt;/p&gt;
-&lt;p&gt;Solr users are affected by these issues, if they enable the "Apache Solr Content Extraction Library (Solr Cell)"
-contrib module from the folder "contrib/extraction" of the release tarball.&lt;/p&gt;
-&lt;p&gt;Users of Apache Solr are strongly advised to keep the module disabled if they don't use it.
-Alternatively, users of Apache Solr 4.8.0, 4.8.1, or 4.9.0 can update the affected libraries by
-replacing the vulnerable JAR files in the distribution folder. Users of previous versions have
-to update their Solr release first, patching older versions is impossible.&lt;/p&gt;
-&lt;p&gt;For detailed instructions, see &lt;a href="/solr/solrnews.html#18-august-2014-recommendation-to-update-apache-poi-in-apache-solr-480-481-and-490-installations"&gt;Solr's News&lt;/a&gt;&lt;/p&gt;</content><category term="news"></category></entry><entry><title>PyLucene 4.9.0-0 available</title><link href="/" rel="alternate"></link><published>2014-07-17T00:00:00+00:00</published><updated>2014-07-17T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None, [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_4_9_0/CHANGES"&gt;PyLucene 4.9.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.20 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Lucene Core 4.9.0 Available</title><link href="/" rel="alternate"></link><published>2014-06-25T00:00:00+00:00</published><updated>2014-06-25T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-06-25:/</id><summary type="html">&lt;p&gt;The Lucene [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.9.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/4_9_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the release for a full list of
-details.&lt;/p&gt;
-&lt;p&gt;Lucene 4.9.0 Release Highlights:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;New Terms.getMin/Max methods to retrieve the lowest and highest
-  terms per field.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;New IDVersionPostingsFormat, optimized for ID lookups that associate
-  a monotonically increasing version per ID.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Atomic update of a set of doc values fields.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Numerous optimizations for doc values search-time performance.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;New (default) Lucene49NormsFormat to better compress certain cases
-  such as very short fields.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;New SORTED_NUMERIC docvalues type for efficient processing of
-  multi-valued numeric fields.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Indexer passes previous token stream for easier reuse.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;MoreLikeThis accepts multiple values per field.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;All classes that estimate their RAM usage now implement a new
-  Accountable interface.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Lucene files are now written by (File)OutputStream on all platforms,
-  completely disallowing seeking with simplified IO APIs.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Improve the confusing error message when MMapDirectory cannot create
-  a new map.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Open Relevance sub-project closed</title><link href="/" rel="alternate"></link><published>2014-06-11T00:00:00+00:00</published><updated>2014-06-11T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-06-11:/</id><content type="html">&lt;p&gt;The Apache Lucene Project Management Committee decided in a vote,
-that the Apache Lucene sub-project "Open Relevance" will be discontinued. There was only modest activity during the last
-years and the project made no releases. Thank you to all committers for their support in this project!&lt;/p&gt;</content><category term="news"></category></entry><entry><title>Project closed</title><link href="/" rel="alternate"></link><published>2014-06-11T00:00:00+00:00</published><updated>2014-06-11T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-06-11:/</id><content type="html">&lt;p&gt;The Apache Lucene Project Management Committee decided i [...]
-that the Apache Lucene sub-project "Open Relevance" will be discontinued. There was only modest activity during the last
-years and the project made no releases. Thank you to all committers for their support in this project!&lt;/p&gt;</content><category term="openrelevance/news"></category></entry><entry><title>Lucene Core 4.8.1 Available</title><link href="/" rel="alternate"></link><published>2014-05-20T00:00:00+00:00</published><updated>2014-05-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-05-20:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to  [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.8.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:
- &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 4.8.1 includes 15 bug fixes.&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/4_8_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 4.8.0-1 available</title><link href="/" rel="alternate"></link><published>2014-05-03T00:00:00+00:00</published><updated>2014-05-03T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-05-03:/</id><summary type="html">&lt;p&gt;This release tracks Lucene Core's recent 4.8.0 &lt;a href="https://lucene.apache.org/c [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_4_8_0/CHANGES"&gt;PyLucene 4.8.0 CHANGES&lt;/a&gt; for details. The JCC version included with PyLucene 4.8.0 is unchanged at 2.19.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;
-&lt;b&gt;Attention:&lt;/b&gt; Starting with this release, Lucene requires Java 1.7 at the
-minimum …&lt;/p&gt;</summary><content type="html">&lt;p&gt;This release tracks Lucene Core's recent 4.8.0 &lt;a href="https://lucene.apache.org/core/corenews.html"&gt;release&lt;/a&gt;.&lt;br/&gt;
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_4_8_0/CHANGES"&gt;PyLucene 4.8.0 CHANGES&lt;/a&gt; for details. The JCC version included with PyLucene 4.8.0 is unchanged at 2.19.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;br/&gt;
-&lt;b&gt;Attention:&lt;/b&gt; Starting with this release, Lucene requires Java 1.7 at the
-minimum; Java 1.6 is no longer supported. After upgrading JDK, please be sure to
-rebuild JCC first with the new JDK.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Apache Lucene 4.8.0 Available</title><link href="/" rel="alternate"></link><published>2014-04-28T00:00:00+00:00</published><updated>2014-04-28T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-04-28:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.8.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.8.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/4_8_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included
-with the release for a full list of details.&lt;/p&gt;
-&lt;h3 id="lucene-480-release-highlights"&gt;Lucene 4.8.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Apache Lucene now requires Java 7 or greater (recommended is
-  Oracle Java 7 or OpenJDK 7, minimum update 55; earlier versions
-  have known JVM bugs affecting Lucene).&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Apache Lucene is fully compatible with Java 8.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;All index files now store end-to-end checksums, which are
-  now validated during merging and reading. This ensures that
-  corruptions caused by any bit-flipping hardware problems or bugs
-  in the JVM can be detected earlier.  For full detection be sure
-  to enable all checksums during merging (it's disabled by default).&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Lucene has a new Rescorer/QueryRescorer API to perform second-pass
-  rescoring or reranking of search results using more expensive scoring
-  functions after first-pass hit collection.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;AnalyzingInfixSuggester now supports near-real-time autosuggest.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Simplified impact-sorted postings (using SortingMergePolicy and
-  EarlyTerminatingCollector) to use Lucene's Sort class
-  to express the sort order.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Bulk scoring and normal iterator-based scoring were separated,
-  so some queries can do bulk scoring more effectively.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Switched to MurmurHash3 to hash terms during indexing.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;IndexWriter now supports updating of binary doc value fields.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;HunspellStemFilter now uses 10 to 100x less RAM. It also loads
-  all known OpenOffice dictionaries without error.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Lucene now also fsyncs the directory metadata on commits, if the
-  operating system and file system allow it (Linux, MacOSX are
-  known to work).&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Lucene now uses Java 7 file system functions under the hood,
-  so index files can be deleted on Windows, even when readers are
-  still open.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A serious bug in NativeFSLockFactory was fixed, which could
-  allow multiple IndexWriters to acquire the same lock.  The
-  lock file is no longer deleted from the index directory
-  even when the lock is not held.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Various bugfixes and optimizations since the 4.7.2 release.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 4.7.2-1 available</title><link href="/" rel="alternate"></link><published>2014-04-28T00:00:00+00:00</published><updated>2014-04-28T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-04-28:/</id><content type="html">&lt;p&gt;This release tracks Lucene Core's recent 4.7.2 &lt;a href="https://lucene.apache.org/core/corenews.html"&gt;release&lt;/a&gt;.&lt;br/&gt;
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_4_7_2/CHANGES"&gt;PyLucene 4.7.2 CHANGES&lt;/a&gt; for details. The JCC version included with PyLucene 4.7.2 is unchanged at 2.19.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Lucene Core 4.7.2 Available</title><link href="/" rel="alternate"></link><published>2014-04-15T00:00:00+00:00</published><updated>2014-04-15T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-04-15:/</id><summary type="html">&lt;p&gt;The Lucene PMC is ple [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.7.2&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:
- &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 4.7.2 includes 2 bug fixes, including a possible index corruption
-with near-realtime search.&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/4_7_2/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Lucene Core 4.7.1 Available</title><link href="/" rel="alternate"></link><published>2014-04-02T00:00:00+00:00</published><updated>2014-04-02T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-04-02:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.7.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.7.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:
- &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 4.7.1 includes 14 bug fixes; one build improvement; and one change in
-runtime behavior: AutomatonQuery.equals is no longer implemented as "accepts
-same language".&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/4_7_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 4.8 and Apache Solr 4.8 will require Java 7</title><link href="/" rel="alternate"></link><published>2014-03-12T00:00:00+00:00</published><updated>2014-03-12T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-03-12:/</id><summary type="html">&lt;p&gt;The Apache Lucene/Solr committers decided with a large  [...]
-&lt;p&gt;The next release will also contain some improvements for Java 7:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Better file handling (especially on Windows) in the …&lt;/p&gt;&lt;/li&gt;&lt;/ul&gt;</summary><content type="html">&lt;p&gt;The Apache Lucene/Solr committers decided with a large majority on the vote to require &lt;strong&gt;Java 7&lt;/strong&gt; for the next minor release of Apache Lucene and Apache Solr (version 4.8)!&lt;/p&gt;
-&lt;p&gt;The next release will also contain some improvements for Java 7:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Better file handling (especially on Windows) in the directory implementations. Files can now be deleted on windows, although the index is still open - like it was always possible on Unix environments (delete on last close semantics).&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Speed improvements in sorting comparators: Sorting now uses Java 7's own comparators for integer and long sorts, which are highly optimized by the Hotspot VM.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;If you want to stay up-to-date with Lucene and Solr, you should upgrade your infrastructure to Java 7.
-Please be aware that you must use at least use Java 7u1.
-The recommended version at the moment is Java 7u25. Later versions like 7u40, 7u45,... have a bug causing index corrumption.
-Ideally use the Java 7u60 prerelease, which has fixed this bug. Once 7u60 is out, this will be the recommended version.
-In addition, there is no more Oracle/BEA JRockit available for Java 7, use the official Oracle Java 7.
-JRockit was never working correctly with Lucene/Solr (causing index corrumption), so this should not be an issue.
-Please also review our list of JVM bugs: &lt;a href="http://wiki.apache.org/lucene-java/JavaBugs"&gt;http://wiki.apache.org/lucene-java/JavaBugs&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;&lt;em&gt;EDIT (as of 15 April 2014):&lt;/em&gt; The recently released Java 7u55 fixes the above bug causing index corrumption.
-This version is now the recommended version for running Apache Lucene and Solr.&lt;/p&gt;</content><category term="news"></category></entry><entry><title>Apache Lucene 4.8 will require Java 7</title><link href="/" rel="alternate"></link><published>2014-03-12T00:00:00+00:00</published><updated>2014-03-12T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-03-12:/</id><summary type="html">&lt;p&gt;The Apache Lucene committers decided with a large majori [...]
-&lt;p&gt;The next release will also contain some improvements for Java 7:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Better file handling (especially on Windows) in the directory implementations. Files can …&lt;/p&gt;&lt;/li&gt;&lt;/ul&gt;</summary><content type="html">&lt;p&gt;The Apache Lucene committers decided with a large majority on the vote to require &lt;strong&gt;Java 7&lt;/strong&gt; for the next minor release of Apache Lucene (version 4.8)!&lt;/p&gt;
-&lt;p&gt;The next release will also contain some improvements for Java 7:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Better file handling (especially on Windows) in the directory implementations. Files can now be deleted on windows, although the index is still open - like it was always possible on Unix environments (delete on last close semantics).&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Speed improvements in sorting comparators: Sorting now uses Java 7's own comparators for integer and long sorts, which are highly optimized by the Hotspot VM.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;If you want to stay up-to-date with Lucene and Solr, you should upgrade your infrastructure to Java 7.
-Please be aware that you must use at least use Java 7u1.
-The recommended version at the moment is Java 7u25. Later versions like 7u40, 7u45,... have a bug causing index corrumption.
-Ideally use the Java 7u60 prerelease, which has fixed this bug. Once 7u60 is out, this will be the recommended version.
-In addition, there is no more Oracle/BEA JRockit available for Java 7, use the official Oracle Java 7.
-JRockit was never working correctly with Lucene/Solr (causing index corrumption), so this should not be an issue.
-Please also review our list of JVM bugs: &lt;a href="http://wiki.apache.org/lucene-java/JavaBugs"&gt;http://wiki.apache.org/lucene-java/JavaBugs&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;&lt;em&gt;EDIT (as of 15 April 2014):&lt;/em&gt; The recently released Java 7u55 fixes the above bug causing index corrumption.
