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Posted to commits@druid.apache.org by vo...@apache.org on 2023/05/12 16:48:09 UTC
[druid-website] branch asf-staging updated: update for 26
This is an automated email from the ASF dual-hosted git repository.
vogievetsky pushed a commit to branch asf-staging
in repository https://gitbox.apache.org/repos/asf/druid-website.git
The following commit(s) were added to refs/heads/asf-staging by this push:
new 7ae41e73 update for 26
7ae41e73 is described below
commit 7ae41e73817c03cf09d0a2af4fecab770956932b
Author: Vadim Ogievetsky <va...@ogievetsky.com>
AuthorDate: Fri May 12 09:47:50 2023 -0700
update for 26
---
docs/26.0.0/About-Experimental-Features.html | 8 +
docs/26.0.0/Aggregations.html | 8 +
docs/26.0.0/ApproxHisto.html | 8 +
docs/26.0.0/Batch-ingestion.html | 8 +
docs/26.0.0/Booting-a-production-cluster.html | 8 +
docs/26.0.0/Broker-Config.html | 8 +
docs/26.0.0/Broker.html | 8 +
docs/26.0.0/Build-from-source.html | 8 +
docs/26.0.0/Cassandra-Deep-Storage.html | 8 +
docs/26.0.0/Cluster-setup.html | 8 +
docs/26.0.0/Compute.html | 8 +
docs/26.0.0/Concepts-and-Terminology.html | 8 +
docs/26.0.0/Configuration.html | 8 +
docs/26.0.0/Contribute.html | 8 +
docs/26.0.0/Coordinator-Config.html | 8 +
docs/26.0.0/Coordinator.html | 8 +
docs/26.0.0/DataSource.html | 8 +
docs/26.0.0/DataSourceMetadataQuery.html | 8 +
docs/26.0.0/Data_formats.html | 8 +
docs/26.0.0/Deep-Storage.html | 8 +
docs/26.0.0/Design.html | 8 +
docs/26.0.0/DimensionSpecs.html | 8 +
docs/26.0.0/Download.html | 8 +
docs/26.0.0/Druid-Personal-Demo-Cluster.html | 8 +
docs/26.0.0/Druid-vs-Cassandra.html | 8 +
docs/26.0.0/Druid-vs-Elasticsearch.html | 8 +
docs/26.0.0/Druid-vs-Hadoop.html | 8 +
docs/26.0.0/Druid-vs-Impala-or-Shark.html | 8 +
docs/26.0.0/Druid-vs-Redshift.html | 8 +
docs/26.0.0/Druid-vs-Spark.html | 8 +
docs/26.0.0/Druid-vs-Vertica.html | 8 +
docs/26.0.0/Evaluate.html | 8 +
docs/26.0.0/Examples.html | 8 +
docs/26.0.0/Filters.html | 8 +
docs/26.0.0/Firehose.html | 8 +
docs/26.0.0/GeographicQueries.html | 8 +
docs/26.0.0/Granularities.html | 8 +
docs/26.0.0/GroupByQuery.html | 8 +
docs/26.0.0/Hadoop-Configuration.html | 8 +
docs/26.0.0/Having.html | 8 +
docs/26.0.0/Historical-Config.html | 8 +
docs/26.0.0/Historical.html | 8 +
docs/26.0.0/Home.html | 8 +
docs/26.0.0/Including-Extensions.html | 8 +
docs/26.0.0/Indexing-Service-Config.html | 8 +
docs/26.0.0/Indexing-Service.html | 8 +
docs/26.0.0/Ingestion-FAQ.html | 8 +
docs/26.0.0/Ingestion-overview.html | 8 +
docs/26.0.0/Ingestion.html | 8 +
.../Integrating-Druid-With-Other-Technologies.html | 8 +
docs/26.0.0/Kafka-Eight.html | 8 +
docs/26.0.0/Libraries.html | 8 +
docs/26.0.0/LimitSpec.html | 8 +
docs/26.0.0/Loading-Your-Data.html | 8 +
docs/26.0.0/Logging.html | 8 +
docs/26.0.0/Master.html | 8 +
docs/26.0.0/Metadata-storage.html | 8 +
docs/26.0.0/Metrics.html | 8 +
docs/26.0.0/Middlemanager.html | 8 +
docs/26.0.0/Modules.html | 8 +
docs/26.0.0/MySQL.html | 8 +
docs/26.0.0/OrderBy.html | 8 +
docs/26.0.0/Other-Hadoop.html | 8 +
docs/26.0.0/Papers-and-talks.html | 8 +
docs/26.0.0/Peons.html | 8 +
docs/26.0.0/Performance-FAQ.html | 8 +
docs/26.0.0/Plumber.html | 8 +
docs/26.0.0/Post-aggregations.html | 8 +
docs/26.0.0/Production-Cluster-Configuration.html | 8 +
docs/26.0.0/Query-Context.html | 8 +
docs/26.0.0/Querying-your-data.html | 8 +
docs/26.0.0/Querying.html | 8 +
docs/26.0.0/Realtime-Config.html | 8 +
docs/26.0.0/Realtime-ingestion.html | 8 +
docs/26.0.0/Realtime.html | 8 +
docs/26.0.0/Recommendations.html | 8 +
docs/26.0.0/Rolling-Updates.html | 8 +
docs/26.0.0/Router.html | 8 +
docs/26.0.0/Rule-Configuration.html | 8 +
docs/26.0.0/SearchQuery.html | 8 +
docs/26.0.0/SearchQuerySpec.html | 8 +
docs/26.0.0/SegmentMetadataQuery.html | 8 +
docs/26.0.0/Segments.html | 8 +
docs/26.0.0/SelectQuery.html | 8 +
docs/26.0.0/Simple-Cluster-Configuration.html | 8 +
docs/26.0.0/Spatial-Filters.html | 8 +
docs/26.0.0/Spatial-Indexing.html | 8 +
docs/26.0.0/Stand-Alone-With-Riak-CS.html | 8 +
docs/26.0.0/Support.html | 8 +
docs/26.0.0/Tasks.html | 8 +
docs/26.0.0/Thanks.html | 8 +
docs/26.0.0/TimeBoundaryQuery.html | 8 +
docs/26.0.0/TimeseriesQuery.html | 8 +
docs/26.0.0/TopNMetricSpec.html | 8 +
docs/26.0.0/TopNQuery.html | 8 +
docs/26.0.0/Tutorial-A-First-Look-at-Druid.html | 8 +
docs/26.0.0/Tutorial-All-About-Queries.html | 8 +
docs/26.0.0/Tutorial-Loading-Batch-Data.html | 8 +
docs/26.0.0/Tutorial-Loading-Streaming-Data.html | 8 +
docs/26.0.0/Tutorial-The-Druid-Cluster.html | 8 +
docs/26.0.0/Tutorial:-A-First-Look-at-Druid.html | 8 +
docs/26.0.0/Tutorial:-All-About-Queries.html | 8 +
docs/26.0.0/Tutorial:-Loading-Batch-Data.html | 8 +
docs/26.0.0/Tutorial:-Loading-Streaming-Data.html | 8 +
.../26.0.0/Tutorial:-Loading-Your-Data-Part-1.html | 8 +
.../26.0.0/Tutorial:-Loading-Your-Data-Part-2.html | 8 +
docs/26.0.0/Tutorial:-The-Druid-Cluster.html | 8 +
docs/26.0.0/Tutorial:-Webstream.html | 8 +
docs/26.0.0/Tutorials.html | 8 +
docs/26.0.0/Twitter-Tutorial.html | 8 +
docs/26.0.0/Versioning.html | 8 +
docs/26.0.0/ZooKeeper.html | 8 +
docs/26.0.0/alerts.html | 8 +
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docs/26.0.0/comparisons/druid-vs-cassandra.html | 8 +
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docs/26.0.0/comparisons/druid-vs-hadoop.html | 8 +
.../comparisons/druid-vs-impala-or-shark.html | 8 +
docs/26.0.0/comparisons/druid-vs-key-value.html | 118 +++++
docs/26.0.0/comparisons/druid-vs-kudu.html | 112 +++++
docs/26.0.0/comparisons/druid-vs-redshift.html | 121 +++++
docs/26.0.0/comparisons/druid-vs-spark.html | 112 +++++
.../26.0.0/comparisons/druid-vs-sql-on-hadoop.html | 143 ++++++
docs/26.0.0/comparisons/druid-vs-vertica.html | 8 +
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docs/26.0.0/configuration/hadoop.html | 8 +
docs/26.0.0/configuration/historical.html | 8 +
.../configuration/human-readable-byte.html | 8 +-
docs/{latest => 26.0.0}/configuration/index.html | 393 ++++++++-------
docs/26.0.0/configuration/indexing-service.html | 8 +
docs/{latest => 26.0.0}/configuration/logging.html | 14 +-
docs/26.0.0/configuration/production-cluster.html | 8 +
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docs/26.0.0/data-management/index.html | 109 +++++
docs/26.0.0/data-management/schema-changes.html | 110 +++++
docs/26.0.0/data-management/update.html | 140 ++++++
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docs/latest/querying/sql-api.html | 6 +-
docs/latest/querying/sql-array-functions.html | 77 +++
docs/latest/querying/sql-data-types.html | 65 ++-
docs/latest/querying/sql-functions.html | 33 +-
docs/latest/querying/sql-jdbc.html | 110 ++++-
docs/latest/querying/sql-json-functions.html | 6 +-
docs/latest/querying/sql-metadata-tables.html | 176 +++----
.../querying/sql-multivalue-string-functions.html | 36 +-
docs/latest/querying/sql-operators.html | 12 +-
docs/latest/querying/sql-query-context.html | 6 +-
docs/latest/querying/sql-scalar.html | 22 +-
docs/latest/querying/sql-translation.html | 16 +-
docs/latest/querying/sql.html | 46 +-
docs/latest/querying/timeboundaryquery.html | 6 +-
docs/latest/querying/timeseriesquery.html | 6 +-
docs/latest/querying/topnmetricspec.html | 6 +-
docs/latest/querying/topnquery.html | 6 +-
docs/latest/querying/troubleshooting.html | 6 +-
docs/latest/querying/using-caching.html | 6 +-
docs/latest/querying/virtual-columns.html | 6 +-
docs/latest/tutorials/cluster.html | 22 +-
docs/latest/tutorials/docker.html | 14 +-
docs/latest/tutorials/index.html | 59 +--
docs/latest/tutorials/tutorial-batch-hadoop.html | 10 +-
docs/latest/tutorials/tutorial-batch-native.html | 4 +-
docs/latest/tutorials/tutorial-batch.html | 8 +-
docs/latest/tutorials/tutorial-compaction.html | 6 +-
docs/latest/tutorials/tutorial-delete-data.html | 6 +-
docs/latest/tutorials/tutorial-ingestion-spec.html | 8 +-
docs/latest/tutorials/tutorial-jdbc.html | 104 ++++
docs/latest/tutorials/tutorial-jupyter-index.html | 63 ++-
docs/latest/tutorials/tutorial-kafka.html | 10 +-
.../latest/tutorials/tutorial-kerberos-hadoop.html | 6 +-
.../tutorials/tutorial-msq-convert-spec.html | 8 +-
docs/latest/tutorials/tutorial-msq-extern.html | 6 +-
docs/latest/tutorials/tutorial-query.html | 130 ++---
docs/latest/tutorials/tutorial-retention.html | 6 +-
docs/latest/tutorials/tutorial-rollup.html | 8 +-
docs/latest/tutorials/tutorial-sketches-theta.html | 6 +-
docs/latest/tutorials/tutorial-sql-query-view.html | 203 ++++++++
docs/latest/tutorials/tutorial-transform-spec.html | 6 +-
docs/latest/tutorials/tutorial-unnest-arrays.html | 543 +++++++++++++++++++++
docs/latest/tutorials/tutorial-update-data.html | 92 ++--
index.html | 84 ----
796 files changed, 32037 insertions(+), 3488 deletions(-)
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diff --git a/docs/26.0.0/MySQL.html b/docs/26.0.0/MySQL.html
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diff --git a/docs/26.0.0/Other-Hadoop.html b/docs/26.0.0/Other-Hadoop.html
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diff --git a/docs/26.0.0/Performance-FAQ.html b/docs/26.0.0/Performance-FAQ.html
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+<title>Redirecting...</title>
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+<meta http-equiv="refresh" content="0; url=/community/">
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diff --git a/docs/26.0.0/Tasks.html b/docs/26.0.0/Tasks.html
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+<meta charset="utf-8">
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diff --git a/docs/26.0.0/Tutorial-A-First-Look-at-Druid.html b/docs/26.0.0/Tutorial-A-First-Look-at-Druid.html
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+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/comparisons/druid-vs-elasticsearch.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Apache Druid vs Elasticsearch</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>We are not experts on search systems, if anything is incorrect about our portrayal, please let us know on the mailing list or via some other means.</p>
+<p>Elasticsearch is a search system based on Apache Lucene. It provides full text search for schema-free documents
+and provides access to raw event level data. Elasticsearch is increasingly adding more support for analytics and aggregations.
+<a href="https://groups.google.com/forum/#!msg/druid-development/nlpwTHNclj8/sOuWlKOzPpYJ">Some members of the community</a> have pointed out
+the resource requirements for data ingestion and aggregation in Elasticsearch is much higher than those of Druid.</p>
+<p>Elasticsearch also does not support data summarization/roll-up at ingestion time, which can compact the data that needs to be
+stored up to 100x with real-world data sets. This leads to Elasticsearch having greater storage requirements.</p>
+<p>Druid focuses on OLAP work flows. Druid is optimized for high performance (fast aggregation and ingestion) at low cost,
+and supports a wide range of analytic operations. Druid has some basic search support for structured event data, but does not support
+full text search. Druid also does not support completely unstructured data. Measures must be defined in a Druid schema such that
+summarization/roll-up can be done.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/misc/papers-and-talks.html"><span class="arrow-prev">← </span><span>Papers</span></a><a class="docs-next button" href="/docs/26.0.0/comparisons/druid-vs-key-value.html"><span class="function-name-prevnext">Apache Druid vs. Key/Value Stores (HBase/Cassandra/OpenTSDB)</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
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+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="druid-vs-sql-on-hadoop.html">
+<meta http-equiv="refresh" content="0; url=druid-vs-sql-on-hadoop.html">
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+<a href="druid-vs-sql-on-hadoop.html">Click here if you are not redirected.</a>
+<script>location="druid-vs-sql-on-hadoop.html"</script>
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+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
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diff --git a/docs/26.0.0/comparisons/druid-vs-key-value.html b/docs/26.0.0/comparisons/druid-vs-key-value.html
new file mode 100644
index 00000000..334e516f
--- /dev/null
+++ b/docs/26.0.0/comparisons/druid-vs-key-value.html
@@ -0,0 +1,118 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Apache Druid vs. Key/Value Stores (HBase/Cassandra/OpenTSDB) · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/comparisons/druid-vs-key-value.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:lan [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/comparisons/druid-vs-key-value.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Apache Druid vs. Key/Value Stores (HBase/Cassandra/OpenTSDB)</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>Druid is highly optimized for scans and aggregations, it supports arbitrarily deep drill downs into data sets. This same functionality
+is supported in key/value stores in 2 ways:</p>
+<ol>
+<li>Pre-compute all permutations of possible user queries</li>
+<li>Range scans on event data</li>
+</ol>
+<p>When pre-computing results, the key is the exact parameters of the query, and the value is the result of the query.
+The queries return extremely quickly, but at the cost of flexibility, as ad-hoc exploratory queries are not possible with
+pre-computing every possible query permutation. Pre-computing all permutations of all ad-hoc queries leads to result sets
+that grow exponentially with the number of columns of a data set, and pre-computing queries for complex real-world data sets
+can require hours of pre-processing time.</p>
+<p>The other approach to using key/value stores for aggregations to use the dimensions of an event as the key and the event measures as the value.
+Aggregations are done by issuing range scans on this data. Timeseries specific databases such as OpenTSDB use this approach.
+One of the limitations here is that the key/value storage model does not have indexes for any kind of filtering other than prefix ranges,
+which can be used to filter a query down to a metric and time range, but cannot resolve complex predicates to narrow the exact data to scan.
+When the number of rows to scan gets large, this limitation can greatly reduce performance. It is also harder to achieve good
+locality with key/value stores because most don’t support pushing down aggregates to the storage layer.</p>
+<p>For arbitrary exploration of data (flexible data filtering), Druid's custom column format enables ad-hoc queries without pre-computation. The format
+also enables fast scans on columns, which is important for good aggregation performance.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/comparisons/druid-vs-elasticsearch.html"><span class="arrow-prev">← </span><span>Apache Druid vs Elasticsearch</span></a><a class="docs-next button" href="/docs/26.0.0/comparisons/druid-vs-kudu.html"><span>Apache Druid vs Kudu</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="c [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
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diff --git a/docs/26.0.0/comparisons/druid-vs-kudu.html b/docs/26.0.0/comparisons/druid-vs-kudu.html
new file mode 100644
index 00000000..56d7b072
--- /dev/null
+++ b/docs/26.0.0/comparisons/druid-vs-kudu.html
@@ -0,0 +1,112 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Apache Druid vs Kudu · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/comparisons/druid-vs-kudu.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:ve [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/comparisons/druid-vs-kudu.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Apache Druid vs Kudu</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>Kudu's storage format enables single row updates, whereas updates to existing Druid segments requires recreating the segment, so theoretically
+the process for updating old values should be higher latency in Druid. However, the requirements in Kudu for maintaining extra head space to store
+updates as well as organizing data by id instead of time has the potential to introduce some extra latency and accessing
+of data that is not needed to answer a query at query time.</p>
+<p>Druid summarizes/rollups up data at ingestion time, which in practice reduces the raw data that needs to be
+stored significantly (up to 40 times on average), and increases performance of scanning raw data significantly.
+Druid segments also contain bitmap indexes for fast filtering, which Kudu does not currently support.
+Druid's segment architecture is heavily geared towards fast aggregates and filters, and for OLAP workflows. Appends are very
+fast in Druid, whereas updates of older data are higher latency. This is by design as the data Druid is good for is typically event data,
+and does not need to be updated too frequently. Kudu supports arbitrary primary keys with uniqueness constraints, and
+efficient lookup by ranges of those keys. Kudu chooses not to include the execution engine, but supports sufficient
+operations so as to allow node-local processing from the execution engines. This means that Kudu can support multiple frameworks on the same data (e.g., MR, Spark, and SQL).
+Druid includes its own query layer that allows it to push down aggregations and computations directly to data processes for faster query processing.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/comparisons/druid-vs-key-value.html"><span class="arrow-prev">← </span><span class="function-name-prevnext">Apache Druid vs. Key/Value Stores (HBase/Cassandra/OpenTSDB)</span></a><a class="docs-next button" href="/docs/26.0.0/comparisons/druid-vs-redshift.html"><span>Apache Druid vs Redshift</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
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diff --git a/docs/26.0.0/comparisons/druid-vs-redshift.html b/docs/26.0.0/comparisons/druid-vs-redshift.html
new file mode 100644
index 00000000..945112c1
--- /dev/null
+++ b/docs/26.0.0/comparisons/druid-vs-redshift.html
@@ -0,0 +1,121 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Apache Druid vs Redshift · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/comparisons/druid-vs-redshift.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docs [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/comparisons/druid-vs-redshift.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Apache Druid vs Redshift</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<h3><a class="anchor" aria-hidden="true" id="how-does-druid-compare-to-redshift"></a><a href="#how-does-druid-compare-to-redshift" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5 [...]