-This version is now the recommended version for running Apache Lucene.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Lucene Core 4.7 Available</title><link href="/" rel="alternate"></link><published>2014-02-26T00:00:00+00:00</published><updated>2014-02-26T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-02-26:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.7&l [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 4.7&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release
-is available for immediate download at:
-  &lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/4_7_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included
-with the release for a full list of details.&lt;/p&gt;
-&lt;h3 id="lucene-47-release-highlights"&gt;Lucene 4.7 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;When sorting by String (SortField.STRING), you can now specify whether missing values should be sorted first (the default), or last.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Add two memory resident dictionaries (FST terms dictionary and FSTOrd
-  terms dictionary) to improve primary key lookups. The
-  PostingsBaseFormat API is also changed so that term dictionaries get
-  the ability to block encode term metadata, and all dictionary
-  implementations can now plug in any PostingsBaseFormat.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;NRT support for file systems that do not have delete on last close or cannot delete while referenced semantics.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Add LongBitSet for managing more than 2.1B bits (otherwise use FixedBitSet).&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Speed up Lucene range faceting from O(N) per hit to O(log(N)) per hit using segment trees.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Add SearcherTaxonomyManager over search and taxonomy index directories
-  (i.e. not only NRT).&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Drilling down or sideways on a Lucene facet range (using
-  Range.getFilter()) is now faster for costly filters (uses random
-  access, not iteration); range facet counts now accept a fast-match
-  filter to avoid computing the value for documents that are out of
-  bounds, e.g. using a bounding box filter with distance range faceting.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Add Analyzer for Kurdish.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Add Payload support to FileDictionary (Suggest) and make it more configurable.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Add a new BlendedInfixSuggester, which is like AnalyzingInfixSuggester but boosts suggestions that matched tokens with lower positions.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Add SimpleQueryParser: parser for human-entered queries.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Add multitermquery (wildcards,prefix,etc) to PostingsHighlighter.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Upgrade to Spatial4j 0.4.1: Parses WKT (including ENVELOPE) with extension BUFFER; buffering a point results in a Circle. JTS isn't
-  needed for WKT any more but remains required for Polygons. New Shapes: ShapeCollection and BufferedLineString.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Add spatial SerializedDVStrategy that serializes a binary
-  representation of a shape into BinaryDocValues. It supports exact
-  geometry relationship calculations.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Various bugfixes and optimizations since the 4.6.1 release.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>PyLucene 4.6.1-1 available</title><link href="/" rel="alternate"></link><published>2014-02-13T00:00:00+00:00</published><updated>2014-02-13T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2014-02-13:/</id><content type="html">&lt;p&gt;This release tracks Lucene Core's recent 4.6.1 &lt;a href="https://lucene.apache.org/core/corenews.html"&gt;release&lt;/a&gt;.&lt;br/&gt;
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_4_6_1/CHANGES"&gt;PyLucene 4.6.1 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.19 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 4.5.1-1 available</title><link href="/" rel="alternate"></link><published>2013-11-04T00:00:00+00:00</published><updated>2013-11-04T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2013-11-04:/</id><content type="html">&lt;p&gt;This release tracks Lu [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_4_5_1/CHANGES"&gt;PyLucene 4.5.1 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.18 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 4.4.0-1 available</title><link href="/" rel="alternate"></link><published>2013-08-23T00:00:00+00:00</published><updated>2013-08-23T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2013-08-23:/</id><content type="html">&lt;p&gt;This release tracks Lu [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_4_4_0/CHANGES"&gt;PyLucene 4.4.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.17 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 4.3.0-1 available</title><link href="/" rel="alternate"></link><published>2013-05-14T00:00:00+00:00</published><updated>2013-05-14T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2013-05-14:/</id><content type="html">&lt;p&gt;This release tracks Lu [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_4_3_0/CHANGES"&gt;PyLucene 4.3.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.16 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 3.6.2-1 available</title><link href="/" rel="alternate"></link><published>2013-01-04T00:00:00+00:00</published><updated>2013-01-04T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2013-01-04:/</id><content type="html">&lt;p&gt;This release tracks Lu [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_6_2/CHANGES"&gt;PyLucene 3.6.2 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.15 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 3.6.1-2 available</title><link href="/" rel="alternate"></link><published>2012-08-24T00:00:00+00:00</published><updated>2012-08-24T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2012-08-24:/</id><content type="html">&lt;p&gt;This release tracks Lu [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_6_1/CHANGES"&gt;PyLucene 3.6.1 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.14 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 3.6.0-2 available</title><link href="/" rel="alternate"></link><published>2012-05-11T00:00:00+00:00</published><updated>2012-05-11T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2012-05-11:/</id><content type="html">&lt;p&gt;This release tracks Lu [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_6_0/CHANGES"&gt;PyLucene 3.6.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.13 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 3.5.0-3 available</title><link href="/" rel="alternate"></link><published>2011-12-12T00:00:00+00:00</published><updated>2011-12-12T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2011-12-12:/</id><content type="html">&lt;p&gt;This release tracks Lu [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_5_0/CHANGES"&gt;PyLucene 3.5.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.12 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 3.4.0-1 available</title><link href="/" rel="alternate"></link><published>2011-09-19T00:00:00+00:00</published><updated>2011-09-19T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2011-09-19:/</id><content type="html">&lt;p&gt;This release tracks Lu [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_4_0/CHANGES"&gt;PyLucene 3.4.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.11 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 3.3-3 available</title><link href="/" rel="alternate"></link><published>2011-07-23T00:00:00+00:00</published><updated>2011-07-23T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2011-07-23:/</id><content type="html">&lt;p&gt;This release tracks Luce [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_3/CHANGES"&gt;PyLucene 3.3 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.10 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 3.2.0-1 available</title><link href="/" rel="alternate"></link><published>2011-06-09T00:00:00+00:00</published><updated>2011-06-09T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2011-06-09:/</id><content type="html">&lt;p&gt;This release tracks Lu [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_2_0/CHANGES"&gt;PyLucene 3.2.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.9 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 3.1.0-1 available</title><link href="/" rel="alternate"></link><published>2011-04-04T00:00:00+00:00</published><updated>2011-04-04T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2011-04-04:/</id><content type="html">&lt;p&gt;This release tracks Lu [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_1_0/CHANGES"&gt;PyLucene 3.1.0 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.8 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 3.0.3-1 and 2.9.4-1 available</title><link href="/" rel="alternate"></link><published>2010-12-16T00:00:00+00:00</published><updated>2010-12-16T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2010-12-16:/</id><content type="html">&lt;p&gt;These rele [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_0_3/CHANGES"&gt;PyLucene 3.0.3 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.7 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_2_9_4/CHANGES"&gt;PyLucene 2.9.4 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 3.0.2-1 and 2.9.3-1 available</title><link href="/" rel="alternate"></link><published>2010-07-02T00:00:00+00:00</published><updated>2010-07-02T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2010-07-02:/</id><content type="html">&lt;p&gt;These rele [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_0_2/CHANGES"&gt;PyLucene 3.0.2 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/trunk/jcc/CHANGES"&gt;JCC 2.6 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_2_9_3/CHANGES"&gt;PyLucene 2.9.3 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 3.0.1-1 and 2.9.2-1 available</title><link href="/" rel="alternate"></link><published>2010-03-03T00:00:00+00:00</published><updated>2010-03-03T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2010-03-03:/</id><content type="html">&lt;p&gt;These rele [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_0_1/CHANGES"&gt;PyLucene 3.0.1 CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_0_1/jcc/CHANGES"&gt;JCC 2.5.1 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_2_9_2/CHANGES"&gt;PyLucene 2.9.2 CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-Source distributions are available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 3.0.0-1 available</title><link href="/" rel="alternate"></link><published>2009-12-08T00:00:00+00:00</published><updated>2009-12-08T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2009-12-08:/</id><content type="html">&lt;p&gt;This release tracks Lu [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_0_0/CHANGES"&gt;PyLucene CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_3_0_0/jcc/CHANGES"&gt;JCC CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-A source distribution is available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 2.9.1-1 available</title><link href="/" rel="alternate"></link><published>2009-11-10T00:00:00+00:00</published><updated>2009-11-10T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2009-11-10:/</id><content type="html">&lt;p&gt;This release tracks Lu [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_2_9_1/CHANGES"&gt;PyLucene CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_2_9_1/jcc/CHANGES"&gt;JCC CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-A source distribution is available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene 2.9.0-1 available</title><link href="/" rel="alternate"></link><published>2009-10-13T00:00:00+00:00</published><updated>2009-10-13T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2009-10-13:/</id><content type="html">&lt;p&gt;This release tracks Lu [...]
-See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_2_9_0/CHANGES"&gt;PyLucene CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_2_9_0/jcc/CHANGES"&gt;JCC CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-A source distribution is available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>Wiki now available</title><link href="/" rel="alternate"></link><published>2009-07-14T00:00:00+00:00</published><updated>2009-07-14T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2009-07-14:/</id><content type="html">&lt;p&gt;The ORP Wiki is now available  [...]
-judgments and queries in an open environment to make it easier for Lucene developers and users to do relevance testing, much like
-one would …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Apache Lucene PMC has officially voted to add the Open Relevance Project (ORP) as a Lucene subproject. ORP's main goal is to build out collections,
-judgments and queries in an open environment to make it easier for Lucene developers and users to do relevance testing, much like
-one would get if using TREC or other evaluation conferences.&lt;/p&gt;</content><category term="openrelevance/news"></category></entry><entry><title>PyLucene 2.4.1-1 available</title><link href="/" rel="alternate"></link><published>2009-04-03T00:00:00+00:00</published><updated>2009-04-03T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2009-04-03:/</id><content type="html">&lt;p&gt;This release tracks Lucene Java's recent 2.4.1 &lt;a href="https://lucen [...]
- See &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_2_4_1/CHANGES"&gt;PyLucene CHANGES&lt;/a&gt; and &lt;a href="https://svn.apache.org/repos/asf/lucene/pylucene/tags/pylucene_2_4_1/jcc/CHANGES"&gt;JCC CHANGES&lt;/a&gt; for details.&lt;br/&gt;
-A source distribution is available &lt;a href="https://archive.apache.org/dist/lucene/pylucene/"&gt;here&lt;/a&gt;.&lt;/p&gt;</content><category term="pylucene/news"></category></entry><entry><title>PyLucene joins Apache Lucene as a Subproject</title><link href="/" rel="alternate"></link><published>2009-01-08T00:00:00+00:00</published><updated>2009-01-08T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2009-01-08:/</id><content type="html">&lt;p&gt;The  [...]
-subproject. PyLucene was previously hosted at the Open Source Applications
-Foundation since its inception in early 2004.&lt;/p&gt;</content><category term="pylucene/news"></category></entry></feed>
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@@ -1,2545 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<feed xmlns="http://www.w3.org/2005/Atom"><title>Apache Lucene - core/news</title><link href="/" rel="alternate"></link><link href="/feeds/core/news.atom.xml" rel="self"></link><id>/</id><updated>2026-02-25T00:00:00+00:00</updated><subtitle></subtitle><subtitle></subtitle><entry><title>Apache Lucene™ 10.4.0 available</title><link href="/" rel="alternate"></link><published>2026-02-25T00:00:00+00:00</published><updated>2026-02-25T00:00:00+00:00</updated><author><name>Lucene Developers</nam [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.4.0. &lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1040-release-highlights"&gt;Lucene 10.4.0 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;Lucene 10.4 brings some significant performance improvements and a brand new knn vectors format.&lt;/p&gt;
-&lt;p&gt;Many lucene queries should see a performance improvement of 10-15%, some might even see a 35% improvement! This is due to increasing the block size of the terms postings and better utilization of SIMD optimized code.&lt;/p&gt;
-&lt;p&gt;Additionally, there is a new scalar quantized format for dense vectors and knn search. Lucene104ScalarQuantizedVectorsFormat and Lucene104HnswScalarQuantizedVectorsFormat allow custom quantized bits for 1, 2, 4, 7, and 8. The recall has improved significantly and for many vector types, quantizing to 2 bits will achieve even better recall than older formats at the 4 bit level. This improves latency while increasing recall for various vector work loads.&lt;/p&gt;
-&lt;p&gt;&lt;strong&gt;New Features&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Provides new and improved scalar quantized formats Lucene104ScalarQuantizedVectorsFormat  and Lucene104HnswScalarQuantizedVectorsFormat  for dense vectors. Allowing for quantizing to 1, 2, 4, 7, and 8 bits. For reference, the new 2 bit quantization technique provides better recall and speed than the old 4 bit.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;&lt;strong&gt;API Changes&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;New bulk operation APIs for dense vectors and numeric doc values&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;&lt;strong&gt;Improvements and Optimizations&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;HNSW graphs can now delay being built for tiny segments and will prevent completely rebuilding the graphs when handling deletes&lt;/li&gt;
-&lt;li&gt;Handling of deletes in general got much faster and cheaper, improving storage costs significantly when there are very few deleted docs&lt;/li&gt;
-&lt;li&gt;Block size increased for terms postings, significantly improving query latency for many types of queries&lt;/li&gt;
-&lt;li&gt;Use a coarser-grained competitive iterator with lower construction costs for numeric sorts against fields with DocValuesSkippers.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;&lt;strong&gt;Runtime Behavior Changes and Bug Fixes&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix tessellator failure by preferring the shared vertex that is the leftmost vertex of the hole&lt;/li&gt;
-&lt;li&gt;The "reverse" field of SortField is now final. If you have subclassed SortField, you should set "reverse" in the super constructor.&lt;/li&gt;
-&lt;li&gt;Align float vectors on disk to 64 bytes, for optimal performance on Arm Neoverse machines&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/10_4_0/changes/Changes.html"&gt;https://lucene.apache.org/core/10_4_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.3.2 available</title><link href="/" rel="alternate"></link><published>2025-11-17T00:00:00+00:00</published><updated>2025-11-17T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-11-17:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.3.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1032-release-highlights"&gt;Lucene 10.3.2 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;&lt;strong&gt; Bug fixes &lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix potential EOF introduced by optimized filter iterations in MaxScoreBulkScorer.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/10_3_2/changes/Changes.html"&gt;https://lucene.apache.org/core/10_3_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.3.1 available</title><link href="/" rel="alternate"></link><published>2025-10-06T00:00:00+00:00</published><updated>2025-10-06T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-10-06:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.3.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1031-release-highlights"&gt;Lucene 10.3.1 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;&lt;strong&gt; Bug Fixes &lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix the Impact returned from Lucene103PostingsReader when frequencies are not indexed. &lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/10_3_1/changes/Changes.html"&gt;https://lucene.apache.org/core/10_3_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.12.3 available</title><link href="/" rel="alternate"></link><published>2025-09-27T00:00:00+00:00</published><updated>2025-09-27T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-09-27:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.3.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This patch release contains bug fixes that are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9123-release-highlights"&gt;Lucene 9.12.3 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;&lt;strong&gt;Bug fixes&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Support for JDK24+&lt;/li&gt;