+<p>In terms of drawing a differentiation, Redshift started out as ParAccel (Actian), which Amazon is licensing and has since heavily modified.</p>
+<p>Aside from potential performance differences, there are some functional differences:</p>
+<h3><a class="anchor" aria-hidden="true" id="real-time-data-ingestion"></a><a href="#real-time-data-ingestion" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-. [...]
+<p>Because Druid is optimized to provide insight against massive quantities of streaming data; it is able to load and aggregate data in real-time.</p>
+<p>Generally traditional data warehouses including column stores work only with batch ingestion and are not optimal for streaming data in regularly.</p>
+<h3><a class="anchor" aria-hidden="true" id="druid-is-a-read-oriented-analytical-data-store"></a><a href="#druid-is-a-read-oriented-analytical-data-store" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3 [...]
+<p>Druid’s write semantics are not as fluid and does not support full joins (we support large table to small table joins). Redshift provides full SQL support including joins and insert/update statements.</p>
+<h3><a class="anchor" aria-hidden="true" id="data-distribution-model"></a><a href="#data-distribution-model" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 [...]
+<p>Druid’s data distribution is segment-based and leverages a highly available "deep" storage such as S3 or HDFS. Scaling up (or down) does not require massive copy actions or downtime; in fact, losing any number of Historical processes does not result in data loss because new Historical processes can always be brought up by reading data from "deep" storage.</p>
+<p>To contrast, ParAccel’s data distribution model is hash-based. Expanding the cluster requires re-hashing the data across the nodes, making it difficult to perform without taking downtime. Amazon’s Redshift works around this issue with a multi-step process:</p>
+<ul>
+<li>set cluster into read-only mode</li>
+<li>copy data from cluster to new cluster that exists in parallel</li>
+<li>redirect traffic to new cluster</li>
+</ul>
+<h3><a class="anchor" aria-hidden="true" id="replication-strategy"></a><a href="#replication-strategy" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1 [...]
+<p>Druid employs segment-level data distribution meaning that more processes can be added and rebalanced without having to perform a staged swap. The replication strategy also makes all replicas available for querying. Replication is done automatically and without any impact to performance.</p>
+<p>ParAccel’s hash-based distribution generally means that replication is conducted via hot spares. This puts a numerical limit on the number of nodes you can lose without losing data, and this replication strategy often does not allow the hot spare to help share query load.</p>
+<h3><a class="anchor" aria-hidden="true" id="indexing-strategy"></a><a href="#indexing-strategy" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2- [...]
+<p>Along with column oriented structures, Druid uses indexing structures to speed up query execution when a filter is provided. Indexing structures do increase storage overhead (and make it more difficult to allow for mutation), but they also significantly speed up queries.</p>
+<p>ParAccel does not appear to employ indexing strategies.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/comparisons/druid-vs-kudu.html"><span class="arrow-prev">← </span><span>Apache Druid vs Kudu</span></a><a class="docs-next button" href="/docs/26.0.0/comparisons/druid-vs-spark.html"><span>Apache Druid vs Spark</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div c [...]
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+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Apache Druid vs Spark · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/comparisons/druid-vs-spark.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch: [...]
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+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
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+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/comparisons/druid-vs-spark.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Apache Druid vs Spark</h1></header><article><div><span><!--
+ ~ 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
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+ ~
+ ~ 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
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+ -->
+<p>Druid and Spark are complementary solutions as Druid can be used to accelerate OLAP queries in Spark.</p>
+<p>Spark is a general cluster computing framework initially designed around the concept of Resilient Distributed Datasets (RDDs).
+RDDs enable data reuse by persisting intermediate results
+in memory and enable Spark to provide fast computations for iterative algorithms.
+This is especially beneficial for certain work flows such as machine
+learning, where the same operation may be applied over and over
+again until some result is converged upon. The generality of Spark makes it very suitable as an engine to process (clean or transform) data.
+Although Spark provides the ability to query data through Spark SQL, much like Hadoop, the query latencies are not specifically targeted to be interactive (sub-second).</p>
+<p>Druid's focus is on extremely low latency queries, and is ideal for powering applications used by thousands of users, and where each query must
+return fast enough such that users can interactively explore through data. Druid fully indexes all data, and can act as a middle layer between Spark and your application.
+One typical setup seen in production is to process data in Spark, and load the processed data into Druid for faster access.</p>
+<p>For more information about using Druid and Spark together, including benchmarks of the two systems, please see:</p>
+<p><a href="https://www.linkedin.com/pulse/combining-druid-spark-interactive-flexible-analytics-scale-butani">https://www.linkedin.com/pulse/combining-druid-spark-interactive-flexible-analytics-scale-butani</a></p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/comparisons/druid-vs-redshift.html"><span class="arrow-prev">← </span><span>Apache Druid vs Redshift</span></a><a class="docs-next button" href="/docs/26.0.0/comparisons/druid-vs-sql-on-hadoop.html"><span>Apache Druid vs SQL-on-Hadoop</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div [...]
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diff --git a/docs/26.0.0/comparisons/druid-vs-sql-on-hadoop.html b/docs/26.0.0/comparisons/druid-vs-sql-on-hadoop.html
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--- /dev/null
+++ b/docs/26.0.0/comparisons/druid-vs-sql-on-hadoop.html
@@ -0,0 +1,143 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Apache Druid vs SQL-on-Hadoop · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/comparisons/druid-vs-sql-on-hadoop.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta [...]
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+ ~ 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
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+ ~
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+ ~
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+ ~ 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.
+ -->
+<p>SQL-on-Hadoop engines provide an
+execution engine for various data formats and data stores, and
+many can be made to push down computations down to Druid, while providing a SQL interface to Druid.</p>
+<p>For a direct comparison between the technologies and when to only use one or the other, things basically comes down to your
+product requirements and what the systems were designed to do.</p>
+<p>Druid was designed to</p>
+<ol>
+<li>be an always on service</li>
+<li>ingest data in real-time</li>
+<li>handle slice-n-dice style ad-hoc queries</li>
+</ol>
+<p>SQL-on-Hadoop engines generally sidestep Map/Reduce, instead querying data directly from HDFS or, in some cases, other storage systems.
+Some of these engines (including Impala and Presto) can be co-located with HDFS data nodes and coordinate with them to achieve data locality for queries.
+What does this mean? We can talk about it in terms of three general areas</p>
+<ol>
+<li>Queries</li>
+<li>Data Ingestion</li>
+<li>Query Flexibility</li>
+</ol>
+<h3><a class="anchor" aria-hidden="true" id="queries"></a><a href="#queries" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1- [...]
+<p>Druid segments stores data in a custom column format. Segments are scanned directly as part of queries and each Druid server
+calculates a set of results that are eventually merged at the Broker level. This means the data that is transferred between servers
+are queries and results, and all computation is done internally as part of the Druid servers.</p>
+<p>Most SQL-on-Hadoop engines are responsible for query planning and execution for underlying storage layers and storage formats.
+They are processes that stay on even if there is no query running (eliminating the JVM startup costs from Hadoop MapReduce).
+Some (Impala/Presto) SQL-on-Hadoop engines have daemon processes that can be run where the data is stored, virtually eliminating network transfer costs. There is still
+some latency overhead (e.g. serialization/deserialization time) associated with pulling data from the underlying storage layer into the computation layer. We are unaware of exactly
+how much of a performance impact this makes.</p>
+<h3><a class="anchor" aria-hidden="true" id="data-ingestion"></a><a href="#data-ingestion" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
+<p>Druid is built to allow for real-time ingestion of data. You can ingest data and query it immediately upon ingestion,
+the latency between how quickly the event is reflected in the data is dominated by how long it takes to deliver the event to Druid.</p>
+<p>SQL-on-Hadoop, being based on data in HDFS or some other backing store, are limited in their data ingestion rates by the
+rate at which that backing store can make data available. Generally, the backing store is the biggest bottleneck for
+how quickly data can become available.</p>
+<h3><a class="anchor" aria-hidden="true" id="query-flexibility"></a><a href="#query-flexibility" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2- [...]
+<p>Druid's query language is fairly low level and maps to how Druid operates internally. Although Druid can be combined with a high level query
+planner to support most SQL queries and analytic SQL queries (minus joins among large tables),
+base Druid is less flexible than SQL-on-Hadoop solutions for generic processing.</p>
+<p>SQL-on-Hadoop support SQL style queries with full joins.</p>
+<h2><a class="anchor" aria-hidden="true" id="druid-vs-parquet"></a><a href="#druid-vs-parquet" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2. [...]
+<p>Parquet is a column storage format that is designed to work with SQL-on-Hadoop engines. Parquet doesn't have a query execution engine, and instead
+relies on external sources to pull data out of it.</p>
+<p>Druid's storage format is highly optimized for linear scans. Although Druid has support for nested data, Parquet's storage format is much
+more hierarchical, and is more designed for binary chunking. In theory, this should lead to faster scans in Druid.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/comparisons/druid-vs-spark.html"><span class="arrow-prev">← </span><span>Apache Druid vs Spark</span></a><a class="docs-next button" href="/docs/26.0.0/design/auth.html"><span>Authentication and Authorization</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#druid-vs-parquet">Druid vs Parquet</a></li></ul></nav></ [...]
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+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/comparisons/druid-vs-vertica.html b/docs/26.0.0/comparisons/druid-vs-vertica.html
new file mode 100644
index 00000000..a1d74ac6
--- /dev/null
+++ b/docs/26.0.0/comparisons/druid-vs-vertica.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="druid-vs-redshift.html">
+<meta http-equiv="refresh" content="0; url=druid-vs-redshift.html">
+<h1>Redirecting...</h1>
+<a href="druid-vs-redshift.html">Click here if you are not redirected.</a>
+<script>location="druid-vs-redshift.html"</script>
diff --git a/docs/26.0.0/configuration/auth.html b/docs/26.0.0/configuration/auth.html
new file mode 100644
index 00000000..ea2aebee
--- /dev/null
+++ b/docs/26.0.0/configuration/auth.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../design/auth.html">
+<meta http-equiv="refresh" content="0; url=../design/auth.html">
+<h1>Redirecting...</h1>
+<a href="../design/auth.html">Click here if you are not redirected.</a>
+<script>location="../design/auth.html"</script>
diff --git a/docs/26.0.0/configuration/broker.html b/docs/26.0.0/configuration/broker.html
new file mode 100644
index 00000000..72363c4a
--- /dev/null
+++ b/docs/26.0.0/configuration/broker.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../configuration/index.html#broker">
+<meta http-equiv="refresh" content="0; url=../configuration/index.html#broker">
+<h1>Redirecting...</h1>
+<a href="../configuration/index.html#broker">Click here if you are not redirected.</a>
+<script>location="../configuration/index.html#broker"</script>
diff --git a/docs/26.0.0/configuration/caching.html b/docs/26.0.0/configuration/caching.html
new file mode 100644
index 00000000..dcb5dd6c
--- /dev/null
+++ b/docs/26.0.0/configuration/caching.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../configuration/index.html#cache-configuration">
+<meta http-equiv="refresh" content="0; url=../configuration/index.html#cache-configuration">
+<h1>Redirecting...</h1>
+<a href="../configuration/index.html#cache-configuration">Click here if you are not redirected.</a>
+<script>location="../configuration/index.html#cache-configuration"</script>
diff --git a/docs/26.0.0/configuration/coordinator.html b/docs/26.0.0/configuration/coordinator.html
new file mode 100644
index 00000000..e32a17a0
--- /dev/null
+++ b/docs/26.0.0/configuration/coordinator.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../configuration/index.html#coordinator">
+<meta http-equiv="refresh" content="0; url=../configuration/index.html#coordinator">
+<h1>Redirecting...</h1>
+<a href="../configuration/index.html#coordinator">Click here if you are not redirected.</a>
+<script>location="../configuration/index.html#coordinator"</script>
diff --git a/docs/26.0.0/configuration/hadoop.html b/docs/26.0.0/configuration/hadoop.html
new file mode 100644
index 00000000..a14b2fb4
--- /dev/null
+++ b/docs/26.0.0/configuration/hadoop.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../ingestion/hadoop.html">
+<meta http-equiv="refresh" content="0; url=../ingestion/hadoop.html">
+<h1>Redirecting...</h1>
+<a href="../ingestion/hadoop.html">Click here if you are not redirected.</a>
+<script>location="../ingestion/hadoop.html"</script>
diff --git a/docs/26.0.0/configuration/historical.html b/docs/26.0.0/configuration/historical.html
new file mode 100644
index 00000000..1112bc05
--- /dev/null
+++ b/docs/26.0.0/configuration/historical.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../configuration/index.html#historical">
+<meta http-equiv="refresh" content="0; url=../configuration/index.html#historical">
+<h1>Redirecting...</h1>
+<a href="../configuration/index.html#historical">Click here if you are not redirected.</a>
+<script>location="../configuration/index.html#historical"</script>
diff --git a/docs/latest/configuration/human-readable-byte.html b/docs/26.0.0/configuration/human-readable-byte.html
similarity index 97%
copy from docs/latest/configuration/human-readable-byte.html
copy to docs/26.0.0/configuration/human-readable-byte.html
index 007d2da1..143e7512 100644
--- a/docs/latest/configuration/human-readable-byte.html
+++ b/docs/26.0.0/configuration/human-readable-byte.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Human-readable Byte Configuration Reference · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/configuration/human-readable-byte.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Human-readable Byte Configuration Reference · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/configuration/human-readable-byte.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content [...]
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'UA-131010415-1');
- </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></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
@@ -75,7 +75,7 @@ Also, only integers are valid as the number part. For example, you can't replace
<pre><code class="hljs css language-properties"><span class="hljs-comment"># 256Mi = 256MiB = 256 * 1024 * 1024 bytes</span>
<span class="hljs-meta">druid.cache.sizeInBytes</span>=<span class="hljs-string">256Mi</span>
</code></pre>
-</span></div></article></div><div class="docs-prevnext"></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#a-number-in-bytes">A number in bytes</a></li><li><a href="#a-number-with-a-unit-suffix">A number with a unit suffix</a><ul class="toc-headings"><li><a href="#supported-units">Supported Units</a></li></ul></li></ul></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p><a href="/technology">Techn [...]
+</span></div></article></div><div class="docs-prevnext"></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#a-number-in-bytes">A number in bytes</a></li><li><a href="#a-number-with-a-unit-suffix">A number with a unit suffix</a><ul class="toc-headings"><li><a href="#supported-units">Supported Units</a></li></ul></li></ul></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p><a href="/technology">Techn [...]
document.addEventListener('keyup', function(e) {
if (e.target !== document.body) {
return;
@@ -92,6 +92,6 @@ Also, only integers are valid as the number part. For example, you can't replace
apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
indexName: 'apache_druid',
inputSelector: '#search_input_react',
- algoliaOptions: {"facetFilters":["language:en","version:25.0.0"]}
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
});
</script></body></html>
\ No newline at end of file
diff --git a/docs/latest/configuration/index.html b/docs/26.0.0/configuration/index.html
similarity index 87%
copy from docs/latest/configuration/index.html
copy to docs/26.0.0/configuration/index.html
index b1d4f242..9e222179 100644
--- a/docs/latest/configuration/index.html
+++ b/docs/26.0.0/configuration/index.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Configuration reference · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/configuration/index.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:versi [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Configuration reference · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/configuration/index.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:versi [...]
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'UA-131010415-1');
- </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
var coll = document.getElementsByClassName('collapsible');
var checkActiveCategory = true;
for (var i = 0; i < coll.length; i++) {
@@ -128,7 +128,7 @@ druid.segmentCache.locations=<span class="hljs-variable">${</span><span class="h
<h3><a class="anchor" aria-hidden="true" id="jvm-configuration-best-practices"></a><a href="#jvm-configuration-best-practices" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13. [...]
<p>There are four JVM parameters that we set on all of our processes:</p>
<ul>
-<li><p><code>-Duser.timezone=UTC</code>: This sets the default timezone of the JVM to UTC. We always set this and do not test with other default timezones, so local timezones might work, but they also might uncover weird and interesting bugs. To issue queries in a non-UTC timezone, see <a href="/docs/latest/querying/granularities.html#period-granularities">query granularities</a></p></li>
+<li><p><code>-Duser.timezone=UTC</code>: This sets the default timezone of the JVM to UTC. We always set this and do not test with other default timezones, so local timezones might work, but they also might uncover weird and interesting bugs. To issue queries in a non-UTC timezone, see <a href="/docs/26.0.0/querying/granularities.html#period-granularities">query granularities</a></p></li>
<li><p><code>-Dfile.encoding=UTF-8</code> This is similar to timezone, we test assuming UTF-8. Local encodings might work, but they also might result in weird and interesting bugs.</p></li>
<li><p><code>-Djava.io.tmpdir=<a path></code> Various parts of Druid use temporary files to interact with the file system. These files can become quite large. This means that systems that have small <code>/tmp</code> directories can cause problems for Druid. Therefore, set the JVM tmp directory to a location with ample space.</p>
<p>Also consider the following when configuring the JVM tmp directory:</p>
@@ -175,7 +175,7 @@ druid.segmentCache.locations=<span class="hljs-variable">${</span><span class="h
<tr><td><code>druid.zk.paths.base</code></td><td>Base ZooKeeper path.</td><td><code>/druid</code></td></tr>
<tr><td><code>druid.zk.service.host</code></td><td>The ZooKeeper hosts to connect to. This is a REQUIRED property and therefore a host address must be supplied.</td><td>none</td></tr>
<tr><td><code>druid.zk.service.user</code></td><td>The username to authenticate with ZooKeeper. This is an optional property.</td><td>none</td></tr>
-<tr><td><code>druid.zk.service.pwd</code></td><td>The <a href="/docs/latest/operations/password-provider.html">Password Provider</a> or the string password to authenticate with ZooKeeper. This is an optional property.</td><td>none</td></tr>
+<tr><td><code>druid.zk.service.pwd</code></td><td>The <a href="/docs/26.0.0/operations/password-provider.html">Password Provider</a> or the string password to authenticate with ZooKeeper. This is an optional property.</td><td>none</td></tr>
<tr><td><code>druid.zk.service.authScheme</code></td><td>digest is the only authentication scheme supported.</td><td>digest</td></tr>
</tbody>
</table>
@@ -257,7 +257,7 @@ values for the following properties, among others provided by the Java implement
<tr><td><code>druid.server.https.keyStorePath</code></td><td>The file path or URL of the TLS/SSL Key store.</td><td>none</td><td>yes</td></tr>
<tr><td><code>druid.server.https.keyStoreType</code></td><td>The type of the key store.</td><td>none</td><td>yes</td></tr>
<tr><td><code>druid.server.https.certAlias</code></td><td>Alias of TLS/SSL certificate for the connector.</td><td>none</td><td>yes</td></tr>
-<tr><td><code>druid.server.https.keyStorePassword</code></td><td>The <a href="/docs/latest/operations/password-provider.html">Password Provider</a> or String password for the Key Store.</td><td>none</td><td>yes</td></tr>
+<tr><td><code>druid.server.https.keyStorePassword</code></td><td>The <a href="/docs/26.0.0/operations/password-provider.html">Password Provider</a> or String password for the Key Store.</td><td>none</td><td>yes</td></tr>
</tbody>
</table>
<p>Following table contains non-mandatory advanced configuration options, use caution.</p>
@@ -267,7 +267,7 @@ values for the following properties, among others provided by the Java implement
</thead>
<tbody>
<tr><td><code>druid.server.https.keyManagerFactoryAlgorithm</code></td><td>Algorithm to use for creating KeyManager, more details <a href="https://docs.oracle.com/javase/7/docs/technotes/guides/security/jsse/JSSERefGuide.html#KeyManager">here</a>.</td><td><code>javax.net.ssl.KeyManagerFactory.getDefaultAlgorithm()</code></td><td>no</td></tr>
-<tr><td><code>druid.server.https.keyManagerPassword</code></td><td>The <a href="/docs/latest/operations/password-provider.html">Password Provider</a> or String password for the Key Manager.</td><td>none</td><td>no</td></tr>
+<tr><td><code>druid.server.https.keyManagerPassword</code></td><td>The <a href="/docs/26.0.0/operations/password-provider.html">Password Provider</a> or String password for the Key Manager.</td><td>none</td><td>no</td></tr>
<tr><td><code>druid.server.https.includeCipherSuites</code></td><td>List of cipher suite names to include. You can either use the exact cipher suite name or a regular expression.</td><td>Jetty's default include cipher list</td><td>no</td></tr>
<tr><td><code>druid.server.https.excludeCipherSuites</code></td><td>List of cipher suite names to exclude. You can either use the exact cipher suite name or a regular expression.</td><td>Jetty's default exclude cipher list</td><td>no</td></tr>
<tr><td><code>druid.server.https.includeProtocols</code></td><td>List of exact protocols names to include.</td><td>Jetty's default include protocol list</td><td>no</td></tr>
@@ -285,7 +285,7 @@ values for the following properties, among others provided by the Java implement
<tr><td><code>druid.client.https.trustStoreType</code></td><td>The type of the key store where trusted root certificates are stored.</td><td><code>java.security.KeyStore.getDefaultType()</code></td><td>no</td></tr>
<tr><td><code>druid.client.https.trustStorePath</code></td><td>The file path or URL of the TLS/SSL Key store where trusted root certificates are stored.</td><td>none</td><td>yes</td></tr>
<tr><td><code>druid.client.https.trustStoreAlgorithm</code></td><td>Algorithm to be used by TrustManager to validate certificate chains</td><td><code>javax.net.ssl.TrustManagerFactory.getDefaultAlgorithm()</code></td><td>no</td></tr>
-<tr><td><code>druid.client.https.trustStorePassword</code></td><td>The <a href="/docs/latest/operations/password-provider.html">Password Provider</a> or String password for the Trust Store.</td><td>none</td><td>yes</td></tr>
+<tr><td><code>druid.client.https.trustStorePassword</code></td><td>The <a href="/docs/26.0.0/operations/password-provider.html">Password Provider</a> or String password for the Trust Store.</td><td>none</td><td>yes</td></tr>
</tbody>
</table>
<p>This <a href="http://docs.oracle.com/javase/8/docs/technotes/guides/security/StandardNames.html">document</a> lists all the possible
@@ -303,7 +303,7 @@ values for the above mentioned configs among others provided by Java implementat
<tr><td><code>druid.auth.allowUnauthenticatedHttpOptions</code></td><td>Boolean</td><td>If true, skip authentication checks for HTTP OPTIONS requests. This is needed for certain use cases, such as supporting CORS pre-flight requests. Note that disabling authentication checks for OPTIONS requests will allow unauthenticated users to determine what Druid endpoints are valid (by checking if the OPTIONS request returns a 200 instead of 404), so enabling this option may reveal information abou [...]
</tbody>
</table>
-<p>For more information, please see <a href="/docs/latest/design/auth.html">Authentication and Authorization</a>.</p>
+<p>For more information, please see <a href="/docs/26.0.0/design/auth.html">Authentication and Authorization</a>.</p>
<p>For configuration options for specific auth extensions, please refer to the extension documentation.</p>
<h3><a class="anchor" aria-hidden="true" id="startup-logging"></a><a href="#startup-logging" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 [...]
<p>All processes can log debugging information on startup.</p>
@@ -319,7 +319,7 @@ values for the above mentioned configs among others provided by Java implementat
<p>Note that some sensitive information may be logged if these settings are enabled.</p>
<h3><a class="anchor" aria-hidden="true" id="request-logging"></a><a href="#request-logging" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 [...]
<p>All processes that can serve queries can also log the query requests they see. Broker processes can additionally log the SQL requests (both from HTTP and JDBC) they see.
-For an example of setting up request logging, see <a href="/docs/latest/operations/request-logging.html">Request logging</a>.</p>
+For an example of setting up request logging, see <a href="/docs/26.0.0/operations/request-logging.html">Request logging</a>.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
@@ -328,7 +328,7 @@ For an example of setting up request logging, see <a href="/docs/latest/operatio
<tr><td><code>druid.request.logging.type</code></td><td>How to log every query request. Choices: <code>noop</code>, <a href="#file-request-logging"><code>file</code></a>, <a href="#emitter-request-logging"><code>emitter</code></a>, <a href="#slf4j-request-logging"><code>slf4j</code></a>, <a href="#filtered-request-logging"><code>filtered</code></a>, <a href="#composing-request-logging"><code>composing</code></a>, <a href="#switching-request-logging"><code>switching</code></a></td><td><co [...]
</tbody>
</table>
-<p>Note that you can enable sending all the HTTP requests to log by setting <code>org.apache.druid.jetty.RequestLog</code> to the <code>DEBUG</code> level. See <a href="/docs/latest/configuration/logging.html">Logging</a> for more information.</p>
+<p>Note that you can enable sending all the HTTP requests to log by setting <code>org.apache.druid.jetty.RequestLog</code> to the <code>DEBUG</code> level. See <a href="/docs/26.0.0/configuration/logging.html">Logging</a> for more information.</p>
<h4><a class="anchor" aria-hidden="true" id="file-request-logging"></a><a href="#file-request-logging" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1 [...]
<p>The <code>file</code> request logger stores daily request logs on disk.</p>
<table>
@@ -390,7 +390,7 @@ For an example of setting up request logging, see <a href="/docs/latest/operatio
<p>The <code>filtered</code> request logger filters requests based on the query type or how long a query takes to complete.
For native queries, the logger only logs requests when the <code>query/time</code> metric exceeds the threshold provided in <code>queryTimeThresholdMs</code>.
For SQL queries, it only logs requests when the <code>sqlQuery/time</code> metric exceeds threshold provided in <code>sqlQueryTimeThresholdMs</code>.
-See <a href="/docs/latest/operations/metrics.html">Metrics</a> for more details on query metrics.</p>
+See <a href="/docs/26.0.0/operations/metrics.html">Metrics</a> for more details on query metrics.</p>
<p>Requests that meet the threshold are logged using the request logger type set in <code>druid.request.logging.delegate.type</code>.</p>
<table>
<thead>
@@ -433,12 +433,12 @@ See <a href="/docs/latest/operations/metrics.html">Metrics</a> for more details
<tbody>
<tr><td><code>druid.audit.manager.auditHistoryMillis</code></td><td>Default duration for querying audit history.</td><td>1 week</td></tr>
<tr><td><code>druid.audit.manager.includePayloadAsDimensionInMetric</code></td><td>Boolean flag on whether to add <code>payload</code> column in service metric.</td><td>false</td></tr>
-<tr><td><code>druid.audit.manager.maxPayloadSizeBytes</code></td><td>The maximum size of audit payload to store in Druid's metadata store audit table. If the size of audit payload exceeds this value, the audit log would be stored with a message indicating that the payload was omitted instead. Setting <code>maxPayloadSizeBytes</code> to -1 (default value) disables this check, meaning Druid will always store audit payload regardless of it's size. Setting to any negative number other than < [...]
+<tr><td><code>druid.audit.manager.maxPayloadSizeBytes</code></td><td>The maximum size of audit payload to store in Druid's metadata store audit table. If the size of audit payload exceeds this value, the audit log would be stored with a message indicating that the payload was omitted instead. Setting <code>maxPayloadSizeBytes</code> to -1 (default value) disables this check, meaning Druid will always store audit payload regardless of it's size. Setting to any negative number other than < [...]
<tr><td><code>druid.audit.manager.skipNullField</code></td><td>If true, the audit payload stored in metadata store will exclude any field with null value.</td><td>false</td></tr>
</tbody>
</table>
<h3><a class="anchor" aria-hidden="true" id="enabling-metrics"></a><a href="#enabling-metrics" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2. [...]
-<p>You can configure Druid processes to emit <a href="/docs/latest/operations/metrics.html">metrics</a> regularly from a number of <a href="#metrics-monitors">monitors</a> via <a href="#metrics-emitters">emitters</a>.</p>
+<p>You can configure Druid processes to emit <a href="/docs/26.0.0/operations/metrics.html">metrics</a> regularly from a number of <a href="#metrics-monitors">monitors</a> via <a href="#metrics-emitters">emitters</a>.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
@@ -488,6 +488,7 @@ See <a href="/docs/latest/operations/metrics.html">Metrics</a> for more details
<li><a href="#parametrized-http-emitter-module"><code>parametrized</code></a> operates like the <code>http</code> emitter but fine-tunes the recipient URL based on the event feed.</li>
<li><a href="#composing-emitter-module"><code>composing</code></a> initializes multiple emitter modules.</li>
<li><a href="#graphite-emitter"><code>graphite</code></a> emits metrics to a <a href="https://graphiteapp.org/">Graphite</a> Carbon service.</li>
+<li><a href="#switching-emitter"><code>switching</code></a> initializes and emits to multiple emitter modules based on the event feed.</li>
</ul>
<h5><a class="anchor" aria-hidden="true" id="logging-emitter-module"></a><a href="#logging-emitter-module" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0 [...]
<table>
@@ -507,7 +508,7 @@ See <a href="/docs/latest/operations/metrics.html">Metrics</a> for more details
<tbody>
<tr><td><code>druid.emitter.http.flushMillis</code></td><td>How often the internal message buffer is flushed (data is sent).</td><td>60000</td></tr>
<tr><td><code>druid.emitter.http.flushCount</code></td><td>How many messages the internal message buffer can hold before flushing (sending).</td><td>500</td></tr>
-<tr><td><code>druid.emitter.http.basicAuthentication</code></td><td><a href="/docs/latest/operations/password-provider.html">Password Provider</a> for providing Login and password for authentication in "login:password" form, e.g., <code>druid.emitter.http.basicAuthentication=admin:adminpassword</code> uses Default Password Provider which allows plain text passwords.</td><td>not specified = no authentication</td></tr>
+<tr><td><code>druid.emitter.http.basicAuthentication</code></td><td><a href="/docs/26.0.0/operations/password-provider.html">Password Provider</a> for providing Login and password for authentication in "login:password" form, e.g., <code>druid.emitter.http.basicAuthentication=admin:adminpassword</code> uses Default Password Provider which allows plain text passwords.</td><td>not specified = no authentication</td></tr>
<tr><td><code>druid.emitter.http.flushTimeOut</code></td><td>The timeout after which an event should be sent to the endpoint, even if internal buffers are not filled, in milliseconds.</td><td>not specified = no timeout</td></tr>
<tr><td><code>druid.emitter.http.batchingStrategy</code></td><td>The strategy of how the batch is formatted. "ARRAY" means <code>[event1,event2]</code>, "NEWLINES" means <code>event1\nevent2</code>, ONLY_EVENTS means <code>event1event2</code>.</td><td>ARRAY</td></tr>
<tr><td><code>druid.emitter.http.maxBatchSize</code></td><td>The maximum batch size, in bytes.</td><td>the minimum of (10% of JVM heap size divided by 2) or (5242880 (i. e. 5 MiB))</td></tr>
@@ -517,7 +518,7 @@ See <a href="/docs/latest/operations/metrics.html">Metrics</a> for more details
</tbody>
</table>
<h5><a class="anchor" aria-hidden="true" id="http-emitter-module-tls-overrides"></a><a href="#http-emitter-module-tls-overrides" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S1 [...]
-<p>By default, when sending events to a TLS-enabled receiver, the HTTP Emitter uses an SSLContext obtained from the process described at <a href="/docs/latest/operations/tls-support.html">Druid's internal communication over TLS</a>, i.e., the same
+<p>By default, when sending events to a TLS-enabled receiver, the HTTP Emitter uses an SSLContext obtained from the process described at <a href="/docs/26.0.0/operations/tls-support.html">Druid's internal communication over TLS</a>, i.e., the same
SSLContext that would be used for internal communications between Druid processes.</p>
<p>In some use cases it may be desirable to have the HTTP Emitter use its own separate truststore configuration. For example, there may be organizational policies that prevent the TLS-enabled metrics receiver's certificate from being added to the same truststore used by Druid's internal HTTP client.</p>
<p>The following properties allow the HTTP Emitter to use its own truststore configuration when building its SSLContext.</p>
@@ -530,7 +531,7 @@ SSLContext that would be used for internal communications between Druid processe
<tr><td><code>druid.emitter.http.ssl.trustStorePath</code></td><td>The file path or URL of the TLS/SSL Key store where trusted root certificates are stored. If this is unspecified, the HTTP Emitter will use the same SSLContext as Druid's internal HTTP client, as described in the beginning of this section, and all other properties below are ignored.</td><td>null</td></tr>
<tr><td><code>druid.emitter.http.ssl.trustStoreType</code></td><td>The type of the key store where trusted root certificates are stored.</td><td><code>java.security.KeyStore.getDefaultType()</code></td></tr>
<tr><td><code>druid.emitter.http.ssl.trustStoreAlgorithm</code></td><td>Algorithm to be used by TrustManager to validate certificate chains</td><td><code>javax.net.ssl.TrustManagerFactory.getDefaultAlgorithm()</code></td></tr>
-<tr><td><code>druid.emitter.http.ssl.trustStorePassword</code></td><td>The <a href="/docs/latest/operations/password-provider.html">Password Provider</a> or String password for the Trust Store.</td><td>none</td></tr>
+<tr><td><code>druid.emitter.http.ssl.trustStorePassword</code></td><td>The <a href="/docs/26.0.0/operations/password-provider.html">Password Provider</a> or String password for the Trust Store.</td><td>none</td></tr>
<tr><td><code>druid.emitter.http.ssl.protocol</code></td><td>TLS protocol to use.</td><td>"TLSv1.2"</td></tr>
</tbody>
</table>
@@ -562,9 +563,20 @@ Instead use <code>recipientBaseUrlPattern</code> described in the table below.</
</tbody>
</table>
<h5><a class="anchor" aria-hidden="true" id="graphite-emitter"></a><a href="#graphite-emitter" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2. [...]
-<p>To use graphite as emitter set <code>druid.emitter=graphite</code>. For configuration details, see <a href="/docs/latest/development/extensions-contrib/graphite.html">Graphite emitter</a> for the Graphite emitter Druid extension.</p>
+<p>To use graphite as emitter set <code>druid.emitter=graphite</code>. For configuration details, see <a href="/docs/26.0.0/development/extensions-contrib/graphite.html">Graphite emitter</a> for the Graphite emitter Druid extension.</p>
+<h5><a class="anchor" aria-hidden="true" id="switching-emitter"></a><a href="#switching-emitter" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2- [...]
+<p>To use switching as emitter set <code>druid.emitter=switching</code>.</p>
+<table>
+<thead>
+<tr><th>Property</th><th>Description</th><th>Default</th></tr>
+</thead>
+<tbody>
+<tr><td><code>druid.emitter.switching.emitters</code></td><td>JSON map of feed to list of emitter modules that will be used for the mapped feed, e.g., {"metrics":["http"], "alerts":["logging"]}</td><td>{}</td></tr>
+<tr><td><code>druid.emitter.switching.defaultEmitters</code></td><td>JSON list of emitter modules to load that will be used if there is no emitter specifically designated for that event's feed, e.g., ["logging","http"].</td><td>[]</td></tr>
+</tbody>
+</table>
<h3><a class="anchor" aria-hidden="true" id="metadata-storage"></a><a href="#metadata-storage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2. [...]
-<p>These properties specify the JDBC connection and other configuration around the metadata storage. The only processes that connect to the metadata storage with these properties are the <a href="/docs/latest/design/coordinator.html">Coordinator</a> and <a href="/docs/latest/design/overlord.html">Overlord</a>.</p>
+<p>These properties specify the JDBC connection and other configuration around the metadata storage. The only processes that connect to the metadata storage with these properties are the <a href="/docs/26.0.0/design/coordinator.html">Coordinator</a> and <a href="/docs/26.0.0/design/overlord.html">Overlord</a>.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
@@ -573,23 +585,23 @@ Instead use <code>recipientBaseUrlPattern</code> described in the table below.</
<tr><td><code>druid.metadata.storage.type</code></td><td>The type of metadata storage to use. Choose from "mysql", "postgresql", or "derby".</td><td>derby</td></tr>
<tr><td><code>druid.metadata.storage.connector.connectURI</code></td><td>The JDBC URI for the database to connect to</td><td>none</td></tr>
<tr><td><code>druid.metadata.storage.connector.user</code></td><td>The username to connect with.</td><td>none</td></tr>
-<tr><td><code>druid.metadata.storage.connector.password</code></td><td>The <a href="/docs/latest/operations/password-provider.html">Password Provider</a> or String password used to connect with.</td><td>none</td></tr>
+<tr><td><code>druid.metadata.storage.connector.password</code></td><td>The <a href="/docs/26.0.0/operations/password-provider.html">Password Provider</a> or String password used to connect with.</td><td>none</td></tr>
<tr><td><code>druid.metadata.storage.connector.createTables</code></td><td>If Druid requires a table and it doesn't exist, create it?</td><td>true</td></tr>
<tr><td><code>druid.metadata.storage.tables.base</code></td><td>The base name for tables.</td><td>druid</td></tr>
-<tr><td><code>druid.metadata.storage.tables.dataSource</code></td><td>The table to use to look for dataSources which created by <a href="/docs/latest/development/extensions-core/kafka-ingestion.html">Kafka Indexing Service</a>.</td><td>druid_dataSource</td></tr>
+<tr><td><code>druid.metadata.storage.tables.dataSource</code></td><td>The table to use to look for dataSources which created by <a href="/docs/26.0.0/development/extensions-core/kafka-ingestion.html">Kafka Indexing Service</a>.</td><td>druid_dataSource</td></tr>
<tr><td><code>druid.metadata.storage.tables.pendingSegments</code></td><td>The table to use to look for pending segments.</td><td>druid_pendingSegments</td></tr>
<tr><td><code>druid.metadata.storage.tables.segments</code></td><td>The table to use to look for segments.</td><td>druid_segments</td></tr>
<tr><td><code>druid.metadata.storage.tables.rules</code></td><td>The table to use to look for segment load/drop rules.</td><td>druid_rules</td></tr>
<tr><td><code>druid.metadata.storage.tables.config</code></td><td>The table to use to look for configs.</td><td>druid_config</td></tr>
<tr><td><code>druid.metadata.storage.tables.tasks</code></td><td>Used by the indexing service to store tasks.</td><td>druid_tasks</td></tr>
-<tr><td><code>druid.metadata.storage.tables.taskLog</code></td><td>Used by the indexing service to store task logs.</td><td>druid_taskLog</td></tr>
-<tr><td><code>druid.metadata.storage.tables.taskLock</code></td><td>Used by the indexing service to store task locks.</td><td>druid_taskLock</td></tr>
+<tr><td><code>druid.metadata.storage.tables.taskLog</code></td><td>Used by the indexing service to store task logs.</td><td>druid_tasklogs</td></tr>
+<tr><td><code>druid.metadata.storage.tables.taskLock</code></td><td>Used by the indexing service to store task locks.</td><td>druid_tasklocks</td></tr>
<tr><td><code>druid.metadata.storage.tables.supervisors</code></td><td>Used by the indexing service to store supervisor configurations.</td><td>druid_supervisors</td></tr>
<tr><td><code>druid.metadata.storage.tables.audit</code></td><td>The table to use for audit history of configuration changes, e.g., Coordinator rules.</td><td>druid_audit</td></tr>
</tbody>
</table>
<h3><a class="anchor" aria-hidden="true" id="deep-storage"></a><a href="#deep-storage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
-<p>The configurations concern how to push and pull <a href="/docs/latest/design/segments.html">Segments</a> from deep storage.</p>
+<p>The configurations concern how to push and pull <a href="/docs/26.0.0/design/segments.html">Segments</a> from deep storage.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
@@ -612,7 +624,7 @@ Instead use <code>recipientBaseUrlPattern</code> described in the table below.</
<p>This deep storage doesn't do anything. There are no configs.</p>
<h4><a class="anchor" aria-hidden="true" id="s3-deep-storage"></a><a href="#s3-deep-storage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 [...]