-&lt;li&gt;Reduce sharedArenaMaxPermits from 1024 to 64&lt;/li&gt;
-&lt;li&gt;Use READONCE to read segment infos&lt;/li&gt;
-&lt;li&gt;Fix rare spin-loop in RefCountedSharedArena&lt;/li&gt;
-&lt;li&gt;Ensure vector queries handle advanceShallow correctly&lt;/li&gt;
-&lt;li&gt;Fix failure due to hole bridge being coplanar with polygon edge&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Further details of changes are available in the change log available at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_12_3/changes/Changes.html"&gt;https://lucene.apache.org/core/9_12_3/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.3.0 available</title><link href="/" rel="alternate"></link><published>2025-09-13T00:00:00+00:00</published><updated>2025-09-13T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-09-13:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.3.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1030-release-highlights"&gt;Lucene 10.3.0 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;Lucene 10.3 brings major performance improvements.&lt;/p&gt;
-&lt;p&gt;Lexical search is now vectorized to better take advantage of SIMD instructions, more efficient memory access patterns, CPU pipelining and amortize the cost of virtual function calls. Lucene's nightly benchmarks report a 40% speedup compared with Lucene 10.2 when computing top-100 hits by score on disjunctive and conjunctive queries.&lt;/p&gt;
-&lt;p&gt;Vector search now better parallelizes fetching vectors into the CPU cache. Lucene's nightly benchmarks report a 15%-20% speedup compared with Lucene 10.2.&lt;/p&gt;
-&lt;p&gt;The terms dictionary performs about 30% faster than in Lucene 10.2 on primary-key lookups according to Lucene's nightly benchmarks. This should help speed up workloads that rely on terms dictionary lookup performance including primary-key lookups, indexing operations that specify an ID and TermInSet queries.&lt;/p&gt;
-&lt;p&gt;&lt;strong&gt;New Features&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Supports reranking with late interaction model multi-vectors, full precision vector similarity scores, or any provided DoubleValuesSource, enabling improved ranking of search results.&lt;/li&gt;
-&lt;li&gt;Adds a MultiIndexMergeScheduler – a multi-tenant wrapper that allows sharing a common merge scheduler across multiple instances.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;&lt;strong&gt;API Changes&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Adds API to fetch the size of off-heap memory required by a KNN field. This size can be used to help determine the memory requirements for optimal search performance, which can be greatly affected by page faults when not enough memory is available.&lt;/li&gt;
-&lt;li&gt;RandomVectorScorer now supports a bulk scoring interface.&lt;/li&gt;
-&lt;li&gt;LeafReader#searchNearestVectors now accepts an AcceptDocs instance instead of a Bits instance to identify document IDs to filter.&lt;/li&gt;
-&lt;li&gt;Collectors can now take advantage of pre-aggregated data to speed up faceting using LeafCollector#collectRange.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;&lt;strong&gt;Improvements and Optimizations&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Adds optimistic knn search to vector queries. Optimistic knn search addresses a major issue where we return inconsistent results due to race conditions in the shared queue previously used over multi-segment search.&lt;/li&gt;
-&lt;li&gt;Faster vector search on HNSW graphs through GroupVarInt encoding.&lt;/li&gt;
-&lt;li&gt;Searcher managers now support 'Adaptive Refresh', enabling users to control the commit points it refreshes on. This helps with graceful handling of large replication payloads in segment-replicated systems.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;&lt;strong&gt;Runtime Behavior Changes and Bug Fixes&lt;/strong&gt;&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;The default ReadAdvice has been changed from RANDOM to NORMAL. MMapDirectory will no longer set any specific read advice out-of-the-box.&lt;/li&gt;
-&lt;li&gt;Default RefCountedSharedArena.DEFAULT_MAX_PERMITS are reduced to 64. Also fixes the infinite loop when RefCountedSharedArena's underlying Arena#close fails due to concurrent usage of segments.&lt;/li&gt;
-&lt;li&gt;Uses READONCE when reading segment infos, to fix mmap leaks on segment info files. Includes fixes for multiple other resource leaks.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/10_3_0/changes/Changes.html"&gt;https://lucene.apache.org/core/10_3_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.2.2 available</title><link href="/" rel="alternate"></link><published>2025-06-20T00:00:00+00:00</published><updated>2025-06-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-06-20:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.2.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This patch release contains bug fixes that are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1022-release-highlights"&gt;Lucene 10.2.2 Release Highlights&lt;/h3&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Reduce NeighborArray on-heap memory during HNSW graph building&lt;/li&gt;
-&lt;li&gt;Fix IndexSortSortedNumericDocValuesRangeQuery for int sort&lt;/li&gt;
-&lt;li&gt;ValueSource.fromDoubleValuesSource(dvs).getSortField() would throw errors when used if the DoubleValuesSource needed scores &lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Further details of changes are available in the change log available at: &lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/10_2_2/changes/Changes.html"&gt;http://lucene.apache.org/core/10_2_2/changes/Changes.html&lt;/a&gt; &lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.12.2 available</title><link href="/" rel="alternate"></link><published>2025-06-20T00:00:00+00:00</published><updated>2025-06-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-06-20:/</id><summary type=" [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This patch release contains bug fixes that are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9122-release-highlights"&gt;Lucene 9.12.2 Release Highlights&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Reduce NeighborArray on-heap memory during HNSW graph building&lt;/li&gt;
-&lt;li&gt;Fix IndexSortSortedNumericDocValuesRangeQuery for int sort&lt;/li&gt;
-&lt;li&gt;ValueSource.fromDoubleValuesSource(dvs).getSortField() would throw errors when used if the DoubleValuesSource needed scores&lt;/li&gt;
-&lt;li&gt;Disable connectedComponents logic in HNSW graph building.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Further details of changes are available in the change log available at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_12_2/changes/Changes.html"&gt;https://lucene.apache.org/core/9_12_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.2.1 available</title><link href="/" rel="alternate"></link><published>2025-05-01T00:00:00+00:00</published><updated>2025-05-01T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-05-01:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.2.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This patch release contains bug fixes that are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1021-release-highlights"&gt;Lucene 10.2.1 Release Highlights&lt;/h3&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix DISIDocIdStream::count so that it does not try to count beyond max.&lt;/li&gt;
-&lt;li&gt;Correct TermOrdValComparator competitive iterator so that it forces sparse field iteration to be at least scoring window baseline when doing intoBitSet.&lt;/li&gt;
-&lt;li&gt;Provide better impacts for fields indexed with IndexOptions.DOCS&lt;/li&gt;
-&lt;li&gt;Fixed lead cost computations for bulk scorers of conjunctive queries that mix MUST and FILTER clauses, and disjunctive queries that configure a minimum number of matching SHOULD clauses.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Further details of changes are available in the change log available at: &lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/10_2_1/changes/Changes.html"&gt;http://lucene.apache.org/core/10_2_1/changes/Changes.html&lt;/a&gt; &lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.2.0 available</title><link href="/" rel="alternate"></link><published>2025-04-10T00:00:00+00:00</published><updated>2025-04-10T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2025-04-10:/</id><summary type=" [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search on high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.2.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search on high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous features, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1020-release-highlights"&gt;Lucene 10.2.0 Release Highlights&lt;/h3&gt;
-&lt;p&gt;Lucene 10.2 includes major search-time performance improvements for a wide variety of queries. This is most notably due to:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Improved storage format of doc IDs in BKD trees for faster decoding.
-More vectorization when processing PointRangeQuerys and non-scoring BooleanQuerys.&lt;/li&gt;
-&lt;li&gt;Encoding of dense blocks of postings lists as bit sets instead of FOR-delta. This change also saves a bit of storage.&lt;/li&gt;
-&lt;li&gt;Merging matches of dense conjunctive clauses using bitwise ANDs. This especially helps on postings blocks that are encoded as bit sets.
-Implementing the ACORN-1 algorithm for pre-filtered vector searches.&lt;/li&gt;
-&lt;li&gt;Searches that don't require scores and match many docs should generally see good speedups, depending on how expensive the Collector is. Compared with Lucene 10.1.0, Lucene's nightly benchmarks report the following speedups when counting the number of hits of a the following queries:&lt;ul&gt;
-&lt;li&gt;Disjunctions of term queries: 77% to 4x faster&lt;/li&gt;
-&lt;li&gt;Conjunctions of term queries: 38% to 5x faster&lt;/li&gt;
-&lt;li&gt;Filtered disjunctions of term queries: 2.5x to 4x faster&lt;/li&gt;
-&lt;li&gt;Filtered PointRangeQuery: 3.5x faster&lt;/li&gt;
-&lt;/ul&gt;
-&lt;/li&gt;
-&lt;li&gt;And the following speedup when computing top-100 hits: &lt;ul&gt;
-&lt;li&gt;Pre-filtered vector search: 3.5x faster&lt;/li&gt;
-&lt;/ul&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="changes-in-runtime-behavior"&gt;Changes in Runtime Behavior&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;TieredMergePolicy's default floor segment size was increased from 2MB to 16MB. This is expected to result in slightly slower indexing and about 10 fewer segments per index for applications that flush frequently. This should in-turn help speed up queries that have a high per-segment overhead such as multi-term queries, point queries and vector search.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New Features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Added TopDocs#rrf to combine multiple TopDocs instances using reciprocal rank fusion.&lt;/li&gt;
-&lt;li&gt;Added SeededKnnVectorQuery, an optimization to KnnVectorQuery that allows selecting better entry points for vector search using a seed Query.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;RegexpQuery support for unicode case-insensitive characters and ranges.&lt;br&gt;
-Optimizations&lt;/li&gt;
-&lt;li&gt;Java 24 vector API support&lt;/li&gt;
-&lt;li&gt;Efficiency improvements to Automaton and RegExp&lt;/li&gt;
-&lt;li&gt;Faster merging of HNSW graphs which translated in a 25% indexing speedup in Lucene's nightly benchmarks.&lt;/li&gt;
-&lt;li&gt;Conjunctive queries can now skip applying clauses when they have long runs of matching docs, a case which is not uncommon when an index sort is configured.
-Reduce heap usage during BKD tree merges.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;... plus a multitude of helpful bug fixes!&lt;/p&gt;
-&lt;p&gt;Further details of changes are available in the change log available at: &lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/10_2_0/changes/Changes.html"&gt;http://lucene.apache.org/core/10_2_0/changes/Changes.html&lt;/a&gt; &lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.1.0 available</title><link href="/" rel="alternate"></link><published>2024-12-20T00:00:00+00:00</published><updated>2024-12-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-12-20:/</id><summary type=" [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.1.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1010-release-highlights"&gt;Lucene 10.1.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New Features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Add IndexInput::isLoaded to determine if the contents of an  input is resident in physical memory&lt;/li&gt;
-&lt;li&gt;FeatureField now supports storing term vectors.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;TieredMergePolicy now allows merging up to maxMergeAtOnce segments for merges below the floor segment size, even if maxMergeAtOnce is greater than segmentsPerTier. This makes it more efficient to configure TieredMergePolicy to merge segments aggressively by configuring a high value of floorSegmentSize (e.g. 64MB), a low value of segmentsPerTier (e.g. 4) and a high value of maxMergeAtOnce (e.g. 32).&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Many speedups to top-k query evaluation, in particular: top-level disjunctions, filtered disjunctions, conjunctions, DisjunctionMaxQuery.&lt;/li&gt;
-&lt;li&gt;Speedup to exhaustive evaluation of conjunctive queries by vectorizing the intersection of postings lists.&lt;/li&gt;
-&lt;li&gt;Reduced contention for top-k query evaluation when IndexSearcher is configured with an executor.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;... plus a multitude of helpful bug fixes!&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/10_1_0/changes/Changes.html"&gt;https://lucene.apache.org/core/10_1_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.12.1 available</title><link href="/" rel="alternate"></link><published>2024-12-13T00:00:00+00:00</published><updated>2024-12-13T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-12-13:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9121-release-highlights"&gt;Lucene 9.12.1 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Allow easier configuration of the Panama vectorization provider with newer Java versions. Set the org.apache.lucene.vectorization.upperJavaFeatureVersion system property to increase the set of Java versions that Panama vectorization will provide optimized implementations for.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Fixed backwards compatibility bug that caused sparse (not all documents have a vector) KNN indices written with 9.0.0 to give silently (no exception) terrible recall results when searched by any 9.x release&lt;/li&gt;
-&lt;li&gt;Improve Tessellatorlogic when two holes share the same vertex with the polygon which was failing in valid polygons.&lt;/li&gt;
-&lt;li&gt;Fix backwards compatibility bug that caused 9.12.0 to incorrectly throw IllegalStateException when trying to open an IndexReader on an index created with quantized (int4, int7, int8) KNN vectors using Lucene99HnswScalarQuantizedVectorsFormat.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_12_1/changes/Changes.html"&gt;https://lucene.apache.org/core/9_12_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 10.0.0 available</title><link href="/" rel="alternate"></link><published>2024-10-14T00:00:00+00:00</published><updated>2024-10-14T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-10-14:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 10.0.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-1000-release-highlights"&gt;Lucene 10.0.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="system-requirements"&gt;System requirements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Lucene 10.0 requires JDK 21 or newer&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="api-changes"&gt;API changes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;KNN vector values now have a random-access API.&lt;/li&gt;
-&lt;li&gt;Deprecated APIs have been removed and a number of API changes have been made. Please consult the migrate guide for an extensive list and actions to take to migrate to 10.0.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New Features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;A new IndexInput#prefetch API has been added, allowing query evaluation logic to let the Directory know about regions of data that are about to be read. This helps perform I/O concurrently under the hood. MMapDirectory implements this API using the madvise system call and the MADV_WILLNEED flag on Linux and Mac OS.&lt;/li&gt;
-&lt;li&gt;Lucene now supports sparse indexing on doc values via FieldType#setDocValuesSkipIndexType. The sparse index will record the minimum and maximum values per block of doc IDs. Used in conjunction with index sorting to cluster similar documents together, this allows for very space-efficient and CPU-efficient filtering.&lt;/li&gt;
-&lt;li&gt;Search concurrency is now decoupled from the index geometry, so that an index can be searched using any number of threads, regardless of its number of segments.&lt;/li&gt;
-&lt;li&gt;Kmeans clustering on vectors&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Lucene now opens files with the MADV_RANDOM advice by default on Linux and Mac OS. This results in better efficiency for indexes that exceed the size of the page cache, but can make it slower to load indexes in the page cache. It is possible to revert to the MADV_NORMAL read advice by default by passing -Dorg.apache.lucene.store.defaultReadAdvice=NORMAL as a JVM startup flag.&lt;/li&gt;
-&lt;li&gt;Snowball dictionaries have been upgraded, resulting in improved tokenization. This may require reindexing to ensure consistency of search results with pre-10.0 indexes.&lt;/li&gt;
-&lt;li&gt;The expressions module is now using MethodHandles and &lt;a href="https://openjdk.org/jeps/309"&gt;Dynamic Class-File Constants (JEP 309)&lt;/a&gt; in combination with &lt;a href="https://openjdk.org/jeps/371"&gt;hidden classes (JEP 371)&lt;/a&gt; to implement a strict and type-safe call to external functions. This allows to easier extend expressions with custom functions in secure way because runtime linking of custom functions is no longer the responsibility of the expression [...]