<p>This deep storage is used to interface with Amazon's S3. Note that the <code>druid-s3-extensions</code> extension must be loaded.
-The below table shows some important configurations for S3. See <a href="/docs/latest/development/extensions-core/s3.html">S3 Deep Storage</a> for full configurations.</p>
+The below table shows some important configurations for S3. See <a href="/docs/26.0.0/development/extensions-core/s3.html">S3 Deep Storage</a> for full configurations.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
@@ -620,10 +632,10 @@ The below table shows some important configurations for S3. See <a href="/docs/l
<tbody>
<tr><td><code>druid.storage.bucket</code></td><td>S3 bucket name.</td><td>none</td></tr>
<tr><td><code>druid.storage.baseKey</code></td><td>S3 object key prefix for storage.</td><td>none</td></tr>
-<tr><td><code>druid.storage.disableAcl</code></td><td>Boolean flag for ACL. If this is set to <code>false</code>, the full control would be granted to the bucket owner. This may require to set additional permissions. See <a href="/docs/latest/development/extensions-core/s3.html#s3-permissions-settings">S3 permissions settings</a>.</td><td>false</td></tr>
+<tr><td><code>druid.storage.disableAcl</code></td><td>Boolean flag for ACL. If this is set to <code>false</code>, the full control would be granted to the bucket owner. This may require to set additional permissions. See <a href="/docs/26.0.0/development/extensions-core/s3.html#s3-permissions-settings">S3 permissions settings</a>.</td><td>false</td></tr>
<tr><td><code>druid.storage.archiveBucket</code></td><td>S3 bucket name for archiving when running the <em>archive task</em>.</td><td>none</td></tr>
<tr><td><code>druid.storage.archiveBaseKey</code></td><td>S3 object key prefix for archiving.</td><td>none</td></tr>
-<tr><td><code>druid.storage.sse.type</code></td><td>Server-side encryption type. Should be one of <code>s3</code>, <code>kms</code>, and <code>custom</code>. See the below <a href="/docs/latest/development/extensions-core/s3.html#server-side-encryption">Server-side encryption section</a> for more details.</td><td>None</td></tr>
+<tr><td><code>druid.storage.sse.type</code></td><td>Server-side encryption type. Should be one of <code>s3</code>, <code>kms</code>, and <code>custom</code>. See the below <a href="/docs/26.0.0/development/extensions-core/s3.html#server-side-encryption">Server-side encryption section</a> for more details.</td><td>None</td></tr>
<tr><td><code>druid.storage.sse.kms.keyId</code></td><td>AWS KMS key ID. This is used only when <code>druid.storage.sse.type</code> is <code>kms</code> and can be empty to use the default key ID.</td><td>None</td></tr>
<tr><td><code>druid.storage.sse.custom.base64EncodedKey</code></td><td>Base64-encoded key. Should be specified if <code>druid.storage.sse.type</code> is <code>custom</code>.</td><td>None</td></tr>
<tr><td><code>druid.storage.useS3aSchema</code></td><td>If true, use the "s3a" filesystem when using Hadoop-based ingestion. If false, the "s3n" filesystem will be used. Only affects Hadoop-based ingestion.</td><td>false</td></tr>
@@ -653,7 +665,7 @@ The below table shows some important configurations for S3. See <a href="/docs/l
<h3><a class="anchor" aria-hidden="true" id="ingestion-security-configuration"></a><a href="#ingestion-security-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13. [...]
<h4><a class="anchor" aria-hidden="true" id="hdfs-input-source"></a><a href="#hdfs-input-source" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2- [...]
<p>You can set the following property to specify permissible protocols for
-the <a href="/docs/latest/ingestion/native-batch-input-sources.html#hdfs-input-source">HDFS input source</a> and the <a href="/docs/latest/ingestion/native-batch-firehose.html#hdfsfirehose">HDFS firehose</a>.</p>
+the <a href="/docs/26.0.0/ingestion/native-batch-input-sources.html#hdfs-input-source">HDFS input source</a>.</p>
<table>
<thead>
<tr><th>Property</th><th>Possible Values</th><th>Description</th><th>Default</th></tr>
@@ -664,7 +676,7 @@ the <a href="/docs/latest/ingestion/native-batch-input-sources.html#hdfs-input-s
</table>
<h4><a class="anchor" aria-hidden="true" id="http-input-source"></a><a href="#http-input-source" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2- [...]
<p>You can set the following property to specify permissible protocols for
-the <a href="/docs/latest/ingestion/native-batch-input-sources.html#http-input-source">HTTP input source</a> and the <a href="/docs/latest/ingestion/native-batch-firehose.html#httpfirehose">HTTP firehose</a>.</p>
+the <a href="/docs/26.0.0/ingestion/native-batch-input-sources.html#http-input-source">HTTP input source</a>.</p>
<table>
<thead>
<tr><th>Property</th><th>Possible Values</th><th>Description</th><th>Default</th></tr>
@@ -677,10 +689,9 @@ the <a href="/docs/latest/ingestion/native-batch-input-sources.html#http-input-s
<h4><a class="anchor" aria-hidden="true" id="jdbc-connections-to-external-databases"></a><a href="#jdbc-connections-to-external-databases" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1. [...]
<p>You can use the following properties to specify permissible JDBC options for:</p>
<ul>
-<li><a href="/docs/latest/ingestion/native-batch-input-sources.html#sql-input-source">SQL input source</a></li>
-<li><a href="/docs/latest/ingestion/native-batch-firehose.html#sqlfirehose">SQL firehose</a>,</li>
-<li><a href="/docs/latest/development/extensions-core/lookups-cached-global.html#jdbc-lookup">globally cached JDBC lookups</a></li>
-<li><a href="/docs/latest/development/extensions-core/druid-lookups.html#data-fetcher-layer">JDBC Data Fetcher for per-lookup caching</a>.</li>
+<li><a href="/docs/26.0.0/ingestion/native-batch-input-sources.html#sql-input-source">SQL input source</a></li>
+<li><a href="/docs/26.0.0/development/extensions-core/lookups-cached-global.html#jdbc-lookup">globally cached JDBC lookups</a></li>
+<li><a href="/docs/26.0.0/development/extensions-core/druid-lookups.html#data-fetcher-layer">JDBC Data Fetcher for per-lookup caching</a>.</li>
</ul>
<p>These properties do not apply to metadata storage connections.</p>
<table>
@@ -695,7 +706,7 @@ the <a href="/docs/latest/ingestion/native-batch-input-sources.html#http-input-s
</table>
<h3><a class="anchor" aria-hidden="true" id="task-logging"></a><a href="#task-logging" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
<p>You can use the <code>druid.indexer</code> configuration to set a <a href="#log-long-term-storage">long-term storage</a> location for task log files, and to set a <a href="#log-retention-policy">retention policy</a>.</p>
-<p>For more information about ingestion tasks and the process of generating logs, see the <a href="/docs/latest/ingestion/tasks.html">task reference</a>.</p>
+<p>For more information about ingestion tasks and the process of generating logs, see the <a href="/docs/26.0.0/ingestion/tasks.html">task reference</a>.</p>
<h4><a class="anchor" aria-hidden="true" id="log-long-term-storage"></a><a href="#log-long-term-storage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2 [...]
<table>
<thead>
@@ -815,7 +826,7 @@ This is the default Druid error response mode. To explicitly enable this strateg
<pre><code class="hljs">{<span class="hljs-attr">"error"</span>:<span class="hljs-string">"Plan validation failed"</span>,<span class="hljs-attr">"errorMessage"</span>:<span class="hljs-string">"org.apache.calcite.runtime.CalciteContextException: From line 1, column 15 to line 1, column 38: Object 'nonexistent-datasource' not found"</span>,<span class="hljs-attr">"errorClass"</span>:<span class="hljs-literal">null</span>,<span class="hljs-attr">"host"</span>:<span class="hljs-literal">nu [...]
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="overlord-discovery"></a><a href="#overlord-discovery" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22- [...]
-<p>This config is used to find the <a href="/docs/latest/design/overlord.html">Overlord</a> using Curator service discovery. Only required if you are actually running an Overlord.</p>
+<p>This config is used to find the <a href="/docs/26.0.0/design/overlord.html">Overlord</a> using Curator service discovery. Only required if you are actually running an Overlord.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
@@ -825,7 +836,7 @@ This is the default Druid error response mode. To explicitly enable this strateg
</tbody>
</table>
<h3><a class="anchor" aria-hidden="true" id="coordinator-discovery"></a><a href="#coordinator-discovery" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2 [...]
-<p>This config is used to find the <a href="/docs/latest/design/coordinator.html">Coordinator</a> using Curator service discovery. This config is used by the realtime indexing processes to get information about the segments loaded in the cluster.</p>
+<p>This config is used to find the <a href="/docs/26.0.0/design/coordinator.html">Coordinator</a> using Curator service discovery. This config is used by the realtime indexing processes to get information about the segments loaded in the cluster.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
@@ -870,7 +881,7 @@ the following properties.</p>
</tbody>
</table>
<blockquote>
-<p>JavaScript-based functionality is disabled by default. Please refer to the Druid <a href="/docs/latest/development/javascript.html">JavaScript programming guide</a> for guidelines about using Druid's JavaScript functionality, including instructions on how to enable it.</p>
+<p>JavaScript-based functionality is disabled by default. Please refer to the Druid <a href="/docs/26.0.0/development/javascript.html">JavaScript programming guide</a> for guidelines about using Druid's JavaScript functionality, including instructions on how to enable it.</p>
</blockquote>
<h3><a class="anchor" aria-hidden="true" id="double-column-storage"></a><a href="#double-column-storage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2 [...]
<p>Prior to version 0.13.0, Druid's storage layer used a 32-bit float representation to store columns created by the
@@ -899,7 +910,7 @@ Support for 64-bit floating point columns was released in Druid 0.11.0, so if yo
<tr><td><code>druid.generic.ignoreNullsForStringCardinality</code></td><td>When set to <code>true</code>, <code>null</code> values will be ignored for the built-in cardinality aggregator over string columns. Set to <code>false</code> to include <code>null</code> values while estimating cardinality of only string columns using the built-in cardinality aggregator. This setting takes effect only when <code>druid.generic.useDefaultValueForNull</code> is set to <code>true</code> and is ignore [...]
</tbody>
</table>
-<p>This mode does have a storage size and query performance cost, see <a href="/docs/latest/design/segments.html#handling-null-values">segment documentation</a> for more details.</p>
+<p>This mode does have a storage size and query performance cost, see <a href="/docs/26.0.0/design/segments.html#handling-null-values">segment documentation</a> for more details.</p>
<h3><a class="anchor" aria-hidden="true" id="http-client"></a><a href="#http-client" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42 [...]
<p>All Druid components can communicate with each other over HTTP.</p>
<table>
@@ -926,9 +937,9 @@ Support for 64-bit floating point columns was released in Druid 0.11.0, so if yo
</tbody>
</table>
<h2><a class="anchor" aria-hidden="true" id="master-server"></a><a href="#master-server" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
-<p>This section contains the configuration options for the processes that reside on Master servers (Coordinators and Overlords) in the suggested <a href="/docs/latest/design/processes.html#server-types">three-server configuration</a>.</p>
+<p>This section contains the configuration options for the processes that reside on Master servers (Coordinators and Overlords) in the suggested <a href="/docs/26.0.0/design/processes.html#server-types">three-server configuration</a>.</p>
<h3><a class="anchor" aria-hidden="true" id="coordinator"></a><a href="#coordinator" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42 [...]
-<p>For general Coordinator Process information, see <a href="/docs/latest/design/coordinator.html">here</a>.</p>
+<p>For general Coordinator Process information, see <a href="/docs/26.0.0/design/coordinator.html">here</a>.</p>
<h4><a class="anchor" aria-hidden="true" id="static-configuration"></a><a href="#static-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1 [...]
<p>These Coordinator static configurations can be defined in the <code>coordinator/runtime.properties</code> file.</p>
<h5><a class="anchor" aria-hidden="true" id="coordinator-process-config"></a><a href="#coordinator-process-config" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H [...]
@@ -940,7 +951,7 @@ Support for 64-bit floating point columns was released in Druid 0.11.0, so if yo
<tr><td><code>druid.host</code></td><td>The host for the current process. This is used to advertise the current processes location as reachable from another process and should generally be specified such that <code>http://${druid.host}/</code> could actually talk to this process</td><td>InetAddress.getLocalHost().getCanonicalHostName()</td></tr>
<tr><td><code>druid.bindOnHost</code></td><td>Indicating whether the process's internal jetty server bind on <code>druid.host</code>. Default is false, which means binding to all interfaces.</td><td>false</td></tr>
<tr><td><code>druid.plaintextPort</code></td><td>This is the port to actually listen on; unless port mapping is used, this will be the same port as is on <code>druid.host</code></td><td>8081</td></tr>
-<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/latest/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>8281</td></tr>
+<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/26.0.0/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>8281</td></tr>
<tr><td><code>druid.service</code></td><td>The name of the service. This is used as a dimension when emitting metrics and alerts to differentiate between the various services</td><td>druid/coordinator</td></tr>
</tbody>
</table>
@@ -1025,7 +1036,7 @@ Support for 64-bit floating point columns was released in Druid 0.11.0, so if yo
</table>
<h4><a class="anchor" aria-hidden="true" id="dynamic-configuration"></a><a href="#dynamic-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2 [...]
<p>The Coordinator has dynamic configuration to change certain behavior on the fly.</p>
-<p>It is recommended that you use the <a href="/docs/latest/operations/web-console.html">web console</a> to configure these parameters.
+<p>It is recommended that you use the <a href="/docs/26.0.0/operations/web-console.html">web console</a> to configure these parameters.
However, if you need to do it via HTTP, the JSON object can be submitted to the Coordinator via a POST request at:</p>
<pre><code class="hljs">http:<span class="hljs-regexp">//</span><COORDINATOR_IP>:<PORT><span class="hljs-regexp">/druid/</span>coordinator<span class="hljs-regexp">/v1/</span>config
</code></pre>
@@ -1066,7 +1077,7 @@ However, if you need to do it via HTTP, the JSON object can be submitted to the
<tbody>
<tr><td><code>millisToWaitBeforeDeleting</code></td><td>How long does the Coordinator need to be a leader before it can start marking overshadowed segments as unused in metadata storage.</td><td>900000 (15 mins)</td></tr>
<tr><td><code>mergeBytesLimit</code></td><td>The maximum total uncompressed size in bytes of segments to merge.</td><td>524288000L</td></tr>
-<tr><td><code>mergeSegmentsLimit</code></td><td>The maximum number of segments that can be in a single <a href="/docs/latest/ingestion/tasks.html">append task</a>.</td><td>100</td></tr>
+<tr><td><code>mergeSegmentsLimit</code></td><td>The maximum number of segments that can be in a single <a href="/docs/26.0.0/ingestion/tasks.html">append task</a>.</td><td>100</td></tr>
<tr><td><code>maxSegmentsToMove</code></td><td>The maximum number of segments that can be moved at any given time.</td><td>5</td></tr>
<tr><td><code>useBatchedSegmentSampler</code></td><td>Deprecated. Boolean flag for whether or not we should use the Reservoir Sampling with a reservoir of size k instead of fixed size 1 to pick segments to move. This option can be enabled to speed up the sampling of segments to be balanced, especially if there is a large number of segments in the cluster or if there are too many segments to move.</td><td>true</td></tr>
<tr><td><code>percentOfSegmentsToConsiderPerMove</code></td><td>Deprecated. This will eventually be phased out by the batched segment sampler. You can enable the batched segment sampler now by setting the dynamic Coordinator config, <code>useBatchedSegmentSampler</code>, to <code>true</code>. Note that if you choose to enable the batched segment sampler, <code>percentOfSegmentsToConsiderPerMove</code> will no longer have any effect on balancing. If <code>useBatchedSegmentSampler == false [...]
@@ -1093,7 +1104,7 @@ However, if you need to do it via HTTP, the JSON object can be submitted to the
<pre><code class="hljs">http://<span class="hljs-symbol"><COORDINATOR_IP></span>:<span class="hljs-symbol"><PORT></span>/druid/coordinator/v1/config/<span class="hljs-keyword">history</span>?<span class="hljs-built_in">count</span>=<span class="hljs-symbol"><n></span>
</code></pre>
<h5><a class="anchor" aria-hidden="true" id="lookups-dynamic-configuration"></a><a href="#lookups-dynamic-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 [...]
-<p>These configuration options control the behavior of the Lookup dynamic configuration described in the <a href="/docs/latest/querying/lookups.html">lookups page</a></p>
+<p>These configuration options control Coordinator lookup management. See <a href="/docs/26.0.0/querying/lookups.html#dynamic-configuration">dynamic configuration for lookups</a> configurations that affect lookup propagation.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
@@ -1104,13 +1115,13 @@ However, if you need to do it via HTTP, the JSON object can be submitted to the
<tr><td><code>druid.manager.lookups.deleteAllTimeout</code></td><td>How long to wait for all <code>DELETE</code> requests to finish before considering the delete attempt a failure</td><td>PT10S</td></tr>
<tr><td><code>druid.manager.lookups.updateAllTimeout</code></td><td>How long to wait for all <code>POST</code> requests to finish before considering the attempt a failure</td><td>PT60S</td></tr>
<tr><td><code>druid.manager.lookups.threadPoolSize</code></td><td>How many processes can be managed concurrently (concurrent POST and DELETE requests). Requests this limit will wait in a queue until a slot becomes available.</td><td>10</td></tr>
-<tr><td><code>druid.manager.lookups.period</code></td><td>How many milliseconds between checks for configuration changes</td><td>30_000</td></tr>
+<tr><td><code>druid.manager.lookups.period</code></td><td>Number of milliseconds between checks for configuration changes</td><td>120000 (2 minutes)</td></tr>
</tbody>
</table>
<h5><a class="anchor" aria-hidden="true" id="automatic-compaction-dynamic-configuration"></a><a href="#automatic-compaction-dynamic-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c [...]
-<p>You can set or update <a href="/docs/latest/data-management/automatic-compaction.html">automatic compaction</a> properties dynamically using the
-<a href="/docs/latest/operations/api-reference.html#automatic-compaction-configuration">Coordinator API</a> without restarting Coordinators.</p>
-<p>For details about segment compaction, see <a href="/docs/latest/operations/segment-optimization.html">Segment size optimization</a>.</p>
+<p>You can set or update <a href="/docs/26.0.0/data-management/automatic-compaction.html">automatic compaction</a> properties dynamically using the
+<a href="/docs/26.0.0/operations/api-reference.html#automatic-compaction-configuration">Coordinator API</a> without restarting Coordinators.</p>
+<p>For details about segment compaction, see <a href="/docs/26.0.0/operations/segment-optimization.html">Segment size optimization</a>.</p>
<p>You can configure automatic compaction through the following properties:</p>
<table>
<thead>
@@ -1118,15 +1129,15 @@ However, if you need to do it via HTTP, the JSON object can be submitted to the
</thead>
<tbody>
<tr><td><code>dataSource</code></td><td>dataSource name to be compacted.</td><td>yes</td></tr>
-<tr><td><code>taskPriority</code></td><td><a href="/docs/latest/ingestion/tasks.html#priority">Priority</a> of compaction task.</td><td>no (default = 25)</td></tr>
+<tr><td><code>taskPriority</code></td><td><a href="/docs/26.0.0/ingestion/tasks.html#priority">Priority</a> of compaction task.</td><td>no (default = 25)</td></tr>
<tr><td><code>inputSegmentSizeBytes</code></td><td>Maximum number of total segment bytes processed per compaction task. Since a time chunk must be processed in its entirety, if the segments for a particular time chunk have a total size in bytes greater than this parameter, compaction will not run for that time chunk.</td><td>no (default = 100,000,000,000,000 i.e. 100TB)</td></tr>
-<tr><td><code>skipOffsetFromLatest</code></td><td>The offset for searching segments to be compacted in <a href="https://en.wikipedia.org/wiki/ISO_8601">ISO 8601</a> duration format. Strongly recommended to set for realtime dataSources. See <a href="/docs/latest/data-management/compaction.html#data-handling-with-compaction">Data handling with compaction</a>.</td><td>no (default = "P1D")</td></tr>
+<tr><td><code>skipOffsetFromLatest</code></td><td>The offset for searching segments to be compacted in <a href="https://en.wikipedia.org/wiki/ISO_8601">ISO 8601</a> duration format. Strongly recommended to set for realtime dataSources. See <a href="/docs/26.0.0/data-management/compaction.html#data-handling-with-compaction">Data handling with compaction</a>.</td><td>no (default = "P1D")</td></tr>
<tr><td><code>tuningConfig</code></td><td>Tuning config for compaction tasks. See below <a href="#automatic-compaction-tuningconfig">Automatic compaction tuningConfig</a>.</td><td>no</td></tr>
-<tr><td><code>taskContext</code></td><td><a href="/docs/latest/ingestion/tasks.html#context">Task context</a> for compaction tasks.</td><td>no</td></tr>
+<tr><td><code>taskContext</code></td><td><a href="/docs/26.0.0/ingestion/tasks.html#context">Task context</a> for compaction tasks.</td><td>no</td></tr>
<tr><td><code>granularitySpec</code></td><td>Custom <code>granularitySpec</code>. See <a href="#automatic-compaction-granularityspec">Automatic compaction granularitySpec</a>.</td><td>No</td></tr>
<tr><td><code>dimensionsSpec</code></td><td>Custom <code>dimensionsSpec</code>. See <a href="#automatic-compaction-dimensionsspec">Automatic compaction dimensionsSpec</a>.</td><td>No</td></tr>
<tr><td><code>transformSpec</code></td><td>Custom <code>transformSpec</code>. See <a href="#automatic-compaction-transformspec">Automatic compaction transformSpec</a>.</td><td>No</td></tr>
-<tr><td><code>metricsSpec</code></td><td>Custom <a href="/docs/latest/ingestion/ingestion-spec.html#metricsspec"><code>metricsSpec</code></a>. The compaction task preserves any existing metrics regardless of whether <code>metricsSpec</code> is specified. If <code>metricsSpec</code> is specified, Druid does not reapply any aggregators matching the metric names specified in <code>metricsSpec</code> to rows that already have the associated metrics. For rows that do not already have the metr [...]
+<tr><td><code>metricsSpec</code></td><td>Custom <a href="/docs/26.0.0/ingestion/ingestion-spec.html#metricsspec"><code>metricsSpec</code></a>. The compaction task preserves any existing metrics regardless of whether <code>metricsSpec</code> is specified. If <code>metricsSpec</code> is specified, Druid does not reapply any aggregators matching the metric names specified in <code>metricsSpec</code> to rows that already have the associated metrics. For rows that do not already have the metr [...]
<tr><td><code>ioConfig</code></td><td>IO config for compaction tasks. See <a href="#automatic-compaction-ioconfig">Automatic compaction ioConfig</a>.</td><td>no</td></tr>
</tbody>
</table>
@@ -1142,9 +1153,9 @@ However, if you need to do it via HTTP, the JSON object can be submitted to the
You may see this issue with streaming ingestion from Kafka and Kinesis, which ingest late-arriving data.</p>
<p>To mitigate this problem, set <code>skipOffsetFromLatest</code> to a value large enough so that arriving data tends to fall outside the offset value from the current time. This way you can avoid conflicts between compaction tasks and realtime ingestion tasks.
For example, if you want to skip over segments from thirty days prior to the end time of the most recent segment, assign <code>"skipOffsetFromLatest": "P30D"</code>.
-For more information, see <a href="/docs/latest/data-management/automatic-compaction.html#avoid-conflicts-with-ingestion">Avoid conflicts with ingestion</a>.</p>
+For more information, see <a href="/docs/26.0.0/data-management/automatic-compaction.html#avoid-conflicts-with-ingestion">Avoid conflicts with ingestion</a>.</p>
<h6><a class="anchor" aria-hidden="true" id="automatic-compaction-tuningconfig"></a><a href="#automatic-compaction-tuningconfig" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S1 [...]
-<p>Auto-compaction supports a subset of the <a href="/docs/latest/ingestion/native-batch.html#tuningconfig">tuningConfig for Parallel task</a>.
+<p>Auto-compaction supports a subset of the <a href="/docs/26.0.0/ingestion/native-batch.html#tuningconfig">tuningConfig for Parallel task</a>.
The below is a list of the supported configurations for auto-compaction.</p>
<table>
<thead>
@@ -1154,14 +1165,14 @@ The below is a list of the supported configurations for auto-compaction.</p>
<tr><td>type</td><td>The task type, this should always be <code>index_parallel</code>.</td><td>yes</td></tr>
<tr><td><code>maxRowsInMemory</code></td><td>Used in determining when intermediate persists to disk should occur. Normally user does not need to set this, but depending on the nature of data, if rows are short in terms of bytes, user may not want to store a million rows in memory and this value should be set.</td><td>no (default = 1000000)</td></tr>
<tr><td><code>maxBytesInMemory</code></td><td>Used in determining when intermediate persists to disk should occur. Normally this is computed internally and user does not need to set it. This value represents number of bytes to aggregate in heap memory before persisting. This is based on a rough estimate of memory usage and not actual usage. The maximum heap memory usage for indexing is <code>maxBytesInMemory</code> * (2 + <code>maxPendingPersists</code>)</td><td>no (default = 1/6 of max [...]
-<tr><td><code>splitHintSpec</code></td><td>Used to give a hint to control the amount of data that each first phase task reads. This hint could be ignored depending on the implementation of the input source. See <a href="/docs/latest/ingestion/native-batch.html#split-hint-spec">Split hint spec</a> for more details.</td><td>no (default = size-based split hint spec)</td></tr>
-<tr><td><code>partitionsSpec</code></td><td>Defines how to partition data in each time chunk, see <a href="/docs/latest/ingestion/native-batch.html#partitionsspec"><code>PartitionsSpec</code></a></td><td>no (default = <code>dynamic</code>)</td></tr>
-<tr><td><code>indexSpec</code></td><td>Defines segment storage format options to be used at indexing time, see <a href="/docs/latest/ingestion/ingestion-spec.html#indexspec">IndexSpec</a></td><td>no</td></tr>
-<tr><td><code>indexSpecForIntermediatePersists</code></td><td>Defines segment storage format options to be used at indexing time for intermediate persisted temporary segments. this can be used to disable dimension/metric compression on intermediate segments to reduce memory required for final merging. however, disabling compression on intermediate segments might increase page cache use while they are used before getting merged into final segment published, see <a href="/docs/latest/inges [...]
+<tr><td><code>splitHintSpec</code></td><td>Used to give a hint to control the amount of data that each first phase task reads. This hint could be ignored depending on the implementation of the input source. See <a href="/docs/26.0.0/ingestion/native-batch.html#split-hint-spec">Split hint spec</a> for more details.</td><td>no (default = size-based split hint spec)</td></tr>
+<tr><td><code>partitionsSpec</code></td><td>Defines how to partition data in each time chunk, see <a href="/docs/26.0.0/ingestion/native-batch.html#partitionsspec"><code>PartitionsSpec</code></a></td><td>no (default = <code>dynamic</code>)</td></tr>
+<tr><td><code>indexSpec</code></td><td>Defines segment storage format options to be used at indexing time, see <a href="/docs/26.0.0/ingestion/ingestion-spec.html#indexspec">IndexSpec</a></td><td>no</td></tr>
+<tr><td><code>indexSpecForIntermediatePersists</code></td><td>Defines segment storage format options to be used at indexing time for intermediate persisted temporary segments. this can be used to disable dimension/metric compression on intermediate segments to reduce memory required for final merging. however, disabling compression on intermediate segments might increase page cache use while they are used before getting merged into final segment published, see <a href="/docs/26.0.0/inges [...]
<tr><td><code>maxPendingPersists</code></td><td>Maximum number of persists that can be pending but not started. If this limit would be exceeded by a new intermediate persist, ingestion will block until the currently-running persist finishes. Maximum heap memory usage for indexing scales with <code>maxRowsInMemory</code> * (2 + <code>maxPendingPersists</code>).</td><td>no (default = 0, meaning one persist can be running concurrently with ingestion, and none can be queued up)</td></tr>
<tr><td><code>pushTimeout</code></td><td>Milliseconds to wait for pushing segments. It must be >= 0, where 0 means to wait forever.</td><td>no (default = 0)</td></tr>
-<tr><td><code>segmentWriteOutMediumFactory</code></td><td>Segment write-out medium to use when creating segments. See <a href="/docs/latest/ingestion/native-batch.html#segmentwriteoutmediumfactory">SegmentWriteOutMediumFactory</a>.</td><td>no (default is the value from <code>druid.peon.defaultSegmentWriteOutMediumFactory.type</code> is used)</td></tr>
-<tr><td><code>maxNumConcurrentSubTasks</code></td><td>Maximum number of worker tasks which can be run in parallel at the same time. The supervisor task would spawn worker tasks up to <code>maxNumConcurrentSubTasks</code> regardless of the current available task slots. If this value is set to 1, the supervisor task processes data ingestion on its own instead of spawning worker tasks. If this value is set to too large, too many worker tasks can be created which might block other ingestion. [...]
+<tr><td><code>segmentWriteOutMediumFactory</code></td><td>Segment write-out medium to use when creating segments. See <a href="/docs/26.0.0/ingestion/native-batch.html#segmentwriteoutmediumfactory">SegmentWriteOutMediumFactory</a>.</td><td>no (default is the value from <code>druid.peon.defaultSegmentWriteOutMediumFactory.type</code> is used)</td></tr>
+<tr><td><code>maxNumConcurrentSubTasks</code></td><td>Maximum number of worker tasks which can be run in parallel at the same time. The supervisor task would spawn worker tasks up to <code>maxNumConcurrentSubTasks</code> regardless of the current available task slots. If this value is set to 1, the supervisor task processes data ingestion on its own instead of spawning worker tasks. If this value is set to too large, too many worker tasks can be created which might block other ingestion. [...]
<tr><td><code>maxRetry</code></td><td>Maximum number of retries on task failures.</td><td>no (default = 3)</td></tr>
<tr><td><code>maxNumSegmentsToMerge</code></td><td>Max limit for the number of segments that a single task can merge at the same time in the second phase. Used only with <code>hashed</code> or <code>single_dim</code> partitionsSpec.</td><td>no (default = 100)</td></tr>
<tr><td><code>totalNumMergeTasks</code></td><td>Total number of tasks to merge segments in the merge phase when <code>partitionsSpec</code> is set to <code>hashed</code> or <code>single_dim</code>.</td><td>no (default = 10)</td></tr>
@@ -1176,8 +1187,8 @@ The below is a list of the supported configurations for auto-compaction.</p>
<tr><th>Field</th><th>Description</th><th>Required</th></tr>
</thead>
<tbody>
-<tr><td><code>segmentGranularity</code></td><td>Time chunking period for the segment granularity. Defaults to 'null', which preserves the original segment granularity. Accepts all <a href="/docs/latest/querying/granularities.html">Query granularity</a> values.</td><td>No</td></tr>
-<tr><td><code>queryGranularity</code></td><td>The resolution of timestamp storage within each segment. Defaults to 'null', which preserves the original query granularity. Accepts all <a href="/docs/latest/querying/granularities.html">Query granularity</a> values.</td><td>No</td></tr>
+<tr><td><code>segmentGranularity</code></td><td>Time chunking period for the segment granularity. Defaults to 'null', which preserves the original segment granularity. Accepts all <a href="/docs/26.0.0/querying/granularities.html">Query granularity</a> values.</td><td>No</td></tr>
+<tr><td><code>queryGranularity</code></td><td>The resolution of timestamp storage within each segment. Defaults to 'null', which preserves the original query granularity. Accepts all <a href="/docs/26.0.0/querying/granularities.html">Query granularity</a> values.</td><td>No</td></tr>
<tr><td><code>rollup</code></td><td>Whether to enable ingestion-time rollup or not. Defaults to 'null', which preserves the original setting. Note that once data is rollup, individual records can no longer be recovered.</td><td>No</td></tr>
</tbody>
</table>
@@ -1196,11 +1207,11 @@ The below is a list of the supported configurations for auto-compaction.</p>
<tr><th>Field</th><th>Description</th><th>Required</th></tr>
</thead>
<tbody>
-<tr><td><code>filter</code></td><td>The <code>filter</code> conditionally filters input rows during compaction. Only rows that pass the filter will be included in the compacted segments. Any of Druid's standard <a href="/docs/latest/querying/filters.html">query filters</a> can be used. Defaults to 'null', which will not filter any row.</td><td>No</td></tr>
+<tr><td><code>filter</code></td><td>The <code>filter</code> conditionally filters input rows during compaction. Only rows that pass the filter will be included in the compacted segments. Any of Druid's standard <a href="/docs/26.0.0/querying/filters.html">query filters</a> can be used. Defaults to 'null', which will not filter any row.</td><td>No</td></tr>
</tbody>
</table>
<h6><a class="anchor" aria-hidden="true" id="automatic-compaction-ioconfig"></a><a href="#automatic-compaction-ioconfig" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 [...]
-<p>Auto-compaction supports a subset of the <a href="/docs/latest/ingestion/native-batch.html">ioConfig for Parallel task</a>.
+<p>Auto-compaction supports a subset of the <a href="/docs/26.0.0/ingestion/native-batch.html">ioConfig for Parallel task</a>.
The below is a list of the supported configurations for auto-compaction.</p>
<table>
<thead>
@@ -1211,7 +1222,7 @@ The below is a list of the supported configurations for auto-compaction.</p>
</tbody>
</table>
<h3><a class="anchor" aria-hidden="true" id="overlord"></a><a href="#overlord" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 [...]
-<p>For general Overlord Process information, see <a href="/docs/latest/design/overlord.html">here</a>.</p>
+<p>For general Overlord Process information, see <a href="/docs/26.0.0/design/overlord.html">here</a>.</p>
<h4><a class="anchor" aria-hidden="true" id="overlord-static-configuration"></a><a href="#overlord-static-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 [...]
<p>These Overlord static configurations can be defined in the <code>overlord/runtime.properties</code> file.</p>
<h5><a class="anchor" aria-hidden="true" id="overlord-process-configs"></a><a href="#overlord-process-configs" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-. [...]
@@ -1223,7 +1234,7 @@ The below is a list of the supported configurations for auto-compaction.</p>
<tr><td><code>druid.host</code></td><td>The host for the current process. This is used to advertise the current processes location as reachable from another process and should generally be specified such that <code>http://${druid.host}/</code> could actually talk to this process</td><td>InetAddress.getLocalHost().getCanonicalHostName()</td></tr>
<tr><td><code>druid.bindOnHost</code></td><td>Indicating whether the process's internal jetty server bind on <code>druid.host</code>. Default is false, which means binding to all interfaces.</td><td>false</td></tr>
<tr><td><code>druid.plaintextPort</code></td><td>This is the port to actually listen on; unless port mapping is used, this will be the same port as is on <code>druid.host</code></td><td>8090</td></tr>
-<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/latest/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>8290</td></tr>
+<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/26.0.0/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>8290</td></tr>
<tr><td><code>druid.service</code></td><td>The name of the service. This is used as a dimension when emitting metrics and alerts to differentiate between the various services</td><td>druid/overlord</td></tr>
</tbody>
</table>
@@ -1236,8 +1247,8 @@ The below is a list of the supported configurations for auto-compaction.</p>
<tr><td><code>druid.indexer.runner.type</code></td><td>Indicates whether tasks should be run locally using "local" or in a distributed environment using "remote". The recommended option is "httpRemote", which is similar to "remote" but uses HTTP to interact with Middle Managers instead of ZooKeeper.</td><td>httpRemote</td></tr>
<tr><td><code>druid.indexer.storage.type</code></td><td>Choices are "local" or "metadata". Indicates whether incoming tasks should be stored locally (in heap) or in metadata storage. "local" is mainly for internal testing while "metadata" is recommended in production because storing incoming tasks in metadata storage allows for tasks to be resumed if the Overlord should fail.</td><td>local</td></tr>
<tr><td><code>druid.indexer.storage.recentlyFinishedThreshold</code></td><td>Duration of time to store task results. Default is 24 hours. If you have hundreds of tasks running in a day, consider increasing this threshold.</td><td>PT24H</td></tr>
-<tr><td><code>druid.indexer.tasklock.forceTimeChunkLock</code></td><td><em><strong>Setting this to false is still experimental</strong></em><br/> If set, all tasks are enforced to use time chunk lock. If not set, each task automatically chooses a lock type to use. This configuration can be overwritten by setting <code>forceTimeChunkLock</code> in the <a href="/docs/latest/ingestion/tasks.html#context">task context</a>. See <a href="/docs/latest/ingestion/tasks.html#context">Task Locking [...]