-&lt;/ul&gt;
-&lt;p&gt;... plus a multitude of helpful bug fixes!&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/10_0_0/changes/Changes.html"&gt;https://lucene.apache.org/core/10_0_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.12.0 available</title><link href="/" rel="alternate"></link><published>2024-09-28T00:00:00+00:00</published><updated>2024-09-28T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-09-28:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library
-written entirely in Java. It is a technology suitable for nearly any
-application that requires structured search, full-text search, faceting,
-nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library
-written entirely in Java. It is a technology suitable for nearly any
-application that requires structured search, full-text search, faceting,
-nearest-neighbor search across high-dimensionality vectors, spell
-correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release is
-available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9120-release-highlights"&gt;Lucene 9.12.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="security-fixes"&gt;Security Fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Deserialization of Untrusted Data vulnerability in Apache Lucene
-   Replicator - CVE-2024-45772 &lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New Features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Improve intra-merge parallelism for many value types. (Ben Trent)&lt;/li&gt;
-&lt;li&gt;Add support JDK 23 to the Panama Vectorization Provider. (Chris Hegarty)&lt;/li&gt;
-&lt;li&gt;Match-time aggregation engine with improved flexibility and performance.
-   (Egor Potemkin, Shradha Shankar)&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Add Intervals.regexp and Intervals.range methods to produce IntervalsSource
-   for regexp and range queries. (Mayya Sharipova)&lt;/li&gt;
-&lt;li&gt;Remove support for writing 8 bit scalar vector quantization. 4 and 7 bit
-   quantization are still supported (Michael McCandless )&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Inline postings skip data to improve performance of queries that need
-   skipping such as conjunctions. (Adrien Grand)&lt;/li&gt;
-&lt;li&gt;Optimizations to the decoding logic of blocks of postings. (Adrien Grand,
-   Uwe Schindler, Greg Miller)&lt;/li&gt;
-&lt;li&gt;Avoid performance degradation with closing shared mapped segment data
-   (Chris Hegarty, Michael Gibney, Uwe Schindler)&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;... plus a multitude of helpful bug fixes!&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_12_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_12_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.11.4 available</title><link href="/" rel="alternate"></link><published>2024-09-24T00:00:00+00:00</published><updated>2024-09-24T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-09-24:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.4.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8114-release-highlights"&gt;Lucene 8.11.4 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;There are no changes from Lucene 8.11.3&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_11_4/changes/Changes.html"&gt;https://lucene.apache.org/core/8_11_4/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.11.1 available</title><link href="/" rel="alternate"></link><published>2024-06-27T00:00:00+00:00</published><updated>2024-06-27T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-06-27:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.11.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9111-release-highlights"&gt;Lucene 9.11.1 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix performance regression in NumericComparator.&lt;/li&gt;
-&lt;li&gt;Remove intra-merge parallelism for everything except HNSW graph merges.&lt;/li&gt;
-&lt;li&gt;Fix bug that prevented adding a parent field to an index with no fields.&lt;/li&gt;
-&lt;li&gt;Fix IndexOutOfBoundsException thrown in DefaultPassageFormatter by unordered matches.&lt;/li&gt;
-&lt;li&gt;StringValueFacetCounts stops throwing NPE when faceting over an empty match-set.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_11_1/changes/Changes.html"&gt;https://lucene.apache.org/core/9_11_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.11.0 available</title><link href="/" rel="alternate"></link><published>2024-06-06T00:00:00+00:00</published><updated>2024-06-06T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-06-06:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.11.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9110-release-highlights"&gt;Lucene 9.11.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Add support for posix_madvise to MMapDirectory: If running on Linux/macOS and Java 21 or later, MMapDirectory uses IOContext to pass suitable MADV flags to kernel of operating system. This may improve paging logic especially when working with large indexes under memory pressure. &lt;/li&gt;
-&lt;li&gt;Expand support for new scalar bit levels for HNSW vectors. This includes 4-bit vectors and an option to compress them to gain a 50% reduction in memory usage.&lt;/li&gt;
-&lt;li&gt;Recursive graph bisection is now supported on indexes that have blocks &lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;MergeScheduler can now provide an executor for intra-merge parallelism. The first implementation is the ConcurrentMergeScheduler.&lt;/li&gt;
-&lt;li&gt;Upgrade icu4j to version 74.2.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Use RWLock to access LRUQueryCache to reduce contention.&lt;/li&gt;
-&lt;li&gt;Speedup multi-segment HNSW graph search for diversifying child kNN queries.&lt;/li&gt;
-&lt;li&gt;Add a MemorySegment Vector scorer - for scoring without copying on-heap. This can improve search latency by almost 2x for byte vectors.&lt;/li&gt;
-&lt;li&gt;Switch to using optimized, primitive collections where possible to improve performance and heap utilization.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_11_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_11_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.10.0 available</title><link href="/" rel="alternate"></link><published>2024-02-20T00:00:00+00:00</published><updated>2024-02-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-02-20:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.10.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-9100-release-highlights"&gt;Lucene 9.10.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Support for similarity-based vector searches, ie. finding all nearest neighbors whose similarity is greater than a configured threshold from a query vector. See [Byte|Float]VectorSimilarityQuery.&lt;/li&gt;
-&lt;li&gt;Index sorting is now compatible with block joins. See IndexWriterConfig#setParentField.&lt;/li&gt;
-&lt;li&gt;MMapDirectory now takes advantage of the now finalized JDK foreign memory API internally when running on Java 22 (or later). This was only supported with Java 19 to 21 until now.&lt;/li&gt;
-&lt;li&gt;SIMD vectorization now takes advantage of JDK vector incubator on Java 22. This was only supported with Java 20 or 21 until now.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Tail postings are now encoded using group-varint. This yielded speedups on queries that match lots of terms that have short postings lists in Lucene's nightly benchmarks.&lt;/li&gt;
-&lt;li&gt;Range queries on points now exit earlier when evaluating a segment that has no matches. This will improve performance when intersected with other queries that have a high up-front cost such as multi-term queries.&lt;/li&gt;
-&lt;li&gt;BooleanQueries that mix SHOULD and FILTER clauses now propagate minimum competitive scores to the SHOULD clauses, yielding significant speedups for top-k queries sorted by descending score.&lt;/li&gt;
-&lt;li&gt;IndexSearcher#count has been optimized on pure disjunctions of two term queries.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_10_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_10_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.11.3 available</title><link href="/" rel="alternate"></link><published>2024-02-08T00:00:00+00:00</published><updated>2024-02-08T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-02-08:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.3.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8113-release-highlights"&gt;Lucene 8.11.3 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;A number of bugs in polygon tessellating have been fixed.&lt;/li&gt;
-&lt;li&gt;GC Load during indexing has been reduced by estimating FST BysteStore block size.&lt;/li&gt;
-&lt;li&gt;BKD trees will no longer possibly overflow when more than 4 billion points are added.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_11_3/changes/Changes.html"&gt;https://lucene.apache.org/core/8_11_3/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.9.2 available</title><link href="/" rel="alternate"></link><published>2024-01-29T00:00:00+00:00</published><updated>2024-01-29T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2024-01-29:/</id><summary type=" [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.9.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-992-release-highlights"&gt;Lucene 9.9.2 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix NPE when sampling for quantization in Lucene99HnswScalarQuantizedVectorsFormat (Ben Trent)&lt;/li&gt;
-&lt;li&gt;Rollback the tmp storage of BytesRefHash to -1 after sort (Guo Feng)&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_9_2/changes/Changes.html"&gt;https://lucene.apache.org/core/9_9_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.9.1 available</title><link href="/" rel="alternate"></link><published>2023-12-16T00:00:00+00:00</published><updated>2023-12-16T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-12-16:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.9.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-991-release-highlights"&gt;Lucene 9.9.1 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;JVM SIGSEGV crash when compiling computeCommonPrefixLengthAndBuildHistogram (Chris Hegarty)&lt;/li&gt;
-&lt;li&gt;Push and pop OutputAccumulator as IntersectTermsEnumFrames are pushed and popped (Guo Feng, Mike McCandless)&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_9_1/changes/Changes.html"&gt;https://lucene.apache.org/core/9_9_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.9.0 available</title><link href="/" rel="alternate"></link><published>2023-12-04T00:00:00+00:00</published><updated>2023-12-04T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-12-04:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library
-written entirely in Java. It is a technology suitable for nearly any
-application that requires structured search, full-text search, faceting,
-nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.9.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library
-written entirely in Java. It is a technology suitable for nearly any
-application that requires structured search, full-text search, faceting,
-nearest-neighbor search across high-dimensionality vectors, spell
-correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below. The release is
-available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-990-release-highlights"&gt;Lucene 9.9.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New Features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Add int8 scalar quantization to the HNSW vector format. This
-   optionally allows for more compact lossy storage for the vectors,
-   requiring approximately 4x less memory for fast HNSW search.&lt;/li&gt;
-&lt;li&gt;HNSW graph now can be merged with multiple threads, leveraging the
-   same infrastructure that inter-segment concurrency utilizes.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="improvements"&gt;Improvements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Speed up Panama vector support, use FMA, and test improvements. &lt;/li&gt;
-&lt;li&gt;FSTCompiler can now approximately limit how much RAM it uses to share 
-   suffixes during FST construction using the suffixRAMLimitMB method. &lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Faster top-level conjunctions on term queries when sorting by
-   descending score.&lt;/li&gt;
-&lt;li&gt;Change Postings back to using FOR in Lucene99PostingsFormat. Freqs,
-   positions and offset keep using PFOR.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;... plus a multitude of helpful bug fixes!&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_9_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_9_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.8.0 available</title><link href="/" rel="alternate"></link><published>2023-09-28T00:00:00+00:00</published><updated>2023-09-28T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-09-28:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.8.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-980-release-highlights"&gt;Lucene 9.8.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Faster computation of top-k hits on boolean queries. Lucene's nightly benchmarks report a 20%-30% speedup for disjunctive queries and a 11%-13% speedup for conjunctive queries since Lucene 9.7. Disjunctive queries with many and/or high-frequency terms should see even higher speedups.&lt;/li&gt;
-&lt;li&gt;Faster computation of top-k hits when sorting by field. Lucene's nightly benchmarks report speedups between 7% and 33% since 9.7 depending on the type and cardinality of the field that is used for sorting.&lt;/li&gt;
-&lt;li&gt;Faster indexing of numeric doc values when index sorting is turned on.&lt;/li&gt;
-&lt;li&gt;Expressions now evaluate all arguments in a fully lazy manner, which may provide significant speedups and throughput improvements for heavy expression users.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="api-changes"&gt;API Changes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Move max vector dims limit to Codec (Mayya Sharipova)&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Introduced LeafCollector#finish, a hook that runs after collection has finished running on a leaf.&lt;/li&gt;
-&lt;li&gt;Add "KnnCollector" to "LeafReader" and "KnnVectorReader" so that custom collection of vector search results can be provided. The first custom collector provides "ToParentBlockJoin[Float|Byte]KnnVectorQuery" joining child vector documents with their parent documents.&lt;/li&gt;
-&lt;li&gt;Add support for recursive graph bisection, also called bipartite graph partitioning, and often abbreviated BP, an algorithm for reordering doc IDs that results in more compact postings and faster queries, especially conjunctions.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix HNSW graph search bug that potentially leaked unapproved docs&lt;/li&gt;
-&lt;li&gt;Fix bug in TermsEnum#seekCeil on doc values terms enums that causes IndexOutOfBoundsException.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_8_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_8_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.7.0 available</title><link href="/" rel="alternate"></link><published>2023-06-25T00:00:00+00:00</published><updated>2023-06-25T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-06-25:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.7.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-970-release-highlights"&gt;Lucene 9.7.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;The new IndexWriter#updateDocuments(Query, Iterable) allows updating multiple documents that match a query at the same time.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Function queries can now compute similarity scores between kNN vectors.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;KNN indexing and querying can now take advantage of vectorization for distance computation between vectors. To enable this, use exactly Java 20 or 21, and pass --add-modules jdk.incubator.vector as a command-line parameter to the Java program.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;KNN queries now run concurrently if the IndexSearcher has been created with an executor.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Queries sorted by field are now able to dynamically prune hits only using the after value. This yields major speedups when paginating deeply.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Reduced merge-time overhead of computing the number of soft deletes.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="changes-in-runtime-behavior"&gt;Changes in runtime behavior&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;KNN vectors are now disallowed to have non-finite values such as NaN or ±Infinity.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Backward reading is no longer an adversarial case for BufferedIndexInput, used by NIOFSDirectory and SimpleFSDirectory. This addresses a performance bug when performing terms dictionary lookups with either of these directories.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;GraphTokenStreamFiniteStrings#articulationPointsRecurse may no longer overflow the stack.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;... plus a number of helpful bug fixes!&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_7_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_7_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.6.0 available</title><link href="/" rel="alternate"></link><published>2023-05-09T00:00:00+00:00</published><updated>2023-05-09T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-05-09:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.6.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-960-release-highlights"&gt;Lucene 9.6.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Introduce a new KeywordField for simple and efficient filtering, sorting and faceting.&lt;/li&gt;
-&lt;li&gt;Add support for Java 20 foreign memory API. If exactly Java 19 or 20 is used, MMapDirectory will mmap Lucene indexes in chunks of 16 GiB (instead of 1 GiB) and indexes closed while queries are running can no longer crash the JVM.&lt;/li&gt;
-&lt;li&gt;Improved performance for TermInSetQuery, PrefixQuery, WildcardQuery and TermRangeQuery&lt;/li&gt;
-&lt;li&gt;Lower memory usage for BloomFilteringPostingsFormat&lt;/li&gt;
-&lt;li&gt;Faster merges for HNSW indexes&lt;/li&gt;
-&lt;li&gt;Improvements to concurrent indexing throughput under heavy load&lt;/li&gt;
-&lt;li&gt;Correct equals implementation in SynonymQuery&lt;/li&gt;
-&lt;li&gt;'explain' is now implemented on TermAutomatonQuery&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_6_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_6_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.5.0 available</title><link href="/" rel="alternate"></link><published>2023-01-30T00:00:00+00:00</published><updated>2023-01-30T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2023-01-30:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.5.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-950-release-highlights"&gt;Lucene 9.5.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Added KnnByteVectorField and ByteVectorQuery that are specialized for indexing and querying byte-sized vectors. Deprecated KnnVectorField, KnnVectorQuery and LeafReader#getVectorValues in favour of the newly introduced KnnFloatVectorField, KnnFloatVectorQuery and LeafReader#getFloatVectorValues that are specialized for float vectors.&lt;/li&gt;
-&lt;li&gt;Added IntField, LongField, FloatField and DoubleField: easy to use numeric fields that perform well both for filtering and sorting.&lt;/li&gt;
-&lt;li&gt;Support for Java 19 foreign memory access ("project Panama") was enabled by default removing the need to provide the "--enable-preview" flag.&lt;/li&gt;
-&lt;li&gt;Added ByteWritesTrackingDirectoryWrapper to expose metrics for bytes merged, flushed, and overall write amplification factor.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Improved storage efficiency of connections in the HNSW graph used for vector search&lt;/li&gt;