-<tr><td><code>druid.indexer.tasklock.batchSegmentAllocation</code></td><td>If set to true, Druid performs segment allocate actions in batches to improve throughput and reduce the average <code>task/action/run/time</code>. See <a href="/docs/latest/ingestion/tasks.html#batching-segmentallocate-actions">batching <code>segmentAllocate</code> actions</a> for details.</td><td>false</td></tr>
+<tr><td><code>druid.indexer.tasklock.forceTimeChunkLock</code></td><td><em><strong>Setting this to false is still experimental</strong></em><br/> If set, all tasks are enforced to use time chunk lock. If not set, each task automatically chooses a lock type to use. This configuration can be overwritten by setting <code>forceTimeChunkLock</code> in the <a href="/docs/26.0.0/ingestion/tasks.html#context">task context</a>. See <a href="/docs/26.0.0/ingestion/tasks.html#context">Task Locking [...]
+<tr><td><code>druid.indexer.tasklock.batchSegmentAllocation</code></td><td>If set to true, Druid performs segment allocate actions in batches to improve throughput and reduce the average <code>task/action/run/time</code>. See <a href="/docs/26.0.0/ingestion/tasks.html#batching-segmentallocate-actions">batching <code>segmentAllocate</code> actions</a> for details.</td><td>false</td></tr>
<tr><td><code>druid.indexer.tasklock.batchAllocationWaitTime</code></td><td>Number of milliseconds after Druid adds the first segment allocate action to a batch, until it executes the batch. Allows the batch to add more requests and improve the average segment allocation run time. This configuration takes effect only if <code>batchSegmentAllocation</code> is enabled.</td><td>500</td></tr>
<tr><td><code>druid.indexer.task.default.context</code></td><td>Default task context that is applied to all tasks submitted to the Overlord. Any default in this config does not override neither the context values the user provides nor <code>druid.indexer.tasklock.forceTimeChunkLock</code>.</td><td>empty context</td></tr>
<tr><td><code>druid.indexer.queue.maxSize</code></td><td>Maximum number of active tasks at one time.</td><td>Integer.MAX_VALUE</td></tr>
@@ -1246,7 +1257,7 @@ The below is a list of the supported configurations for auto-compaction.</p>
<tr><td><code>druid.indexer.queue.storageSyncRate</code></td><td>Sync Overlord state this often with an underlying task persistence mechanism.</td><td>PT1M</td></tr>
</tbody>
</table>
-<p>The following configs only apply if the Overlord is running in remote mode. For a description of local vs. remote mode, see <a href="/docs/latest/design/overlord.html">Overlord Process</a>.</p>
+<p>The following configs only apply if the Overlord is running in remote mode. For a description of local vs. remote mode, see <a href="/docs/26.0.0/design/overlord.html">Overlord Process</a>.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
@@ -1256,7 +1267,7 @@ The below is a list of the supported configurations for auto-compaction.</p>
<tr><td><code>druid.indexer.runner.minWorkerVersion</code></td><td>The minimum MiddleManager version to send tasks to. The version number is a string. This affects the expected behavior during certain operations like comparison against <code>druid.worker.version</code>. Specifically, the version comparison follows dictionary order. Use ISO8601 date format for the version to accommodate date comparisons.</td><td>"0"</td></tr>
<tr><td><code>druid.indexer.runner.parallelIndexTaskSlotRatio</code></td><td>The ratio of task slots available for parallel indexing supervisor tasks per worker. The specified value must be in the range [0, 1].</td><td>1</td></tr>
<tr><td><code>druid.indexer.runner.compressZnodes</code></td><td>Indicates whether or not the Overlord should expect MiddleManagers to compress Znodes.</td><td>true</td></tr>
-<tr><td><code>druid.indexer.runner.maxZnodeBytes</code></td><td>The maximum size Znode in bytes that can be created in ZooKeeper, should be in the range of [10KiB, 2GiB). <a href="/docs/latest/configuration/human-readable-byte.html">Human-readable format</a> is supported.</td><td>512 KiB</td></tr>
+<tr><td><code>druid.indexer.runner.maxZnodeBytes</code></td><td>The maximum size Znode in bytes that can be created in ZooKeeper, should be in the range of [10KiB, 2GiB). <a href="/docs/26.0.0/configuration/human-readable-byte.html">Human-readable format</a> is supported.</td><td>512 KiB</td></tr>
<tr><td><code>druid.indexer.runner.taskCleanupTimeout</code></td><td>How long to wait before failing a task after a MiddleManager is disconnected from ZooKeeper.</td><td>PT15M</td></tr>
<tr><td><code>druid.indexer.runner.taskShutdownLinkTimeout</code></td><td>How long to wait on a shutdown request to a MiddleManager before timing out</td><td>PT1M</td></tr>
<tr><td><code>druid.indexer.runner.pendingTasksRunnerNumThreads</code></td><td>Number of threads to allocate pending-tasks to workers, must be at least 1.</td><td>1</td></tr>
@@ -1302,13 +1313,13 @@ The below is a list of the supported configurations for auto-compaction.</p>
<tr><td><code>druid.supervisor.idleConfig.inactiveAfterMillis</code></td><td>Supervisor is marked as idle if all existing data has been read from input topic and no new data has been published for <code>inactiveAfterMillis</code> milliseconds.</td><td><code>600_000</code></td></tr>
</tbody>
</table>
-<p>The <code>druid.supervisor.idleConfig.*</code> specified in the runtime properties of the overlord defines the default behavior for the entire cluster. See <a href="/docs/latest/development/extensions-core/kafka-supervisor-reference.html#kafkasupervisorioconfig">Idle Configuration in Kafka Supervisor IOConfig</a> to override it for an individual supervisor.</p>
-<h4><a class="anchor" aria-hidden="true" id="overlord-dynamic-configuration"></a><a href="#overlord-dynamic-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 1 [...]
-<p>The Overlord can dynamically change worker behavior.</p>
+<p>The <code>druid.supervisor.idleConfig.*</code> specified in the runtime properties of the overlord defines the default behavior for the entire cluster. See <a href="/docs/26.0.0/development/extensions-core/kafka-supervisor-reference.html#kafkasupervisorioconfig">Idle Configuration in Kafka Supervisor IOConfig</a> to override it for an individual supervisor.</p>
+<h4><a class="anchor" aria-hidden="true" id="overlord-dynamic-configuration"></a><a href="#overlord-dynamic-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 1 [...]
+<p>The Overlord can be dynamically configured to specify how tasks are assigned to workers.</p>
<p>The JSON object can be submitted to the Overlord via a POST request at:</p>
<pre><code class="hljs">http:<span class="hljs-regexp">//</span><OVERLORD_IP>:<port><span class="hljs-regexp">/druid/i</span>ndexer<span class="hljs-regexp">/v1/</span>worker
</code></pre>
-<p>Optional Header Parameters for auditing the config change can also be specified.</p>
+<p>Optional header parameters for auditing the config change can also be specified.</p>
<table>
<thead>
<tr><th>Header Param Name</th><th>Description</th><th>Default</th></tr>
@@ -1318,7 +1329,7 @@ The below is a list of the supported configurations for auto-compaction.</p>
<tr><td><code>X-Druid-Comment</code></td><td>comment describing the change being done</td><td>""</td></tr>
</tbody>
</table>
-<p>A sample worker config spec is shown below:</p>
+<p>An example Overlord dynamic config is shown below:</p>
<pre><code class="hljs css language-json">{
<span class="hljs-attr">"selectStrategy"</span>: {
<span class="hljs-attr">"type"</span>: <span class="hljs-string">"fillCapacity"</span>,
@@ -1353,50 +1364,81 @@ The below is a list of the supported configurations for auto-compaction.</p>
}
}
</code></pre>
-<p>Issuing a GET request at the same URL will return the current worker config spec that is currently in place. The worker config spec list above is just a sample for EC2 and it is possible to extend the code base for other deployment environments. A description of the worker config spec is shown below.</p>
+<p>Issuing a GET request to the same URL returns the current Overlord dynamic config.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>selectStrategy</code></td><td>How to assign tasks to MiddleManagers. Choices are <code>fillCapacity</code>, <code>equalDistribution</code>, and <code>javascript</code>.</td><td>equalDistribution</td></tr>
+<tr><td><code>selectStrategy</code></td><td>Describes how to assign tasks to MiddleManagers. The type can be <code>equalDistribution</code>, <code>equalDistributionWithCategorySpec</code>, <code>fillCapacity</code>, <code>fillCapacityWithCategorySpec</code>, and <code>javascript</code>.</td><td><code>{"type":"equalDistribution"}</code></td></tr>
<tr><td><code>autoScaler</code></td><td>Only used if autoscaling is enabled. See below.</td><td>null</td></tr>
</tbody>
</table>
<p>To view the audit history of worker config issue a GET request to the URL -</p>
<pre><code class="hljs">http://<span class="hljs-symbol"><OVERLORD_IP></span>:<span class="hljs-symbol"><port></span>/druid/indexer/v1/worker/<span class="hljs-keyword">history</span>?interval=<span class="hljs-symbol"><interval></span>
</code></pre>
-<p>default value of interval can be specified by setting <code>druid.audit.manager.auditHistoryMillis</code> (1 week if not configured) in Overlord runtime.properties.</p>
-<p>To view last <code>n</code> entries of the audit history of worker config issue a GET request to the URL -</p>
+<p>The default value of <code>interval</code> can be specified by setting <code>druid.audit.manager.auditHistoryMillis</code> (1 week if not configured) in Overlord runtime.properties.</p>
+<p>To view the last <code>n</code> entries of the audit history of worker config, issue a GET request to the following URL:</p>
<pre><code class="hljs">http://<span class="hljs-symbol"><OVERLORD_IP></span>:<span class="hljs-symbol"><port></span>/druid/indexer/v1/worker/<span class="hljs-keyword">history</span>?<span class="hljs-built_in">count</span>=<span class="hljs-symbol"><n></span>
</code></pre>
-<h5><a class="anchor" aria-hidden="true" id="worker-select-strategy"></a><a href="#worker-select-strategy" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0 [...]
-<p>Worker select strategies control how Druid assigns tasks to MiddleManagers.</p>
-<h6><a class="anchor" aria-hidden="true" id="equal-distribution"></a><a href="#equal-distribution" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22- [...]
-<p>Tasks are assigned to the MiddleManager with the most free slots at the time the task begins running. This is useful if
-you want work evenly distributed across your MiddleManagers.</p>
+<h5><a class="anchor" aria-hidden="true" id="worker-select-strategy"></a><a href="#worker-select-strategy" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0 [...]
+<p>The select strategy controls how Druid assigns tasks to workers (MiddleManagers).
+At a high level, the select strategy determines the list of eligible workers for a given task using
+either an <code>affinityConfig</code> or a <code>categorySpec</code>. Then, Druid assigns the task by either trying to distribute load equally
+(<code>equalDistribution</code>) or to fill as many workers as possible to capacity (<code>fillCapacity</code>).
+There are 4 options for select strategies:</p>
+<ul>
+<li><a href="#equaldistribution"><code>equalDistribution</code></a></li>
+<li><a href="#equaldistributionwithcategoryspec"><code>equalDistributionWithCategorySpec</code></a></li>
+<li><a href="#fillcapacity"><code>fillCapacity</code></a></li>
+<li><a href="#fillcapacitywithcategoryspec"><code>fillCapacityWithCategorySpec</code></a></li>
+</ul>
+<p>A <code>javascript</code> option is also available but should only be used for prototyping new strategies.</p>
+<p>If an <code>affinityConfig</code> is provided (as part of <code>fillCapacity</code> and <code>equalDistribution</code> strategies) for a given task, the list of workers eligible to be assigned is determined as follows:</p>
+<ul>
+<li>a non-affinity worker if no affinity is specified for that datasource. Any worker not listed in the <code>affinityConfig</code> is considered a non-affinity worker.</li>
+<li>a non-affinity worker if preferred workers are not available and the affinity is <em>weak</em> i.e. <code>strong: false</code>.</li>
+<li>a preferred worker listed in the <code>affinityConfig</code> for this datasource if it has available capacity</li>
+<li>no worker if preferred workers are not available and affinity is <em>strong</em> i.e. <code>strong: true</code>. In this case, the task remains in "pending" state. The chosen provisioning strategy (e.g. <code>pendingTaskBased</code>) may then use the total number of pending tasks to determine if a new node should be provisioned.</li>
+</ul>
+<p>Note that every worker listed in the <code>affinityConfig</code> will only be used for the assigned datasources and no other.</p>
+<p>If a <code>categorySpec</code> is provided (as part of <code>fillCapacityWithCategorySpec</code> and <code>equalDistributionWithCategorySpec</code> strategies), then a task of a given datasource may be assigned to:</p>
+<ul>
+<li>any worker if no category config is given for task type</li>
+<li>any worker if category config is given for task type but no category is given for datasource and there's no default category</li>
+<li>a preferred worker (based on category config and category for datasource) if available</li>
+<li>any worker if category config and category are given but no preferred worker is available and category config is <code>weak</code></li>
+<li>not assigned at all if preferred workers are not available and category config is <code>strong</code></li>
+</ul>
+<p>In both the cases, Druid determines the list of eligible workers and selects one depending on their load with the goal of either distributing the load equally or filling as few workers as possible.</p>
+<p>If you are using auto-scaling, use the <code>fillCapacity</code> select strategy since auto-scaled nodes can
+not be assigned a category, and you want the work to be concentrated on the fewest number of workers to allow the empty ones to scale down.</p>
+<h6><a class="anchor" aria-hidden="true" id="equaldistribution"></a><a href="#equaldistribution" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2- [...]
+<p>Tasks are assigned to the MiddleManager with the most free slots at the time the task begins running.
+This evenly distributes work across your MiddleManagers.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>type</code></td><td><code>equalDistribution</code>.</td><td>required; must be <code>equalDistribution</code></td></tr>
-<tr><td><code>affinityConfig</code></td><td><a href="#affinity">Affinity config</a> object</td><td>null (no affinity)</td></tr>
+<tr><td><code>type</code></td><td><code>equalDistribution</code></td><td>required; must be <code>equalDistribution</code></td></tr>
+<tr><td><code>affinityConfig</code></td><td><a href="#affinityconfig"><code>AffinityConfig</code></a> object</td><td>null (no affinity)</td></tr>
</tbody>
</table>
-<h6><a class="anchor" aria-hidden="true" id="equal-distribution-with-category-spec"></a><a href="#equal-distribution-with-category-spec" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 [...]
-<p>This strategy is a variant of <code>Equal Distribution</code>, which support <code>workerCategorySpec</code> field rather than <code>affinityConfig</code>. By specifying <code>workerCategorySpec</code>, you can assign tasks to run on different categories of MiddleManagers based on the tasks' <strong>taskType</strong> and <strong>dataSource name</strong>. This strategy can't work with <code>AutoScaler</code> since the behavior is undefined.</p>
+<h6><a class="anchor" aria-hidden="true" id="equaldistributionwithcategoryspec"></a><a href="#equaldistributionwithcategoryspec" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S1 [...]
+<p>This strategy is a variant of <code>equalDistribution</code>, which supports <code>workerCategorySpec</code> field rather than <code>affinityConfig</code>.
+By specifying <code>workerCategorySpec</code>, you can assign tasks to run on different categories of MiddleManagers based on the <strong>type</strong> and <strong>dataSource</strong> of the task.
+This strategy doesn't work with <code>AutoScaler</code> since the behavior is undefined.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>type</code></td><td><code>equalDistributionWithCategorySpec</code>.</td><td>required; must be <code>equalDistributionWithCategorySpec</code></td></tr>
-<tr><td><code>workerCategorySpec</code></td><td><a href="#workercategoryspec">Worker Category Spec</a> object</td><td>null (no worker category spec)</td></tr>
+<tr><td><code>type</code></td><td><code>equalDistributionWithCategorySpec</code></td><td>required; must be <code>equalDistributionWithCategorySpec</code></td></tr>
+<tr><td><code>workerCategorySpec</code></td><td><a href="#workercategoryspec"><code>WorkerCategorySpec</code></a> object</td><td>null (no worker category spec)</td></tr>
</tbody>
</table>
-<p>Example: specify tasks default to run on <strong>c1</strong> whose task
-type is "index_kafka", while dataSource "ds1" run on <strong>c2</strong>.</p>
+<p>Example: tasks of type "index_kafka" default to running on MiddleManagers of category <code>c1</code>, except for tasks that write to datasource "ds1," which run on MiddleManagers of category <code>c2</code>.</p>
<pre><code class="hljs css language-json">{
<span class="hljs-attr">"selectStrategy"</span>: {
<span class="hljs-attr">"type"</span>: <span class="hljs-string">"equalDistributionWithCategorySpec"</span>,
@@ -1404,19 +1446,19 @@ type is "index_kafka", while dataSource "ds1" run on <strong
<span class="hljs-attr">"strong"</span>: <span class="hljs-literal">false</span>,
<span class="hljs-attr">"categoryMap"</span>: {
<span class="hljs-attr">"index_kafka"</span>: {
- <span class="hljs-attr">"defaultCategory"</span>: <span class="hljs-string">"c1"</span>,
- <span class="hljs-attr">"categoryAffinity"</span>: {
- <span class="hljs-attr">"ds1"</span>: <span class="hljs-string">"c2"</span>
- }
+ <span class="hljs-attr">"defaultCategory"</span>: <span class="hljs-string">"c1"</span>,
+ <span class="hljs-attr">"categoryAffinity"</span>: {
+ <span class="hljs-attr">"ds1"</span>: <span class="hljs-string">"c2"</span>
+ }
}
}
}
}
}
</code></pre>
-<h6><a class="anchor" aria-hidden="true" id="fill-capacity"></a><a href="#fill-capacity" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
-<p>Tasks are assigned to the worker with the most currently-running tasks at the time the task begins running. This is
-useful in situations where you are elastically auto-scaling MiddleManagers, since it will tend to pack some full and
+<h6><a class="anchor" aria-hidden="true" id="fillcapacity"></a><a href="#fillcapacity" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
+<p>Tasks are assigned to the worker with the most currently-running tasks. This is
+useful when you are auto-scaling MiddleManagers since it tends to pack some full and
leave others empty. The empty ones can be safely terminated.</p>
<p>Note that if <code>druid.indexer.runner.pendingTasksRunnerNumThreads</code> is set to <em>N</em> > 1, then this strategy will fill <em>N</em>
MiddleManagers up to capacity simultaneously, rather than a single MiddleManager.</p>
@@ -1425,26 +1467,25 @@ MiddleManagers up to capacity simultaneously, rather than a single MiddleManager
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>type</code></td><td><code>fillCapacity</code>.</td><td>required; must be <code>fillCapacity</code></td></tr>
-<tr><td><code>affinityConfig</code></td><td><a href="#affinity">Affinity config</a> object</td><td>null (no affinity)</td></tr>
+<tr><td><code>type</code></td><td><code>fillCapacity</code></td><td>required; must be <code>fillCapacity</code></td></tr>
+<tr><td><code>affinityConfig</code></td><td><a href="#affinityconfig"><code>AffinityConfig</code></a> object</td><td>null (no affinity)</td></tr>
</tbody>
</table>
-<h6><a class="anchor" aria-hidden="true" id="fill-capacity-with-category-spec"></a><a href="#fill-capacity-with-category-spec" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13. [...]