-&lt;li&gt;Added  new stored fields and term vectors interfaces: IndexReader#storedFields and IndexReader#termVectors. These do not rely upon ThreadLocal storage for each index segment, which can greatly reduce RAM requirements when there are many threads and/or segments.&lt;/li&gt;
-&lt;li&gt;Several improvements were made to IndexSortSortedNumericDocValuesRangeQuery including query execution optimization with points for descending sorts and BoundedDocIdSetIterator construction sped up using bkd binary search.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="other"&gt;Other&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Moved DocValuesNumbersQuery from sandbox to NumericDocValuesField#newSlowSetQuery&lt;/li&gt;
-&lt;li&gt;Fix exponential runtime for nested BooleanQuery#rewrite with non scoring clauses&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_5_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_5_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.4.2 available</title><link href="/" rel="alternate"></link><published>2022-11-21T00:00:00+00:00</published><updated>2022-11-21T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-11-21:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.4.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-942-release-highlights"&gt;Lucene 9.4.2 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Fixed integer overflow when opening segments containing more than ~16M KNN vectors.&lt;/li&gt;
-&lt;li&gt;Fixed cost computation of BitSets created via DocIdSetBuilder, such as for multi-term queries. This may improve performance of multi-term queries.&lt;/li&gt;
-&lt;li&gt;CheckIndex now verifies the consistency of KNN vectors more thoroughly.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_4_2/changes/Changes.html"&gt;https://lucene.apache.org/core/9_4_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.4.1 available</title><link href="/" rel="alternate"></link><published>2022-10-24T00:00:00+00:00</published><updated>2022-10-24T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-10-24:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.4.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-941-release-highlights"&gt;Lucene 9.4.1 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;When reading large segments, the kNN vectors format could fail with a validation error, preventing further writes or searches on the index. This bug is now fixed. Only version 9.4.0 was affected, so it is recommended to skip 9.4.0 if you are using kNN vectors.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_4_1/changes/Changes.html"&gt;https://lucene.apache.org/core/9_4_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.4.0 available</title><link href="/" rel="alternate"></link><published>2022-09-30T00:00:00+00:00</published><updated>2022-09-30T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-09-30:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.4.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-940-release-highlights"&gt;Lucene 9.4.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Added ShapeDocValues/Field, a unified abstraction to represent existing types: XY and lat/long.&lt;/li&gt;
-&lt;li&gt;FacetSets can now be filtered using a Query via MatchingFacetSetCounts.&lt;/li&gt;
-&lt;li&gt;SortField now allows control over whether to apply index-sort optimizations.&lt;/li&gt;
-&lt;li&gt;Support for Java 19 foreign memory access ("project Panama") was added. Applications started with command line parameter "java --enable-preview" will automatically use the new foreign memory API of Java 19 to access indexes on disk with MMapDirectory. This is an opt-in feature and requires explicit Java command line flag passed to your application's Java process (e.g., modify startup parameters of Solr or Elasticsearch/Opensearch)! When enabled, Lucene logs a notice using java. [...]
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Added support for dynamic pruning to queries sorted by a string field that is indexed with both terms and SORTED or SORTED_SET doc values. This can lead to dramatic speedups when applicable.&lt;/li&gt;
-&lt;li&gt;TermInSetQuery is optimized for the case when one of its terms matches all docs in a segment, and it now provides cost estimation, making it usable with IndexOrDocValuesQuery for better query planning.&lt;/li&gt;
-&lt;li&gt;KnnVector fields can now be stored with reduced (8-bit) precision, saving storage and yielding a small query latency improvement.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="other"&gt;Other&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;KnnVector fields' HNSW graphs are now created incrementally when new documents are added, rather than all-at-once when flushing. This yields more consistent predictable behavior at the cost of an overall increase in indexing time.&lt;/li&gt;
-&lt;li&gt;randomizedtesting dependency upgraded to 2.8.1&lt;/li&gt;
-&lt;li&gt;addIndexes(CodecReader) now respects MergePolicy and MergeScheduler, enabling it to do its work concurrently.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_4_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_4_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.3.0 available</title><link href="/" rel="alternate"></link><published>2022-07-29T00:00:00+00:00</published><updated>2022-07-29T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-07-29:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.3.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-930-release-highlights"&gt;Lucene 9.3.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Merge on full flush is enabled now by default with a timeout of 500ms, giving the merge policy a chance to merge NRT segments together before publishing a new point-in-time view of the IndexReader. This should give queries a small performance boost in the near-realtime case, especially terms-dictionary-intensive queries like fuzzy queries.&lt;/li&gt;
-&lt;li&gt;Add getAllChildren functionality to facets.&lt;/li&gt;
-&lt;li&gt;Added facetsets module for high dimensional (hyper-rectangle) faceting. &lt;/li&gt;
-&lt;li&gt;Top-level two-clause disjunctions sorted by score now use the block-max MAXSCORE algorithm, which introduced a 40%-75% speedup in our benchmarks.&lt;/li&gt;
-&lt;li&gt;BooleanQuery can return quick counts for simple boolean queries.&lt;/li&gt;
-&lt;li&gt;When running KnnVectorQuery with a filter, reuse the cached filter bit set.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_3_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_3_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.11.2 available</title><link href="/" rel="alternate"></link><published>2022-06-17T00:00:00+00:00</published><updated>2022-06-17T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-06-17:/</id><summary type="h [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8112-release-highlights"&gt;Lucene 8.11.2 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;Bug fixes&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;LUCENE-10564: Make sure SparseFixedBitSet#or updates ramBytesUsed.&lt;/li&gt;
-&lt;li&gt;LUCENE-10477: Highlighter: WeightedSpanTermExtractor.extractWeightedSpanTerms to Query#rewrite
-  multiple times if necessary.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Optimizations&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;LUCENE-10481: FacetsCollector will not request scores if it does not use them.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_11_2/changes/Changes.html"&gt;https://lucene.apache.org/core/8_11_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.2.0 available</title><link href="/" rel="alternate"></link><published>2022-05-23T00:00:00+00:00</published><updated>2022-05-23T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-05-23:/</id><summary type=" [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.2.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-920-release-highlights"&gt;Lucene 9.2.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Numerous improvements to indexing and query performance for KNN vectors&lt;/li&gt;
-&lt;li&gt;More efficient implementations for count operations on range queries&lt;/li&gt;
-&lt;li&gt;A new FieldExistsQuery that chooses the best index structures to run over for you&lt;/li&gt;
-&lt;li&gt;A new Persian stemmer&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_2_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_2_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.1.0 available</title><link href="/" rel="alternate"></link><published>2022-03-22T00:00:00+00:00</published><updated>2022-03-22T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2022-03-22:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.1.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-910-release-highlights"&gt;Lucene 9.1.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Lucene JARs are now proper Java modules, with module descriptors and dependency information&lt;/li&gt;
-&lt;li&gt;Support for filtering in nearest-neighbor vector search&lt;/li&gt;
-&lt;li&gt;Support for intervals queries in the standard query syntax&lt;/li&gt;
-&lt;li&gt;A new token filter SpanishPluralStemFilter for precise stemming of Spanish plurals&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Up to 30% improvement in index throughput for high-dimensional vectors &lt;/li&gt;
-&lt;li&gt;Up to 10% faster nearest neighbor searches on high-dimensional vectors&lt;/li&gt;
-&lt;li&gt;Faster execution of "count" searches across different query types&lt;/li&gt;
-&lt;li&gt;Faster counting for taxonomy facets&lt;/li&gt;
-&lt;li&gt;Several other search speed-ups, including improvements to PointRangeQuery, MultiRangeQuery, and CoveringRangeQuery&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="other"&gt;Other&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;The test framework is now a module, so all classes have been moved from to org.apache.lucene.tests.* to avoid package name conflicts&lt;/li&gt;
-&lt;li&gt;Lucene now faithfully implements the HNSW algorithm for nearest neighbor search by supporting multiple graph layers&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;… plus a number of helpful bug fixes!&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_1_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_1_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.11.1 available</title><link href="/" rel="alternate"></link><published>2021-12-16T00:00:00+00:00</published><updated>2021-12-16T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-12-16:/</id><summary type="h [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8111-release-highlights"&gt;Lucene 8.11.1 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Log4j is upgraded to v2.16.0 to mitigate CVE-2021-44228 (for Luke users)&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 9.0.0 available</title><link href="/" rel="alternate"></link><published>2021-12-07T00:00:00+00:00</published><updated>2021-12-07T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-12-07:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.0.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 9.0.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-900-release-highlights"&gt;Lucene 9.0.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="system-requirements"&gt;System requirements&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Lucene 9.0 requires JDK 11 or newer&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Support for indexing high-dimensionality numeric vectors to perform nearest-neighbor search, using the Hierarchical Navigable Small World graph algorithm&lt;/li&gt;
-&lt;li&gt;New Analyzers for Serbian, Nepali, and Tamil languages&lt;/li&gt;
-&lt;li&gt;IME-friendly autosuggest for Japanese&lt;/li&gt;
-&lt;li&gt;Snowball 2, adding Hindi, Indonesian, Nepali, Serbian, Tamil, and Yiddish stemmers&lt;/li&gt;
-&lt;li&gt;New normalization/stemming for Swedish and Norwegian&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Up to 400% faster taxonomy faceting&lt;/li&gt;
-&lt;li&gt;10-15% faster indexing of multi-dimensional points&lt;/li&gt;
-&lt;li&gt;Several times faster sorting on fields that are indexed with points. This optimization used to be an opt-in in late 8.x releases and is now opt-out as of 9.0.&lt;/li&gt;
-&lt;li&gt;ConcurrentMergeScheduler now assumes fast I/O, likely improving indexing speed in case where heuristics would incorrectly detect whether the system had modern I/O or not&lt;/li&gt;
-&lt;li&gt;Encoding of postings lists changed from FOR-delta to PFOR-delta to save further disk space&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="other"&gt;Other&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;File formats have all been changed from big-endian order to little endian order&lt;/li&gt;
-&lt;li&gt;Lucene 9 no longer has split packages. This required renaming some packages outside of the lucene-core JAR, so you will need to adjust some imports accordingly.&lt;/li&gt;
-&lt;li&gt;Using Lucene 9 with the module system should be considered experimental. We expect to make progress on this in future 9.x releases.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/9_0_0/changes/Changes.html"&gt;https://lucene.apache.org/core/9_0_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.11.0 available</title><link href="/" rel="alternate"></link><published>2021-11-16T00:00:00+00:00</published><updated>2021-11-16T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-11-16:/</id><summary type="h [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.11.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8110-release-highlights"&gt;Lucene 8.11.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Facets now properly ignore deleted documents when accumulating facet counts for all documents.&lt;/li&gt;
-&lt;li&gt;CheckIndex can run concurrently.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_11_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_11_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.10.1 available</title><link href="/" rel="alternate"></link><published>2021-10-18T00:00:00+00:00</published><updated>2021-10-18T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-10-18:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains bug fixes. The …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.10.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains bug fixes. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8101-release-highlights"&gt;Lucene 8.10.1 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="bug-fixes"&gt;Bug fixes&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;MultiCollector now handles single leaf collector that wants to skip low-scoring hits but the combined score mode doesn't allow it.&lt;/li&gt;
-&lt;li&gt;Fix for sort optimization with search_after that was wrongly skipping document whose values are equal to the last value of the previous page.&lt;/li&gt;
-&lt;li&gt;Fix for sort optimization with a chunked bulk scorer that was wrongly skipping documents.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_10_1/changes/Changes.html"&gt;https://lucene.apache.org/core/8_10_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.10.0 available</title><link href="/" rel="alternate"></link><published>2021-09-27T00:00:00+00:00</published><updated>2021-09-27T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-09-27:/</id><summary type= [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.10.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-8100-release-highlights"&gt;Lucene 8.10.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="new-features"&gt;New features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Multi-valued fields are now supported in numeric range facet counting&lt;/li&gt;
-&lt;li&gt;Added new analyzer for Telugu&lt;/li&gt;
-&lt;li&gt;Near-real-time readers opened from an IndexCommit can now sort their leaves&lt;/li&gt;
-&lt;li&gt;SimpleText codec now implements skipping for its postings lists&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Performance improvements for faceting, including a new protected API to control which fields are counted for drill-down during drill sideways, and optimized drill sideways iterating&lt;/li&gt;
-&lt;li&gt;RegexpQuery's detection of adversarial (ReDoS) regular expressions is improved, catching exotic cases that it missed before, and throwing TooComplexToDeterminizeException&lt;/li&gt;
-&lt;li&gt;Speedup for computing the leading prefix and trailing suffix from an Automaton, and for managing powersets during determinize&lt;/li&gt;
-&lt;li&gt;Speedups for stored fields retrieval with the default codec (BEST_SPEED)&lt;/li&gt;
-&lt;li&gt;IndexWriter uses less RAM when buffering documents, especially in the case of many unique fields&lt;/li&gt;
-&lt;li&gt;forceMerge will now merge any number of segments at once, making it much faster in many cases&lt;/li&gt;
-&lt;li&gt;Compression improvements for docvalues storage&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;... plus a number of exciting bug fixes!&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_10_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_10_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.9.0 available</title><link href="/" rel="alternate"></link><published>2021-06-16T00:00:00+00:00</published><updated>2021-06-16T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-06-16:/</id><summary type=" [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.9.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-890-release-highlights"&gt;Lucene 8.9.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Compression was added to SortedSet DocValues, which allowed to significantly reduce their size on disk.&lt;/li&gt;
-&lt;li&gt;BM25FQuery was extended to handle similarities beyond BM25Similarity. It was renamed to CombinedFieldQuery to reflect its more general scope.&lt;/li&gt;
-&lt;li&gt;A new PatternTypingFilter was added to allow setting a type attribute on tokens based on a configured set of regular expressions.&lt;/li&gt;
-&lt;li&gt;An option was added to supply a custom leaf sorter for IndexWriter and DirectoryReader, which allows to speed up sort queries with a provided sort criteria.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_9_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_9_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.8.2 available</title><link href="/" rel="alternate"></link><published>2021-04-12T00:00:00+00:00</published><updated>2021-04-12T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-04-12:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains three bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.8.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains three bug fixes. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-882-release-highlights"&gt;Lucene 8.8.2 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;LUCENE-9870: Fix Circle2D intersectsLine t-value (distance) range clamp&lt;/li&gt;
-&lt;li&gt;LUCENE-9744: NPE on a degenerate query in MinimumShouldMatchIntervalsSource$MinimumMatchesIterator.getSubMatches().&lt;/li&gt;
-&lt;li&gt;LUCENE-9762: DoubleValuesSource.fromQuery (also used by FunctionScoreQuery.boostByQuery) could throw an exception when the query implements TwoPhaseIterator and when the score is requested repeatedly&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_8_2/changes/Changes.html"&gt;https://lucene.apache.org/core/8_8_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.8.1 available</title><link href="/" rel="alternate"></link><published>2021-02-22T00:00:00+00:00</published><updated>2021-02-22T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-02-22:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.8.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-881-release-highlights"&gt;Lucene 8.8.1 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;No changes from 8.8.0&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_8_1/changes/Changes.html"&gt;https://lucene.apache.org/core/8_8_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.8.0 available</title><link href="/" rel="alternate"></link><published>2021-01-29T00:00:00+00:00</published><updated>2021-01-29T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2021-01-29:/</id><summary type="ht [...]