-<p>This strategy is a variant of <code>Fill Capacity</code>, which support <code>workerCategorySpec</code> field rather than <code>affinityConfig</code>. The usage is the same with <em>equalDistributionWithCategorySpec</em> strategy. This strategy can't work with <code>AutoScaler</code> since the behavior is undefined.</p>
+<h6><a class="anchor" aria-hidden="true" id="fillcapacitywithcategoryspec"></a><a href="#fillcapacitywithcategoryspec" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 [...]
+<p>This strategy is a variant of <code>fillCapacity</code>, which supports <code>workerCategorySpec</code> instead of an <code>affinityConfig</code>.
+The usage is the same as <code>equalDistributionWithCategorySpec</code> strategy.
+This strategy doesn't work with <code>AutoScaler</code> since the behavior is undefined.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
<tr><td><code>type</code></td><td><code>fillCapacityWithCategorySpec</code>.</td><td>required; must be <code>fillCapacityWithCategorySpec</code></td></tr>
-<tr><td><code>workerCategorySpec</code></td><td><a href="#workercategoryspec">Worker Category Spec</a> object</td><td>null (no worker category spec)</td></tr>
+<tr><td><code>workerCategorySpec</code></td><td><a href="#workercategoryspec"><code>WorkerCategorySpec</code></a> object</td><td>null (no worker category spec)</td></tr>
</tbody>
</table>
-<blockquote>
-<p>Before using the <em>equalDistributionWithCategorySpec</em> and <em>fillCapacityWithCategorySpec</em> strategies, you must upgrade overlord and all MiddleManagers to the version that support this feature.</p>
-</blockquote>
<p><a name="javascript-worker-select-strategy"></a></p>
-<h6><a class="anchor" aria-hidden="true" id="javascript-1"></a><a href="#javascript-1" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
+<h6><a class="anchor" aria-hidden="true" id="javascript-1"></a><a href="#javascript-1" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
<p>Allows defining arbitrary logic for selecting workers to run task using a JavaScript function.
The function is passed remoteTaskRunnerConfig, map of workerId to available workers and task to be executed and returns the workerId on which the task should be run or null if the task cannot be run.
It can be used for rapid development of missing features where the worker selection logic is to be changed or tuned often.
@@ -1455,32 +1496,33 @@ its better to write a druid extension module with extending current worker selec
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>type</code></td><td><code>javascript</code>.</td><td>required; must be <code>javascript</code></td></tr>
+<tr><td><code>type</code></td><td><code>javascript</code></td><td>required; must be <code>javascript</code></td></tr>
<tr><td><code>function</code></td><td>String representing JavaScript function</td><td></td></tr>
</tbody>
</table>
<p>Example: a function that sends batch_index_task to workers 10.0.0.1 and 10.0.0.2 and all other tasks to other available workers.</p>
<pre><code class="hljs">{
-"type":"javascript",
-"function":"function (config, zkWorkers, task) {<span class="hljs-symbol">\n</span>var batch_workers = new java.util.ArrayList();<span class="hljs-symbol">\n</span>batch_workers.add(<span class="hljs-symbol">\"</span>middleManager1_hostname:8091<span class="hljs-symbol">\"</span>);<span class="hljs-symbol">\n</span>batch_workers.add(<span class="hljs-symbol">\"</span>middleManager2_hostname:8091<span class="hljs-symbol">\"</span>);<span class="hljs-symbol">\n</span>workers = zkWorkers.ke [...]
+ "type":"javascript",
+ "function":"function (config, zkWorkers, task) {<span class="hljs-symbol">\n</span>var batch_workers = new java.util.ArrayList();<span class="hljs-symbol">\n</span>batch_workers.add(<span class="hljs-symbol">\"</span>middleManager1_hostname:8091<span class="hljs-symbol">\"</span>);<span class="hljs-symbol">\n</span>batch_workers.add(<span class="hljs-symbol">\"</span>middleManager2_hostname:8091<span class="hljs-symbol">\"</span>);<span class="hljs-symbol">\n</span>workers = zkWorkers. [...]
}
</code></pre>
<blockquote>
-<p>JavaScript-based functionality is disabled by default. Please refer to the Druid <a href="/docs/latest/development/javascript.html">JavaScript programming guide</a> for guidelines about using Druid's JavaScript functionality, including instructions on how to enable it.</p>
+<p>JavaScript-based functionality is disabled by default. Please refer to the Druid <a href="/docs/26.0.0/development/javascript.html">JavaScript programming guide</a> for guidelines about using Druid's JavaScript functionality, including instructions on how to enable it.</p>
</blockquote>
-<h6><a class="anchor" aria-hidden="true" id="affinity"></a><a href="#affinity" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 [...]
-<p>Use the <code>affinityConfig</code> field to pass affinity configuration to the <em>equalDistribution</em> and <em>fillCapacity</em> strategies. If not provided, the default is to not use affinity at all.</p>
+<h6><a class="anchor" aria-hidden="true" id="affinityconfig"></a><a href="#affinityconfig" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
+<p>Use the <code>affinityConfig</code> field to pass affinity configuration to the <code>equalDistribution</code> and <code>fillCapacity</code> strategies.
+If not provided, the default is to have no affinity.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>affinity</code></td><td>JSON object mapping a datasource String name to a list of indexing service MiddleManager host:port String values. Druid doesn't perform DNS resolution, so the 'host' value must match what is configured on the MiddleManager and what the MiddleManager announces itself as (examine the Overlord logs to see what your MiddleManager announces itself as).</td><td>{}</td></tr>
+<tr><td><code>affinity</code></td><td>JSON object mapping a datasource String name to a list of indexing service MiddleManager <code>host:port</code> values. Druid doesn't perform DNS resolution, so the 'host' value must match what is configured on the MiddleManager and what the MiddleManager announces itself as (examine the Overlord logs to see what your MiddleManager announces itself as).</td><td>{}</td></tr>
<tr><td><code>strong</code></td><td>When <code>true</code> tasks for a datasource must be assigned to affinity-mapped MiddleManagers. Tasks remain queued until a slot becomes available. When <code>false</code>, Druid may assign tasks for a datasource to other MiddleManagers when affinity-mapped MiddleManagers are unavailable to run queued tasks.</td><td>false</td></tr>
</tbody>
</table>
-<h6><a class="anchor" aria-hidden="true" id="workercategoryspec"></a><a href="#workercategoryspec" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22- [...]
-<p>WorkerCategorySpec can be provided to the <em>equalDistributionWithCategorySpec</em> and <em>fillCapacityWithCategorySpec</em> strategies using the "workerCategorySpec"
+<h6><a class="anchor" aria-hidden="true" id="workercategoryspec"></a><a href="#workercategoryspec" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22- [...]
+<p>WorkerCategorySpec can be provided to the <code>equalDistributionWithCategorySpec</code> and <code>fillCapacityWithCategorySpec</code> strategies using the <code>workerCategorySpec</code>
field. If not provided, the default is to not use it at all.</p>
<table>
<thead>
@@ -1509,17 +1551,18 @@ field. If not provided, the default is to not use it at all.</p>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
+<tr><td><code>type</code></td><td><code>ec2</code></td><td>0</td></tr>
<tr><td><code>minNumWorkers</code></td><td>The minimum number of workers that can be in the cluster at any given time.</td><td>0</td></tr>
<tr><td><code>maxNumWorkers</code></td><td>The maximum number of workers that can be in the cluster at any given time.</td><td>0</td></tr>
-<tr><td><code>availabilityZone</code></td><td>What availability zone to run in.</td><td>none</td></tr>
-<tr><td><code>nodeData</code></td><td>A JSON object that describes how to launch new nodes.</td><td>none; required</td></tr>
-<tr><td><code>userData</code></td><td>A JSON object that describes how to configure new nodes. If you have set druid.indexer.autoscale.workerVersion, this must have a versionReplacementString. Otherwise, a versionReplacementString is not necessary.</td><td>none; optional</td></tr>
+<tr><td><code>envConfig.availabilityZone</code></td><td>What Amazon availability zone to run in.</td><td>none</td></tr>
+<tr><td><code>envConfig.nodeData</code></td><td>A JSON object that describes how to launch new nodes.</td><td>none; required</td></tr>
+<tr><td><code>envConfig.userData</code></td><td>A JSON object that describes how to configure new nodes. If you have set druid.indexer.autoscale.workerVersion, this must have a versionReplacementString. Otherwise, a versionReplacementString is not necessary.</td><td>none; optional</td></tr>
</tbody>
</table>
-<p>For GCE's properties, please refer to the <a href="/docs/latest/development/extensions-contrib/gce-extensions.html">gce-extensions</a>.</p>
+<p>For GCE's properties, please refer to the <a href="/docs/26.0.0/development/extensions-contrib/gce-extensions.html">gce-extensions</a>.</p>
<h2><a class="anchor" aria-hidden="true" id="data-server"></a><a href="#data-server" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42 [...]
-<p>This section contains the configuration options for the processes that reside on Data servers (MiddleManagers/Peons and Historicals) in the suggested <a href="/docs/latest/design/processes.html#server-types">three-server configuration</a>.</p>
-<p>Configuration options for the <a href="/docs/latest/design/indexer.html">Indexer process</a> are also provided here.</p>
+<p>This section contains the configuration options for the processes that reside on Data servers (MiddleManagers/Peons and Historicals) in the suggested <a href="/docs/26.0.0/design/processes.html#server-types">three-server configuration</a>.</p>
+<p>Configuration options for the <a href="/docs/26.0.0/design/indexer.html">Indexer process</a> are also provided here.</p>
<h3><a class="anchor" aria-hidden="true" id="middlemanager-and-peons"></a><a href="#middlemanager-and-peons" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 [...]
<p>These MiddleManager and Peon configurations can be defined in the <code>middleManager/runtime.properties</code> file.</p>
<h4><a class="anchor" aria-hidden="true" id="middlemanager-process-config"></a><a href="#middlemanager-process-config" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 [...]
@@ -1531,7 +1574,7 @@ field. If not provided, the default is to not use it at all.</p>
<tr><td><code>druid.host</code></td><td>The host for the current process. This is used to advertise the current processes location as reachable from another process and should generally be specified such that <code>http://${druid.host}/</code> could actually talk to this process</td><td>InetAddress.getLocalHost().getCanonicalHostName()</td></tr>
<tr><td><code>druid.bindOnHost</code></td><td>Indicating whether the process's internal jetty server bind on <code>druid.host</code>. Default is false, which means binding to all interfaces.</td><td>false</td></tr>
<tr><td><code>druid.plaintextPort</code></td><td>This is the port to actually listen on; unless port mapping is used, this will be the same port as is on <code>druid.host</code></td><td>8091</td></tr>
-<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/latest/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>8291</td></tr>
+<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/26.0.0/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>8291</td></tr>
<tr><td><code>druid.service</code></td><td>The name of the service. This is used as a dimension when emitting metrics and alerts to differentiate between the various services</td><td>druid/middlemanager</td></tr>
</tbody>
</table>
@@ -1548,13 +1591,14 @@ field. If not provided, the default is to not use it at all.</p>
<tr><td><code>druid.indexer.runner.javaCommand</code></td><td>Command required to execute java.</td><td>java</td></tr>
<tr><td><code>druid.indexer.runner.javaOpts</code></td><td><em>DEPRECATED</em> A string of -X Java options to pass to the peon's JVM. Quotable parameters or parameters with spaces are encouraged to use javaOptsArray</td><td>""</td></tr>
<tr><td><code>druid.indexer.runner.javaOptsArray</code></td><td>A JSON array of strings to be passed in as options to the peon's JVM. This is additive to <code>druid.indexer.runner.javaOpts</code> and is recommended for properly handling arguments which contain quotes or spaces like <code>["-XX:OnOutOfMemoryError=kill -9 %p"]</code></td><td><code>[]</code></td></tr>
-<tr><td><code>druid.indexer.runner.maxZnodeBytes</code></td><td>The maximum size Znode in bytes that can be created in ZooKeeper, should be in the range of [10KiB, 2GiB). <a href="/docs/latest/configuration/human-readable-byte.html">Human-readable format</a> is supported.</td><td>512KiB</td></tr>
+<tr><td><code>druid.indexer.runner.maxZnodeBytes</code></td><td>The maximum size Znode in bytes that can be created in ZooKeeper, should be in the range of [10KiB, 2GiB). <a href="/docs/26.0.0/configuration/human-readable-byte.html">Human-readable format</a> is supported.</td><td>512KiB</td></tr>
<tr><td><code>druid.indexer.runner.startPort</code></td><td>Starting port used for peon processes, should be greater than 1023 and less than 65536.</td><td>8100</td></tr>
<tr><td><code>druid.indexer.runner.endPort</code></td><td>Ending port used for peon processes, should be greater than or equal to <code>druid.indexer.runner.startPort</code> and less than 65536.</td><td>65535</td></tr>
<tr><td><code>druid.indexer.runner.ports</code></td><td>A JSON array of integers to specify ports that used for peon processes. If provided and non-empty, ports for peon processes will be chosen from these ports. And <code>druid.indexer.runner.startPort/druid.indexer.runner.endPort</code> will be completely ignored.</td><td><code>[]</code></td></tr>
<tr><td><code>druid.worker.ip</code></td><td>The IP of the worker.</td><td>localhost</td></tr>
<tr><td><code>druid.worker.version</code></td><td>Version identifier for the MiddleManager. The version number is a string. This affects the expected behavior during certain operations like comparison against <code>druid.indexer.runner.minWorkerVersion</code>. Specifically, the version comparison follows dictionary order. Use ISO8601 date format for the version to accommodate date comparisons.</td><td>0</td></tr>
<tr><td><code>druid.worker.capacity</code></td><td>Maximum number of tasks the MiddleManager can accept.</td><td>Number of CPUs on the machine - 1</td></tr>
+<tr><td><code>druid.worker.baseTaskDirs</code></td><td>List of base temporary working directories, one of which is assigned per task in a round-robin fashion. This property can be used to allow usage of multiple disks for indexing. This property is recommended in place of and takes precedence over <code>${druid.indexer.task.baseTaskDir}</code>. If this configuration is not set, <code>${druid.indexer.task.baseTaskDir}</code> is used. Example: <code>druid.worker.baseTaskDirs=[\"PATH [...]
<tr><td><code>druid.worker.category</code></td><td>A string to name the category that the MiddleManager node belongs to.</td><td><code>_default_worker_category</code></td></tr>
</tbody>
</table>
@@ -1565,7 +1609,7 @@ field. If not provided, the default is to not use it at all.</p>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>druid.processing.buffer.sizeBytes</code></td><td>This specifies a buffer size (less than 2GiB) for the storage of intermediate results. The computation engine in both the Historical and Realtime processes will use a scratch buffer of this size to do all of their intermediate computations off-heap. Larger values allow for more aggregations in a single pass over the data while smaller values can require more passes depending on the query that is being executed. <a href="/docs [...]
+<tr><td><code>druid.processing.buffer.sizeBytes</code></td><td>This specifies a buffer size (less than 2GiB) for the storage of intermediate results. The computation engine in both the Historical and Realtime processes will use a scratch buffer of this size to do all of their intermediate computations off-heap. Larger values allow for more aggregations in a single pass over the data while smaller values can require more passes depending on the query that is being executed. <a href="/docs [...]
<tr><td><code>druid.processing.buffer.poolCacheMaxCount</code></td><td>processing buffer pool caches the buffers for later use, this is the maximum count cache will grow to. note that pool can create more buffers than it can cache if necessary.</td><td>Integer.MAX_VALUE</td></tr>
<tr><td><code>druid.processing.formatString</code></td><td>Realtime and Historical processes use this format string to name their processing threads.</td><td>processing-%s</td></tr>
<tr><td><code>druid.processing.numMergeBuffers</code></td><td>The number of direct memory buffers available for merging query results. The buffers are sized by <code>druid.processing.buffer.sizeBytes</code>. This property is effectively a concurrency limit for queries that require merging buffers. If you are using any queries that require merge buffers (currently, just groupBy v2) then you should have at least two of these.</td><td><code>max(2, druid.processing.numThreads / 4)</code></td></tr>
@@ -1616,8 +1660,9 @@ ensure at least this amount of direct memory is available by providing <code>-XX
<tr><td><code>druid.indexer.task.gracefulShutdownTimeout</code></td><td>Wait this long on middleManager restart for restorable tasks to gracefully exit.</td><td>PT5M</td></tr>
<tr><td><code>druid.indexer.task.hadoopWorkingPath</code></td><td>Temporary working directory for Hadoop tasks.</td><td><code>/tmp/druid-indexing</code></td></tr>
<tr><td><code>druid.indexer.task.restoreTasksOnRestart</code></td><td>If true, MiddleManagers will attempt to stop tasks gracefully on shutdown and restore them on restart.</td><td>false</td></tr>
-<tr><td><code>druid.indexer.task.ignoreTimestampSpecForDruidInputSource</code></td><td>If true, tasks using the <a href="/docs/latest/ingestion/native-batch-input-sources.html">Druid input source</a> will ignore the provided timestampSpec, and will use the <code>__time</code> column of the input datasource. This option is provided for compatibility with ingestion specs written before Druid 0.22.0.</td><td>false</td></tr>
-<tr><td><code>druid.indexer.task.storeEmptyColumns</code></td><td>Boolean value for whether or not to store empty columns during ingestion. When set to true, Druid stores every column specified in the <a href="/docs/latest/ingestion/ingestion-spec.html#dimensionsspec"><code>dimensionsSpec</code></a>. If you use schemaless ingestion and don't specify any dimensions to ingest, you must also set <a href="/docs/latest/ingestion/ingestion-spec.html#dimensionsspec"><code>includeAllDimensions</ [...]
+<tr><td><code>druid.indexer.task.ignoreTimestampSpecForDruidInputSource</code></td><td>If true, tasks using the <a href="/docs/26.0.0/ingestion/native-batch-input-sources.html">Druid input source</a> will ignore the provided timestampSpec, and will use the <code>__time</code> column of the input datasource. This option is provided for compatibility with ingestion specs written before Druid 0.22.0.</td><td>false</td></tr>
+<tr><td><code>druid.indexer.task.storeEmptyColumns</code></td><td>Boolean value for whether or not to store empty columns during ingestion. When set to true, Druid stores every column specified in the <a href="/docs/26.0.0/ingestion/ingestion-spec.html#dimensionsspec"><code>dimensionsSpec</code></a>. If you use schemaless ingestion and don't specify any dimensions to ingest, you must also set <a href="/docs/26.0.0/ingestion/ingestion-spec.html#dimensionsspec"><code>includeAllDimensions</ [...]