-The Lucene PMC is pleased to announce the release of Apache Lucene 8.8&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially …&lt;/p&gt;</summary><content type="html">&lt;p&gt;29/01/2021, Apache Lucene™ 8.8 available
-The Lucene PMC is pleased to announce the release of Apache Lucene 8.8&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;http://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 8.8 Release Highlights:
-LatLonPoint query that accepts an array of LatLonGeometries, support for spatial relationships, &lt;/p&gt;
-&lt;p&gt;XYPoint query that accepts an array of XYGeometries&lt;/p&gt;
-&lt;p&gt;Doc values now allow configuring how to trade compression for retrieval speed&lt;/p&gt;
-&lt;p&gt;Further details of changes are available in the change log available at:
-&lt;a href="http://lucene.apache.org/core/8_8_0/changes/Changes.html"&gt;http://lucene.apache.org/core/8_8_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please report any feedback to the mailing lists:&lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/discussion.html"&gt;http://lucene.apache.org/core/discussion.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Note: The Apache Software Foundation uses an extensive mirroring network for distributing releases. It is possible that the mirror you are using may not have replicated the release yet. If that is the case, please try another mirror. This also applies to Maven access.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.7.0 available</title><link href="/" rel="alternate"></link><published>2020-11-03T00:00:00+00:00</published><updated>20 [...]
-The Lucene PMC is pleased to announce the release of Apache Lucene 8.7.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially …&lt;/p&gt;</summary><content type="html">&lt;p&gt;03/11/2020, Apache Lucene™ 8.7 available
-The Lucene PMC is pleased to announce the release of Apache Lucene 8.7.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;http://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 8.7 Release Highlights:
-Better compression of stored fields. Stored fields now use dictionaries in order to improve the compression ratio when there is a lot of redundancy across documents. This works for both the BEST_SPEED and the BEST_COMPRESSION modes.&lt;/p&gt;
-&lt;p&gt;Faster sorting by field. When a doc-value field is also indexed with points, Lucene now takes advantage of this points index in order to skip documents whose sort value is not competitive.&lt;/p&gt;
-&lt;p&gt;Faster flushing of stored fields when index sorting is enabled. This can significantly speed up indexing when a non-negligible amount of data is stored in the index and index sorting is enabled.&lt;/p&gt;
-&lt;p&gt;Further details of changes are available in the change log available at:
-&lt;a href="http://lucene.apache.org/core/8_7_0/changes/Changes.html"&gt;http://lucene.apache.org/core/8_7_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please report any feedback to the mailing lists:&lt;/p&gt;
-&lt;p&gt;&lt;a href="http://lucene.apache.org/core/discussion.html"&gt;http://lucene.apache.org/core/discussion.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Note: The Apache Software Foundation uses an extensive mirroring network for distributing releases. It is possible that the mirror you are using may not have replicated the release yet. If that is the case, please try another mirror. This also applies to Maven access.&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.6.3 available</title><link href="/" rel="alternate"></link><published>2020-10-07T00:00:00+00:00</published><updated>20 [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no additional bug …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.6.3.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no additional bug fixes over the previous version 8.6.2. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.6.2 available</title><link href="/" rel="alternate"></link><published>2020-09-01T00:00:00+00:00</published><updated>2020-09-01T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-09-01:/</id><summary type="html">&lt;p&gt;The Lucene  [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.6.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-862-bug-fixes"&gt;Lucene 8.6.2 Bug Fixes:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;LUCENE-9478: IndexWriter leaked about 500 byte of heap space for each full-flush, getReader or commit. This was a regression in 6.8.0&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_6_2/changes/Changes.html"&gt;https://lucene.apache.org/core/8_6_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.6.1 available</title><link href="/" rel="alternate"></link><published>2020-08-13T00:00:00+00:00</published><updated>2020-08-13T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-08-13:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.6.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-861-release-highlights"&gt;Lucene 8.6.1 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;LUCENE-9443: The UnifiedHighlighter was closing the underlying reader when there were multiple term-vector fields.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_6_1/changes/Changes.html"&gt;https://lucene.apache.org/core/8_6_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.6.0 available</title><link href="/" rel="alternate"></link><published>2020-07-15T00:00:00+00:00</published><updated>2020-07-15T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-07-15:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.6.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-860-release-highlights"&gt;Lucene 8.6.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;API change in: SimpleFSDireectory, IndexWriterConfig, MergeScheduler, SortFields, SimpleBindings, QueryVisitor, DocValues, CodecUtil.&lt;/li&gt;
-&lt;li&gt;New: IndexWriter merge-on-commit feature to selectively merge small segments on commit, subject to a configurable timeout, to improve search performance by reducing the number of small segments for searching.&lt;/li&gt;
-&lt;li&gt;New: Grouping by range based on DoubleValueSource and LongValueSource.&lt;/li&gt;
-&lt;li&gt;Optimizations: BKD trees and index, DoubleValuesSource/QueryValueSource, UsageTrackingQueryingCachingPolicy, FST, Geometry queries, Points, UniformSplit.&lt;/li&gt;
-&lt;li&gt;Others: Ukrainian analyzer, checksums verification, resource leaks fixes.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_6_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_6_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.5.2 available</title><link href="/" rel="alternate"></link><published>2020-05-26T00:00:00+00:00</published><updated>2020-05-26T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-05-26:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.5.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fixes. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-852-release-highlights"&gt;Lucene 8.5.2 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;LUCENE-9350: Don't cache automata on FuzzyQuery&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_5_2/changes/Changes.html"&gt;https://lucene.apache.org/core/8_5_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.7.3 available</title><link href="/" rel="alternate"></link><published>2020-04-28T00:00:00+00:00</published><updated>2020-04-28T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-04-28:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 1 bugfix in …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.7.3.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 1 bugfix in Lucene. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_7_3/changes/Changes.html"&gt;https://lucene.apache.org/core/7_7_3/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.5.1 available</title><link href="/" rel="alternate"></link><published>2020-04-16T00:00:00+00:00</published><updated>2020-04-16T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-04-16:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.5.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Lucene 8.5.1 Bug Fixes:&lt;/p&gt;
-&lt;p&gt;LUCENE-9300: Index corruption with doc values updates and addIndexes.&lt;/p&gt;
-&lt;p&gt;Further details of changes are available in the change log available at: &lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_5_1/changes/Changes.html"&gt;https://lucene.apache.org/core/8_5_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.5.0 available</title><link href="/" rel="alternate"></link><published>2020-03-24T00:00:00+00:00</published><updated>2020-03-24T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-03-24:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.5.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-850-release-highlights"&gt;Lucene 8.5.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;XYPointField allows you to index points in flat X,Y space and efficiently find documents that fall within a bounding box, distance or arbitrary polygon&lt;/li&gt;
-&lt;li&gt;New query builders on LatLonShape allow you to efficiently find documents with a specific relation to a point or polygon&lt;/li&gt;
-&lt;li&gt;You can now store up to 16 data dimensions in a Point field&lt;/li&gt;
-&lt;li&gt;KoreanTokenizer supports custom dictionaries&lt;/li&gt;
-&lt;li&gt;Binary doc values are now compressed, and term dictionaries have improved compression&lt;/li&gt;
-&lt;li&gt;Index flushes are up to 20% faster if all docvalues updates are updating a single field to the same value&lt;/li&gt;
-&lt;li&gt;The index of stored fields and term vectors is now stored off-heap&lt;/li&gt;
-&lt;li&gt;Query parsers based on QueryBuilder can boost particular terms or synonyms by setting BoostAttribute values on a token stream&lt;/li&gt;
-&lt;li&gt;Intervals queries correctly handle repeated subterms in ordered and unordered sources&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_5_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_5_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.4.1 available</title><link href="/" rel="alternate"></link><published>2020-01-13T00:00:00+00:00</published><updated>2020-01-13T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2020-01-13:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.4.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-841-release-highlights"&gt;Lucene 8.4.1 Release Highlights:&lt;/h3&gt;
-&lt;p&gt;(No Changes since 8.4.0)&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.4.0 available</title><link href="/" rel="alternate"></link><published>2019-12-29T00:00:00+00:00</published><updated>2019-12-29T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-12-29:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.4.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.4.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-840-release-highlights"&gt;Lucene 8.4.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;LatLonShape now supports the "CONTAINS" relation, which enables to find all indexed shapes that contain the query shape.&lt;/li&gt;
-&lt;li&gt;Concurrent search is getting more efficient by allowing collectors to share information across threads in order to more efficiently skip non-competitive hits.&lt;/li&gt;
-&lt;li&gt;Faster FST lookups on dense nodes.&lt;/li&gt;
-&lt;li&gt;Postings are now decoded using SIMD instructions.&lt;/li&gt;
-&lt;li&gt;LRUQueryCache includes new heuristics that prevent caching from hurting latency too much.&lt;/li&gt;
-&lt;li&gt;LatLonShape builds a more efficient tree that is expected to translate into search speed improvements.&lt;/li&gt;
-&lt;li&gt;BaseDirectoryReader no longer sums up document counts across leaves eagerly, allowing for more efficient reader views that hide a subset of documents.&lt;/li&gt;
-&lt;li&gt;The index on top of BKD trees is now stored off-heap with MMapDirectory.&lt;/li&gt;
-&lt;li&gt;Simple Intervals queries support highlighting.&lt;/li&gt;
-&lt;li&gt;Reading DocValues can be interrupted when timeout is exceeded.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_4_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_4_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.3.1 available</title><link href="/" rel="alternate"></link><published>2019-12-03T00:00:00+00:00</published><updated>2019-12-03T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-12-03:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.3.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-831-release-highlights"&gt;Lucene 8.3.1 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Bugfix: MultiTermIntervalsSource.visit() was not calling back to its visitor&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_3_1/changes/Changes.html"&gt;https://lucene.apache.org/core/8_3_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.3.0 available</title><link href="/" rel="alternate"></link><published>2019-11-02T00:00:00+00:00</published><updated>2019-11-02T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-11-02:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.3.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-830-release-highlights"&gt;Lucene 8.3.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;New SpanishMinimalStemFilter&lt;/li&gt;
-&lt;li&gt;New "export all terms and doc freqs" feature to Luke with delimiters&lt;/li&gt;
-&lt;li&gt;Composite Matches from multiple subqueries now allow access to their submatches, and a new NamedMatches API allows marking of subqueries and a simple way to find which subqueries have matched on a given&lt;/li&gt;
-&lt;li&gt;Range Query For Multiple Connected Ranges&lt;/li&gt;
-&lt;li&gt;LatLonDocValuesPointInPolygonQuery for LatLonDocValuesField&lt;/li&gt;
-&lt;li&gt;New UniformSplitPostingsFormat (name "UniformSplit") primarily benefiting in simplicity and extensibility&lt;/li&gt;
-&lt;li&gt;New STUniformSplitPostingsFormat (name "SharedTermsUniformSplit") that shares a single internal term dictionary across fields&lt;/li&gt;
-&lt;li&gt;DisjunctionMaxQuery more efficiently leverages impacts to skip non-competitive hits&lt;/li&gt;
-&lt;li&gt;BooleanQuery with no scoring clause can now early terminate the query when the total hits is not requested&lt;/li&gt;
-&lt;li&gt;Matches on wildcard queries will defer building their full disjunction until a MatchesIterator is pulled&lt;/li&gt;
-&lt;li&gt;spatial-extras quad and packed quad prefix trees now index points faster&lt;/li&gt;
-&lt;li&gt;Add additional leaf node level optimizations in LatLonShapeBoundingBoxQuery&lt;/li&gt;
-&lt;li&gt;Improve performance of WITHIN and DISJOINT queries for Shape queries by doing just one pass whenever possible&lt;/li&gt;
-&lt;li&gt;Introduce shared count based early termination across multiple slices&lt;/li&gt;
-&lt;li&gt;Blocktree's seekExact now short-circuits false if the term isn't in the min-max range of the segment. Large perf gain for ID/time like data when populated sequentially&lt;/li&gt;
-&lt;li&gt;Show SPI names instead of class names in Luke Analysis tab&lt;/li&gt;
-&lt;li&gt;GraphTokenStreamFiniteStrings preserves all Token attributes through its finite strings TokenStreams&lt;/li&gt;
-&lt;li&gt;Introduced SpanPositionRange into XML Query Parser&lt;/li&gt;
-&lt;li&gt;Use a sort key instead of true distance in NearestNeighbor&lt;/li&gt;
-&lt;li&gt;Tessellator labels the edges of the generated triangles whether they belong to the original polygon&lt;/li&gt;
-&lt;li&gt;Use exact distance between point and bounding rectangle in FloatPointNearestNeighbor&lt;/li&gt;
-&lt;li&gt;The Korean analyzer now splits tokens on boundaries between digits and alphabetic characters&lt;/li&gt;
-&lt;li&gt;MoreLikeThis is biased for uncommon fields&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_3_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_3_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.2.0 available</title><link href="/" rel="alternate"></link><published>2019-07-26T00:00:00+00:00</published><updated>2019-07-26T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-07-26:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.2.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-820-release-highlights"&gt;Lucene 8.2.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="api-changes"&gt;API Changes:&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Intervals queries has been moved from the sandbox to the queries module.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="new-features"&gt;New Features&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;New XYShape Field and Queries for indexing and querying general cartesian geometries.&lt;/li&gt;
-&lt;li&gt;Snowball stemmer/analyzer for the Estonian language.&lt;/li&gt;
-&lt;li&gt;Provide a FeatureSortfield to allow sorting search hits by descending value of a feature.&lt;/li&gt;
-&lt;li&gt;Add new KoreanNumberFilter that can change Hangul character to number and process decimal point.&lt;/li&gt;
-&lt;li&gt;Add doc-value support to range fields.&lt;/li&gt;
-&lt;li&gt;Add monitor subproject (previously Luwak monitoring library) that allows a stream of documents to be matched against a set of registered queriesin an efficient manner.&lt;/li&gt;
-&lt;li&gt;Add a numeric range query in sandbox that takes advantage of index sorting.Add a numeric range query in sandbox that takes advantage of index sorting.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="optimizations"&gt;Optimizations&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Use exponential search instead of binary search in IntArrayDocIdSet#advance method.&lt;/li&gt;
-&lt;li&gt;Use incoming thread for execution if IndexSearcher has an executor. Now caller threads execute at least one search on an index even if there is an executor provided to minimize thread context switching.&lt;/li&gt;
-&lt;li&gt;New storing strategy for BKD tree leaves with low cardinality that can lower storage costs and It can be used at search time to speed up queries.&lt;/li&gt;
-&lt;li&gt;Load frequencies lazily only when needed in BlockDocsEnum and BlockImpactsEverythingEnum.&lt;/li&gt;
-&lt;li&gt;Phrase queries now leverage impacts.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_2_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_2_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.7.2 available</title><link href="/" rel="alternate"></link><published>2019-06-04T00:00:00+00:00</published><updated>2019-06-04T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-06-04:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 9 bugfixes in …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.7.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 9 bugfixes in Lucene. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_7_2/changes/Changes.html"&gt;https://lucene.apache.org/core/7_7_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.1.1 available</title><link href="/" rel="alternate"></link><published>2019-05-28T00:00:00+00:00</published><updated>2019-05-28T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-05-28:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.1.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over 8.1.0. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.1.0 available</title><link href="/" rel="alternate"></link><published>2019-05-16T00:00:00+00:00</published><updated>2019-05-16T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-05-16:/</id><summary type="html">&lt;p&gt;The Lucene  [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.1.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-810-release-highlights"&gt;Lucene 8.1.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;A query introspection API has been introduced.&lt;/li&gt;
-&lt;li&gt;Luke, well-known GUI for inspecting Lucene indexes, now added as a Lucene module&lt;/li&gt;
-&lt;li&gt;Merging dimensional points to use radix partitioning, which has also been optimized&lt;/li&gt;
-&lt;li&gt;Bugfix: LatLonShapePolygonQuery returns incorrect WITHIN results with shared boundaries&lt;/li&gt;
-&lt;li&gt;TieredMergePolicy#findForcedMerges now tries to create the cheapest merges&lt;/li&gt;
-&lt;li&gt;Build point writers in the BKD tree only when they are needed&lt;/li&gt;
-&lt;li&gt;SynonymQuery can now deboost the document frequency of each term when blending synonym scores&lt;/li&gt;
-&lt;li&gt;ConstantScoreQuery can early terminate if minimum score &amp;gt; constant score (total hits are not requested)&lt;/li&gt;
-&lt;li&gt;DateRangePrefixTree can now parse more precise dates&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_1_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_1_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.6.6 available</title><link href="/" rel="alternate"></link><published>2019-04-05T00:00:00+00:00</published><updated>2019-04-05T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-04-05:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-pla&lt;/p&gt;
-&lt;p&gt;This release contains no change over …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.6.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-pla&lt;/p&gt;
-&lt;p&gt;This release contains no change over 6.6.4. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.6"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.6.6&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 8.0.0 available</title><link href="/" rel="alternate"></link><published>2019-03-14T00:00:00+00:00</published><updated>2019-03-14T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-03-14:/</id><summary type="html"> [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 8.0.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-800-release-highlights"&gt;Lucene 8.0.0 Release Highlights:&lt;/h3&gt;
-&lt;h4 id="query-execution"&gt;Query execution&lt;/h4&gt;
-&lt;p&gt;Term queries, phrase queries and boolean queries introduced new optimization that enables efficient skipping over non-competitive documents when the total hit count is not needed. Depending on the exact query and data distribution, queries might run between a few percents slower and many times faster, especially term queries and pure disjunctions.&lt;/p&gt;
-&lt;p&gt;In order to support this enhancement, some API changes have been made:
- * TopDocs.totalHits is no longer a long but an object that gives a lower bound of the actual hit count.
- * IndexSearcher's search and searchAfter methods now only compute total hit counts accurately up to 1,000 in order to enable this optimization by default.
- * Queries are now required to produce non-negative scores.&lt;/p&gt;
-&lt;h4 id="codecs"&gt;Codecs&lt;/h4&gt;
-&lt;ul&gt;
-&lt;li&gt;Postings now index score impacts alongside skip data. This is how term queries optimize collection of top hits when hit counts are not needed.&lt;/li&gt;
-&lt;li&gt;Doc values introduced jump tables, so that advancing runs in constant time. This is especially helpful on sparse fields.&lt;/li&gt;
-&lt;li&gt;The terms index FST is now loaded off-heap for non-primary-key fields using MMapDirectory, reducing heap usage for such fields.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;h4 id="custom-scoring"&gt;Custom scoring&lt;/h4&gt;
-&lt;p&gt;The new FeatureField allows efficient integration of static features such as a pagerank into the score. Furthermore, the new LongPoint#newDistanceFeatureQuery and LatLonPoint#newDistanceFeatureQuery methods allow boosting by recency and geo-distance respectively. These new helpers are optimized for the case when total hit counts are not needed. For instance if the pagerank has a significant weight in your scores, then Lucene might be able to skip over documents that have a low p [...]
-&lt;p&gt;Further details of changes are available in the change log available at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/8_0_0/changes/Changes.html"&gt;https://lucene.apache.org/core/8_0_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.7.1 available</title><link href="/" rel="alternate"></link><published>2019-03-01T00:00:00+00:00</published><updated>2019-03-01T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-03-01:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.7.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over 7.7.0. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.7.0 available</title><link href="/" rel="alternate"></link><published>2019-02-11T00:00:00+00:00</published><updated>2019-02-11T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2019-02-11:/</id><summary type="html">&lt;p&gt;The Lucene  [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.7.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-770-release-highlights"&gt;Lucene 7.7.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix LatLonShape WITHIN queries that fail with Multiple search Polygons that share the dateline.&lt;/li&gt;
-&lt;li&gt;LatLonShape's within and disjoint queries can return false positives with indexed multi-shapes.&lt;/li&gt;
-&lt;li&gt;ExitableDirectoryReader may now time out queries that run on points such as range queries or geo queries.&lt;/li&gt;
-&lt;li&gt;StandardTokenizer and UAX29URLEmailTokenizer now support Unicode 9.0, and provide Unicode UTS#51 v11.0 Emoji tokenization with the "&lt;EMOJI&gt;" token type.&lt;/li&gt;
-&lt;li&gt;TopFieldCollector can now early-terminates queries when sorting by SortField.DOC.&lt;/li&gt;
-&lt;li&gt;Speed up merging segments of points with data dimensions by only sorting on the indexed dimensions.&lt;/li&gt;
-&lt;li&gt;The KoreanTokenizer no longer splits unknown words on combining diacritics and detects script boundaries more accurately with Character#UnicodeScript#of.&lt;/li&gt;
-&lt;li&gt;Change LatLonShape encoding to use 4 bytes Per Dimension.&lt;/li&gt;
-&lt;li&gt;BufferedUpdates now uses an optimized storage for buffering docvalues updates that can save up to 80% of the heap used compared to the previous implementation and uses non-object based datastructures.&lt;/li&gt;
-&lt;li&gt;Moved to the default accepted overhead ratio for packet ints in DocValuesFieldUpdates yields an up-to 4x performance improvement when applying doc values updates.&lt;/li&gt;
-&lt;li&gt;Doc-value updates get applied faster by sorting with quicksort, rather than an in-place mergesort, which needs to perform fewer swaps.&lt;/li&gt;
-&lt;li&gt;Decrease I/O pressure when merging high dimensional points.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_7_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_7_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.6.0 available</title><link href="/" rel="alternate"></link><published>2018-12-14T00:00:00+00:00</published><updated>2018-12-14T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-12-14:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.6.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-760-release-highlights"&gt;Lucene 7.6.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Index sorting corruption due to numeric overflow has been fixed. Indices affected by this bug can be detected by running the CheckIndex command on a 7.6+ release distribution.&lt;/li&gt;
-&lt;li&gt;Better tessellation processing of Polygons including graceful exceptions for detecting invalid shapes.&lt;/li&gt;
-&lt;li&gt;Points codec now supports &lt;code&gt;selective indexing&lt;/code&gt;; the ability to designate dimensions as as "data only" dimensions that do not affect construction of the index.&lt;/li&gt;
-&lt;li&gt;New Simple WKT Shape Parser builds lucene geometries (polygons, lines, rectangles) from WKT format.&lt;/li&gt;
-&lt;li&gt;New LatLonShapeLineQuery queries indexed shapes with arbitrary lines.&lt;/li&gt;
-&lt;li&gt;analyzeGraphPhrase query builder creates one phrase query per finite strings in the graph based on slop parameter.&lt;/li&gt;
-&lt;li&gt;Performance in PerFieldMergeState#FilterFieldInfos has been improved from O(N) to O(1) lookup time.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_6_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_6_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.5.0 available</title><link href="/" rel="alternate"></link><published>2018-09-24T00:00:00+00:00</published><updated>2018-09-24T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-09-24:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.5.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-750-release-highlights"&gt;Lucene 7.5.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;IndexWriter#deleteDocs(Query... query) applies deletes to wrong documents if the index is sorted.&lt;/li&gt;
-&lt;li&gt;TieredMergePolicy now respects maxSegmentSizeMB by default when executing findForcedMerges and findForcedDeletesMerges.&lt;/li&gt;
-&lt;li&gt;A new points based Shape Indexing and Searching that decomposes shapes into a triangular mesh and indexes individual triangles as a 6 dimension point.&lt;/li&gt;
-&lt;li&gt;A new ByteBuffer based Directory implementation that aims to replace the deprecated RAMDirectory.&lt;/li&gt;
-&lt;li&gt;The UnifiedHighlighter can now use the MatchesIterator API to highlight any query more accurately.&lt;/li&gt;
-&lt;li&gt;TopFieldComparator can now stop comparing documents if the index is sorted, even if hits still need to be visited to compute the hit count.&lt;/li&gt;
-&lt;li&gt;TieredMergePolicy can control how aggressively deletes should be reclaimed with the new deletesPctAllowed setting.&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_5_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_5_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.6.5 available</title><link href="/" rel="alternate"></link><published>2018-07-03T00:00:00+00:00</published><updated>2018-07-03T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-07-03:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.5.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over 6.6.4. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.5"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.6.5&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.4.0 available</title><link href="/" rel="alternate"></link><published>2018-06-27T00:00:00+00:00</published><updated>2018-06-27T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-06-27:/</id><summary type="html"> [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.4.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/downloads.html"&gt;https://lucene.apache.org/core/downloads.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_4_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_4_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.6.4 available</title><link href="/" rel="alternate"></link><published>2018-05-15T00:00:00+00:00</published><updated>2018-05-15T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-05-15:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.4.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains no change over 6.6.3. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.4"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.6.4&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.3.1 available</title><link href="/" rel="alternate"></link><published>2018-05-15T00:00:00+00:00</published><updated>2018-05-15T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-05-15:/</id><summary type="html"> [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one build change …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.3.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one build change. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/mirrors-core-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_3_1/changes/Changes.html"&gt;https://lucene.apache.org/core/7_3_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.3.0 available</title><link href="/" rel="alternate"></link><published>2018-04-04T00:00:00+00:00</published><updated>2018-04-04T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-04-04:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.3.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/mirrors-core-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_3_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_3_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.6.3 available</title><link href="/" rel="alternate"></link><published>2018-03-07T00:00:00+00:00</published><updated>2018-03-07T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-03-07:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one build change …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.3.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one build change. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/mirrors-core-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/6_6_3/changes/Changes.html"&gt;https://lucene.apache.org/core/6_6_3/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.2.1 available</title><link href="/" rel="alternate"></link><published>2018-01-15T00:00:00+00:00</published><updated>2018-01-15T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2018-01-15:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.2.1.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_2_1/changes/Changes.html"&gt;https://lucene.apache.org/core/7_2_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-721-bug-fix"&gt;Lucene 7.2.1 Bug Fix:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Fix advanceExact on SortedNumericDocValues produced by Lucene54DocValuesProducer.&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.2.0 available</title><link href="/" rel="alternate"></link><published>2017-12-21T00:00:00+00:00</published><updated>2017-12-21T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-12-21:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.2.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.2.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_2_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_2_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-720-release-highlights"&gt;Lucene 7.2.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Specific query implementations can now opt out of caching.&lt;/li&gt;
-&lt;li&gt;TopFieldDocCollector can now early terminate collection of matches when the index is sorted and the total hit count is not requested.&lt;/li&gt;
-&lt;li&gt;IndexWriter#flushNextBuffer gives more fine-grained control over the memory usage of IndexWriter.&lt;/li&gt;
-&lt;li&gt;Fixed document accounting in IndexWriter.&lt;/li&gt;
-&lt;li&gt;Query scores can be exposed in a ValuesSource using DoubleValuesSource.fromQuery().&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 5.5.5 available</title><link href="/" rel="alternate"></link><published>2017-10-24T00:00:00+00:00</published><updated>2017-10-24T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-10-24:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.5.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.5.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains one bug fix. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/mirrors-core-latest-redir.html"&gt;https://lucene.apache.org/core/mirrors-core-latest-redir.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/5_5_5/changes/Changes.html"&gt;https://lucene.apache.org/core/5_5_5/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;This release includes a critical security fix. Details:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Disallow resolving of external entities in queryparser/xml/CoreParser by default.&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.6.2 available</title><link href="/" rel="alternate"></link><published>2017-10-18T00:00:00+00:00</published><updated>2017-10-18T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-10-18:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.2.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.2"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.6.2&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/6_6_2/changes/Changes.html"&gt;https://lucene.apache.org/core/6_6_2/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;This release includes a critical security fix. Details:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;Disallow resolving of external entities in queryparser/xml/CoreParser by default.&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.1.0 available</title><link href="/" rel="alternate"></link><published>2017-10-17T00:00:00+00:00</published><updated>2017-10-17T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-10-17:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.1.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.1.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/7.1.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/7.1.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_1_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_1_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-710-release-highlights"&gt;Lucene 7.1.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;New Geo3D shapes for non-spherical planet models&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Serialization and deserialization support for Geo3D&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new CoveringQuery, whose required number of matching clauses can be defined per document&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;New BengaliAnalyzer for Bengali language&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A point based range field called LatLonBoundingBox&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;FloatPointNearestNeighbor, an N-dimensional FloatPoint K-nearest-neighbor search implementation&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Faster default taxonomy cache&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Support for computing facet counts for individual numeric values via LongValueFacetCounts&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Faster geo-distance queries in case of dense single-valued fields when most documents match&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Better heuristics in IndexOrDocValuesQuery&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Optimized builds for OrdinalMap (used by SortedSetDocValuesFacetCounts and others)&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.0.1 available</title><link href="/" rel="alternate"></link><published>2017-10-06T00:00:00+00:00</published><updated>2017-10-06T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-10-06:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.0.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 1 bug fix …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.0.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains 1 bug fix since the 7.0.0 release:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;ConjunctionScorer.getChildren was failing to return all child scorers&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/7.0.1"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/7.0.1&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_0_1/changes/Changes.html"&gt;https://lucene.apache.org/core/7_0_1/changes/Changes.html&lt;/a&gt;&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 7.0.0 available</title><link href="/" rel="alternate"></link><published>2017-09-20T00:00:00+00:00</published><updated>2017-09-20T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-09-20:/</id><summary type="ht [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 7.0.0.&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/7.0.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/7.0.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;Please read CHANGES.txt for a full list of new features and changes:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://lucene.apache.org/core/7_0_0/changes/Changes.html"&gt;https://lucene.apache.org/core/7_0_0/changes/Changes.html&lt;/a&gt;&lt;/p&gt;
-&lt;h3 id="lucene-700-release-highlights"&gt;Lucene 7.0.0 Release Highlights:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Doc values switched from random access to iterators.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The 7.0 codec now sparsely encodes sparse doc values and length normalization factors ("norms"), which also translates to optimization in both indexing, and search on sparse values. With these changes, you finally only pay for what you actually use with doc values, in index size, indexing performance, etc.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Index time boost for documents is now removed.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Substantial performance gains for delete and update heavy Lucene usage; see http://blog.mikemccandless.com/2017/07/lucene-gets-concurrent-deletes-and.html for details&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Query scoring is now simpler with removal of coord factor, and query normalization.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Classic query parser no longer splits on whitespaces.  This enables better multi-word synonym support.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The version of Lucene that created the index segment would be recorded, along with the version that last modified the index.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;IndexWriter, used to add, update and delete documents in your index, will no longer accept broken token offsets sometimes produced by mis-behaving token filters.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;IndexReader exposes methods that are typically used to manage resources whose lifetime needs to mimic the lifetime of segments/indexes, typically caches. They have been made much less trappy.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The dimensional points API now takes a field name up front to offer per-field points access, matching how the doc values APIs work.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The PostingsHighlighter was removed.  Migrating to the UnifiedHighlighter should be straight-forward.&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;
-&lt;p&gt;Apache Lucene was tested to be fully compatible with the release of Java 9 and its module system Jigsaw, coming out tomorrow on September 21st!&lt;/p&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.6.1 available</title><link href="/" rel="alternate"></link><published>2017-09-07T00:00:00+00:00</published><updated>2017-09-07T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-09-07:/</id><summary type=" [...]
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.1"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.6.1&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_6_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;p&gt;This release contains 2 bug fixes since the 6.6.0 release:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Documents with multiple points that should match might not match on a memory index&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A query which has only one synonym with AND as the default operator would
-   wrongly translate as an AND between the query term and the synonym&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.6.0 available</title><link href="/" rel="alternate"></link><published>2017-06-06T00:00:00+00:00</published><updated>2017-06-06T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-06-06:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.6.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.6.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.6.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_6_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;A concurrent SortedSet facets implementation&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;spatial-extras HeatmapFacetCounter will now short-circuit it's work when Bits.MatchNoBits is passed&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;OfflineSorter now passes the total number of items it will write to getWriter()&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Move dictionary for Ukrainian analyzer to external dependency&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;SortedSetDocValuesReaderState now implements Accountable so one can see how much RAM it is using&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;OfflineSorter can now run concurrently if you pass it an optional ExecutorService Sorted set facets now
-use sparse storage when collecting hits, when appropriate&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;PostingsHighlighter has been deprecated in favour of the UnifiedHighlighter&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.5.1 available</title><link href="/" rel="alternate"></link><published>2017-04-27T00:00:00+00:00</published><updated>2017-04-27T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-04-27:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.5.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.5.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.5.1"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.5.1&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_5_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;p&gt;This release contains 3 bug fixes since the 6.5.0 release:&lt;/p&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Fixed join queries to not reference IndexReaders, as it could cause leaks if they are cached.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Made LRUQueryCache delegate the scoreSupplier method.&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Fixed index sorting to work with sparse numeric and binary docvalues field&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.5.0 available</title><link href="/" rel="alternate"></link><published>2017-03-27T00:00:00+00:00</published><updated>2017-03-27T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-03-27:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.5.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.5.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.5.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.5.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_5_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;It is now possible filter out duplicates in the NRT suggester&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;SimpleQueryString now supports default fuziness&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;IndexWriter can return the list of visible field names&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;DisjunctionScorer now supports returning the matching children clauses&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new FunctionScoreQuery that modifies the internal query's score using the per-document values&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new FunctionMatchQuery that returns any documents with a value that matches a predicate&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new WordDelimiterGraphFilter that outputs a correct graph structure for multi-token expansion at query time&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new PatternTokenizer that uses Lucene's RegExp implementation&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;RangeFieldQuery now supports CROSSES relation&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new IndexOrDocValuesQuery that uses either an index (points or terms) or doc values in order to run a (range, geo box and distance) query, depending which one is more efficient&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;index-time boosts are deprecated&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Term filters are no longer cached&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Compound filters are cached earlier than regular queries&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;BKDReader now calls grow on larger increments&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;LatLonPointInPolygonQuery are faster&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;LatLonPointDistanceQuery now skips distance computations more often&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;To-parent block joins now implements two-phase iteration&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Point ranges that match most documents are faster&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;PointValues#estimatePointCount is faster with Relation.CELL_INSIDE_QUERY&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Segments are now also sorted during flush, and merging on a sorted index is substantially faster by using some of the same bulk merge optimizations that non-sorted merging uses&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene 6.4.2 and Apache Solr 6.4.2 Available</title><link href="/" rel="alternate"></link><published>2017-03-07T00:00:00+00:00</published><updated>2017-03-07T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-03-07:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.2&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.2&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.4.2"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.4.2&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_4_2/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;Fixed: CommonGramsQueryFilter was producing a disconnected token graph, messing up phrase queries during query parsing&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 5.5.4 available</title><link href="/" rel="alternate"></link><published>2017-02-15T00:00:00+00:00</published><updated>2017-02-15T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-02-15:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.4&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.4&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/5.5.4"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/5.5.4&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/5_5_4/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Made stored fields reclaim native memory more aggressively&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Fixed a potential memory leak with LRUQueryCache and (Span)TermQuery&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;MmapDirectory's unmapping code is now compatible with Java 9 (EA build 150 and later)&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.4.1 available</title><link href="/" rel="alternate"></link><published>2017-02-06T00:00:00+00:00</published><updated>2017-02-06T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-02-06:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.1&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-TThe release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.4.1"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.4.1&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_4_1/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Javadocs now build successfully with Java 8u121&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Fixed memory leak in the case that TermQuery or SpanTermQuery objects that wrap a TermContext were cached&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Fixed native memory leak when the codec is configured with the BEST_COMPRESSION option&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;AnalyzingInfixSuggester now only opens an IndexWriter when changes need to be applied&lt;/p&gt;
-&lt;/li&gt;
-&lt;/ul&gt;</content><category term="core/news"></category></entry><entry><title>Apache Lucene™ 6.4.0 available</title><link href="/" rel="alternate"></link><published>2017-01-23T00:00:00+00:00</published><updated>2017-01-23T00:00:00+00:00</updated><author><name>Lucene Developers</name></author><id>tag:None,2017-01-23:/</id><summary type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes …&lt;/p&gt;</summary><content type="html">&lt;p&gt;The Lucene PMC is pleased to announce the release of Apache Lucene 6.4.0&lt;/p&gt;
-&lt;p&gt;Apache Lucene is a high-performance, full-featured text search engine
-library written entirely in Java. It is a technology suitable for nearly
-any application that requires full-text search, especially cross-platform.&lt;/p&gt;
-&lt;p&gt;This release contains numerous bug fixes, optimizations, and
-improvements, some of which are highlighted below.
-The release is available for immediate download at:&lt;/p&gt;
-&lt;p&gt;&lt;a href="https://www.apache.org/dyn/closer.lua/lucene/java/6.4.0"&gt;https://www.apache.org/dyn/closer.lua/lucene/java/6.4.0&lt;/a&gt;&lt;/p&gt;
-&lt;p&gt;See the &lt;a href="/core/6_4_0/changes/Changes.html"&gt;CHANGES.txt&lt;/a&gt; file included with the
-release for a full list of changes and further details.&lt;/p&gt;
-&lt;h3 id="highlights-of-this-lucene-release-include"&gt;Highlights of this Lucene release include:&lt;/h3&gt;
-&lt;ul&gt;
-&lt;li&gt;
-&lt;p&gt;Lucene's best efforts to un-map memory mapped files with "MMapDirectory" now work with the latest Java9 early access builds&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new similarity "BooleanSimilarity" that gives terms a score that is equal to their query boost&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;The axiomatic family of similarities (6 in total) based on https://www.eecis.udel.edu/~hfang/pubs/sigir05-axiom.pdf&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new token filter "SynonymGraphFilter" that outputs a correct graph structure for multi-token synonyms at query time&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;Graph token streams, such as those produced by the "SynonymGraphFilter", are now handled accurately by query parsers&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;A new collector "DocValuesStatsCollector" gives the ability to compute statistics on DocValues field&lt;/p&gt;
-&lt;/li&gt;
-&lt;li&gt;
-&lt;p&gt;It is now possible to filter "SortedDocValues" and "SortedSetDocValues" terms enum with a compiled automaton&lt;/p&gt;
-&lt;/li&gt;
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