+<tr><td><code>druid.indexer.task.tmpStorageBytesPerTask</code></td><td>Maximum number of bytes per task to be used to store temporary files on disk. This usage is split among all temporary storage usages for the task. An exception might be thrown if this limit is too low for the task or if this limit would be exceeded. This limit is currently respected only by MSQ tasks. Other types of tasks might exceed this limit. A value of -1 disables this limit.</td><td>-1</td></tr>
<tr><td><code>druid.indexer.server.maxChatRequests</code></td><td>Maximum number of concurrent requests served by a task's chat handler. Set to 0 to disable limiting.</td><td>0</td></tr>
</tbody>
</table>
@@ -1635,7 +1680,7 @@ ensure at least this amount of direct memory is available by providing <code>-XX
<h5><a class="anchor" aria-hidden="true" id="segmentwriteoutmediumfactory"></a><a href="#segmentwriteoutmediumfactory" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 [...]
<p>When new segments are created, Druid temporarily stores some preprocessed data in some buffers. Currently three types of
<em>medium</em> exist for those buffers: <em>temporary files</em>, <em>off-heap memory</em>, and <em>on-heap memory</em>.</p>
-<p><em>Temporary files</em> (<code>tmpFile</code>) are stored under the task working directory (see <code>druid.indexer.task.baseTaskDir</code>
+<p><em>Temporary files</em> (<code>tmpFile</code>) are stored under the task working directory (see <code>druid.worker.baseTaskDirs</code>
configuration above) and thus share it's mounting properties, e. g. they could be backed by HDD, SSD or memory (tmpfs).
This type of medium may do unnecessary disk I/O and requires some disk space to be available.</p>
<p><em>Off-heap memory medium</em> (<code>offHeapMemory</code>) creates buffers in off-heap memory of a JVM process that is running a task.
@@ -1647,7 +1692,7 @@ than the configured maximum <em>heap</em> size (<code>-Xmx</code>) for the same
Using on-heap memory introduces garbage collection overhead and so is not recommended in most cases. This type of medium is
most helpful for tasks run on external clusters where it may be difficult to allocate and work with direct memory
effectively.</p>
-<p>For most types of tasks SegmentWriteOutMediumFactory could be configured per-task (see <a href="/docs/latest/ingestion/tasks.html">Tasks</a>
+<p>For most types of tasks SegmentWriteOutMediumFactory could be configured per-task (see <a href="/docs/26.0.0/ingestion/tasks.html">Tasks</a>
page, "TuningConfig" section), but if it's not specified for a task, or it's not supported for a particular task type,
then the value from the configuration below is used:</p>
<table>
@@ -1668,7 +1713,7 @@ then the value from the configuration below is used:</p>
<tr><td><code>druid.host</code></td><td>The host for the current process. This is used to advertise the current processes location as reachable from another process and should generally be specified such that <code>http://${druid.host}/</code> could actually talk to this process</td><td>InetAddress.getLocalHost().getCanonicalHostName()</td></tr>
<tr><td><code>druid.bindOnHost</code></td><td>Indicating whether the process's internal jetty server bind on <code>druid.host</code>. Default is false, which means binding to all interfaces.</td><td>false</td></tr>
<tr><td><code>druid.plaintextPort</code></td><td>This is the port to actually listen on; unless port mapping is used, this will be the same port as is on <code>druid.host</code></td><td>8091</td></tr>
-<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/latest/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>8283</td></tr>
+<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/26.0.0/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>8283</td></tr>
<tr><td><code>druid.service</code></td><td>The name of the service. This is used as a dimension when emitting metrics and alerts to differentiate between the various services</td><td>druid/indexer</td></tr>
</tbody>
</table>
@@ -1680,6 +1725,7 @@ then the value from the configuration below is used:</p>
<tbody>
<tr><td><code>druid.worker.version</code></td><td>Version identifier for the Indexer.</td><td>0</td></tr>
<tr><td><code>druid.worker.capacity</code></td><td>Maximum number of tasks the Indexer can accept.</td><td>Number of available processors - 1</td></tr>
+<tr><td><code>druid.worker.baseTaskDirs</code></td><td>List of base temporary working directories, one of which is assigned per task in a round-robin fashion. This property can be used to allow usage of multiple disks for indexing. This property is recommended in place of and takes precedence over <code>${druid.indexer.task.baseTaskDir}</code>. If this configuration is not set, <code>${druid.indexer.task.baseTaskDir}</code> is used. Example: <code>druid.worker.baseTaskDirs=[\"PATH [...]
<tr><td><code>druid.worker.globalIngestionHeapLimitBytes</code></td><td>Total amount of heap available for ingestion processing. This is applied by automatically setting the <code>maxBytesInMemory</code> property on tasks.</td><td>60% of configured JVM heap</td></tr>
<tr><td><code>druid.worker.numConcurrentMerges</code></td><td>Maximum number of segment persist or merge operations that can run concurrently across all tasks.</td><td><code>druid.worker.capacity</code> / 2, rounded down</td></tr>
<tr><td><code>druid.indexer.task.baseDir</code></td><td>Base temporary working directory.</td><td><code>System.getProperty("java.io.tmpdir")</code></td></tr>
@@ -1688,8 +1734,8 @@ then the value from the configuration below is used:</p>
<tr><td><code>druid.indexer.task.gracefulShutdownTimeout</code></td><td>Wait this long on Indexer restart for restorable tasks to gracefully exit.</td><td>PT5M</td></tr>
<tr><td><code>druid.indexer.task.hadoopWorkingPath</code></td><td>Temporary working directory for Hadoop tasks.</td><td><code>/tmp/druid-indexing</code></td></tr>
<tr><td><code>druid.indexer.task.restoreTasksOnRestart</code></td><td>If true, the Indexer will attempt to stop tasks gracefully on shutdown and restore them on restart.</td><td>false</td></tr>
-<tr><td><code>druid.indexer.task.ignoreTimestampSpecForDruidInputSource</code></td><td>If true, tasks using the <a href="/docs/latest/ingestion/native-batch-input-sources.html">Druid input source</a> will ignore the provided timestampSpec, and will use the <code>__time</code> column of the input datasource. This option is provided for compatibility with ingestion specs written before Druid 0.22.0.</td><td>false</td></tr>
-<tr><td><code>druid.indexer.task.storeEmptyColumns</code></td><td>Boolean value for whether or not to store empty columns during ingestion. When set to true, Druid stores every column specified in the <a href="/docs/latest/ingestion/ingestion-spec.html#dimensionsspec"><code>dimensionsSpec</code></a>. If you use schemaless ingestion and don't specify any dimensions to ingest, you must also set <a href="/docs/latest/ingestion/ingestion-spec.html#dimensionsspec"><code>includeAllDimensions</ [...]
+<tr><td><code>druid.indexer.task.ignoreTimestampSpecForDruidInputSource</code></td><td>If true, tasks using the <a href="/docs/26.0.0/ingestion/native-batch-input-sources.html">Druid input source</a> will ignore the provided timestampSpec, and will use the <code>__time</code> column of the input datasource. This option is provided for compatibility with ingestion specs written before Druid 0.22.0.</td><td>false</td></tr>
+<tr><td><code>druid.indexer.task.storeEmptyColumns</code></td><td>Boolean value for whether or not to store empty columns during ingestion. When set to true, Druid stores every column specified in the <a href="/docs/26.0.0/ingestion/ingestion-spec.html#dimensionsspec"><code>dimensionsSpec</code></a>. If you use schemaless ingestion and don't specify any dimensions to ingest, you must also set <a href="/docs/26.0.0/ingestion/ingestion-spec.html#dimensionsspec"><code>includeAllDimensions</ [...]
<tr><td><code>druid.peon.taskActionClient.retry.minWait</code></td><td>The minimum retry time to communicate with Overlord.</td><td>PT5S</td></tr>
<tr><td><code>druid.peon.taskActionClient.retry.maxWait</code></td><td>The maximum retry time to communicate with Overlord.</td><td>PT1M</td></tr>
<tr><td><code>druid.peon.taskActionClient.retry.maxRetryCount</code></td><td>The maximum number of retries to communicate with Overlord.</td><td>60</td></tr>
@@ -1702,14 +1748,14 @@ then the value from the configuration below is used:</p>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>druid.server.http.numThreads</code></td><td>Number of threads for HTTP requests. Please see the <a href="/docs/latest/design/indexer.html#server-http-threads">Indexer Server HTTP threads</a> documentation for more details on how the Indexer uses this configuration.</td><td>max(10, (Number of cores * 17) / 16 + 2) + 30</td></tr>
+<tr><td><code>druid.server.http.numThreads</code></td><td>Number of threads for HTTP requests. Please see the <a href="/docs/26.0.0/design/indexer.html#server-http-threads">Indexer Server HTTP threads</a> documentation for more details on how the Indexer uses this configuration.</td><td>max(10, (Number of cores * 17) / 16 + 2) + 30</td></tr>
<tr><td><code>druid.server.http.queueSize</code></td><td>Size of the worker queue used by Jetty server to temporarily store incoming client connections. If this value is set and a request is rejected by jetty because queue is full then client would observe request failure with TCP connection being closed immediately with a completely empty response from server.</td><td>Unbounded</td></tr>
<tr><td><code>druid.server.http.maxIdleTime</code></td><td>The Jetty max idle time for a connection.</td><td>PT5M</td></tr>
<tr><td><code>druid.server.http.enableRequestLimit</code></td><td>If enabled, no requests would be queued in jetty queue and "HTTP 429 Too Many Requests" error response would be sent.</td><td>false</td></tr>
<tr><td><code>druid.server.http.defaultQueryTimeout</code></td><td>Query timeout in millis, beyond which unfinished queries will be cancelled</td><td>300000</td></tr>
<tr><td><code>druid.server.http.gracefulShutdownTimeout</code></td><td>The maximum amount of time Jetty waits after receiving shutdown signal. After this timeout the threads will be forcefully shutdown. This allows any queries that are executing to complete(Only values greater than zero are valid).</td><td><code>PT30S</code></td></tr>
<tr><td><code>druid.server.http.unannouncePropagationDelay</code></td><td>How long to wait for ZooKeeper unannouncements to propagate before shutting down Jetty. This is a minimum and <code>druid.server.http.gracefulShutdownTimeout</code> does not start counting down until after this period elapses.</td><td><code>PT0S</code> (do not wait)</td></tr>
-<tr><td><code>druid.server.http.maxQueryTimeout</code></td><td>Maximum allowed value (in milliseconds) for <code>timeout</code> parameter. See <a href="/docs/latest/querying/query-context.html">query-context</a> to know more about <code>timeout</code>. Query is rejected if the query context <code>timeout</code> is greater than this value.</td><td>Long.MAX_VALUE</td></tr>
+<tr><td><code>druid.server.http.maxQueryTimeout</code></td><td>Maximum allowed value (in milliseconds) for <code>timeout</code> parameter. See <a href="/docs/26.0.0/querying/query-context.html">query-context</a> to know more about <code>timeout</code>. Query is rejected if the query context <code>timeout</code> is greater than this value.</td><td>Long.MAX_VALUE</td></tr>
<tr><td><code>druid.server.http.maxRequestHeaderSize</code></td><td>Maximum size of a request header in bytes. Larger headers consume more memory and can make a server more vulnerable to denial of service attacks.</td><td>8 * 1024</td></tr>
<tr><td><code>druid.server.http.enableForwardedRequestCustomizer</code></td><td>If enabled, adds Jetty ForwardedRequestCustomizer which reads X-Forwarded-* request headers to manipulate servlet request object when Druid is used behind a proxy.</td><td>false</td></tr>
<tr><td><code>druid.server.http.allowedHttpMethods</code></td><td>List of HTTP methods that should be allowed in addition to the ones required by Druid APIs. Druid APIs require GET, PUT, POST, and DELETE, which are always allowed. This option is not useful unless you have installed an extension that needs these additional HTTP methods or that adds functionality related to CORS. None of Druid's bundled extensions require these methods.</td><td>[]</td></tr>
@@ -1722,7 +1768,7 @@ then the value from the configuration below is used:</p>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>druid.processing.buffer.sizeBytes</code></td><td>This specifies a buffer size (less than 2GiB) for the storage of intermediate results. The computation engine in the Indexer processes will use a scratch buffer of this size to do all of their intermediate computations off-heap. Larger values allow for more aggregations in a single pass over the data while smaller values can require more passes depending on the query that is being executed. <a href="/docs/latest/configuration [...]
+<tr><td><code>druid.processing.buffer.sizeBytes</code></td><td>This specifies a buffer size (less than 2GiB) for the storage of intermediate results. The computation engine in the Indexer processes will use a scratch buffer of this size to do all of their intermediate computations off-heap. Larger values allow for more aggregations in a single pass over the data while smaller values can require more passes depending on the query that is being executed. <a href="/docs/26.0.0/configuration [...]
<tr><td><code>druid.processing.buffer.poolCacheMaxCount</code></td><td>processing buffer pool caches the buffers for later use, this is the maximum count cache will grow to. note that pool can create more buffers than it can cache if necessary.</td><td>Integer.MAX_VALUE</td></tr>
<tr><td><code>druid.processing.formatString</code></td><td>Indexer processes use this format string to name their processing threads.</td><td>processing-%s</td></tr>
<tr><td><code>druid.processing.numMergeBuffers</code></td><td>The number of direct memory buffers available for merging query results. The buffers are sized by <code>druid.processing.buffer.sizeBytes</code>. This property is effectively a concurrency limit for queries that require merging buffers. If you are using any queries that require merge buffers (currently, just groupBy v2) then you should have at least two of these.</td><td><code>max(2, druid.processing.numThreads / 4)</code></td></tr>
@@ -1754,7 +1800,7 @@ line.</p>
<p>See <a href="#cache-configuration">cache configuration</a> for how to configure cache settings.</p>
<p>Note that only local caches such as the <code>local</code>-type cache and <code>caffeine</code> cache are supported. If a remote cache such as <code>memcached</code> is used, it will be ignored.</p>
<h3><a class="anchor" aria-hidden="true" id="historical"></a><a href="#historical" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1 [...]
-<p>For general Historical Process information, see <a href="/docs/latest/design/historical.html">here</a>.</p>
+<p>For general Historical Process information, see <a href="/docs/26.0.0/design/historical.html">here</a>.</p>
<p>These Historical configurations can be defined in the <code>historical/runtime.properties</code> file.</p>
<h4><a class="anchor" aria-hidden="true" id="historical-process-configuration"></a><a href="#historical-process-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13. [...]
<table>
@@ -1765,7 +1811,7 @@ line.</p>
<tr><td><code>druid.host</code></td><td>The host for the current process. This is used to advertise the current processes location as reachable from another process and should generally be specified such that <code>http://${druid.host}/</code> could actually talk to this process</td><td>InetAddress.getLocalHost().getCanonicalHostName()</td></tr>
<tr><td><code>druid.bindOnHost</code></td><td>Indicating whether the process's internal jetty server bind on <code>druid.host</code>. Default is false, which means binding to all interfaces.</td><td>false</td></tr>
<tr><td><code>druid.plaintextPort</code></td><td>This is the port to actually listen on; unless port mapping is used, this will be the same port as is on <code>druid.host</code></td><td>8083</td></tr>
-<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/latest/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>8283</td></tr>
+<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/26.0.0/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>8283</td></tr>
<tr><td><code>druid.service</code></td><td>The name of the service. This is used as a dimension when emitting metrics and alerts to differentiate between the various services</td><td>druid/historical</td></tr>
</tbody>
</table>
@@ -1775,8 +1821,8 @@ line.</p>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>druid.server.maxSize</code></td><td>The maximum number of bytes-worth of segments that the process wants assigned to it. The Coordinator process will attempt to assign segments to a Historical process only if this property is greater than the total size of segments served by it. Since this property defines the upper limit on the total segment size that can be assigned to a Historical, it is defaulted to the sum of all <code>maxSize</code> values specified within <code>druid [...]
-<tr><td><code>druid.server.tier</code></td><td>A string to name the distribution tier that the storage process belongs to. Many of the <a href="/docs/latest/operations/rule-configuration.html">rules Coordinator processes use</a> to manage segments can be keyed on tiers.</td><td><code>_default_tier</code></td></tr>
+<tr><td><code>druid.server.maxSize</code></td><td>The maximum number of bytes-worth of segments that the process wants assigned to it. The Coordinator process will attempt to assign segments to a Historical process only if this property is greater than the total size of segments served by it. Since this property defines the upper limit on the total segment size that can be assigned to a Historical, it is defaulted to the sum of all <code>maxSize</code> values specified within <code>druid [...]
+<tr><td><code>druid.server.tier</code></td><td>A string to name the distribution tier that the storage process belongs to. Many of the <a href="/docs/26.0.0/operations/rule-configuration.html">rules Coordinator processes use</a> to manage segments can be keyed on tiers.</td><td><code>_default_tier</code></td></tr>
<tr><td><code>druid.server.priority</code></td><td>In a tiered architecture, the priority of the tier, thus allowing control over which processes are queried. Higher numbers mean higher priority. The default (no priority) works for architecture with no cross replication (tiers that have no data-storage overlap). Data centers typically have equal priority.</td><td>0</td></tr>
</tbody>
</table>
@@ -1829,7 +1875,7 @@ line.</p>
<tr><td><code>druid.server.http.defaultQueryTimeout</code></td><td>Query timeout in millis, beyond which unfinished queries will be cancelled</td><td>300000</td></tr>
<tr><td><code>druid.server.http.gracefulShutdownTimeout</code></td><td>The maximum amount of time Jetty waits after receiving shutdown signal. After this timeout the threads will be forcefully shutdown. This allows any queries that are executing to complete(Only values greater than zero are valid).</td><td><code>PT30S</code></td></tr>
<tr><td><code>druid.server.http.unannouncePropagationDelay</code></td><td>How long to wait for ZooKeeper unannouncements to propagate before shutting down Jetty. This is a minimum and <code>druid.server.http.gracefulShutdownTimeout</code> does not start counting down until after this period elapses.</td><td><code>PT0S</code> (do not wait)</td></tr>
-<tr><td><code>druid.server.http.maxQueryTimeout</code></td><td>Maximum allowed value (in milliseconds) for <code>timeout</code> parameter. See <a href="/docs/latest/querying/query-context.html">query-context</a> to know more about <code>timeout</code>. Query is rejected if the query context <code>timeout</code> is greater than this value.</td><td>Long.MAX_VALUE</td></tr>
+<tr><td><code>druid.server.http.maxQueryTimeout</code></td><td>Maximum allowed value (in milliseconds) for <code>timeout</code> parameter. See <a href="/docs/26.0.0/querying/query-context.html">query-context</a> to know more about <code>timeout</code>. Query is rejected if the query context <code>timeout</code> is greater than this value.</td><td>Long.MAX_VALUE</td></tr>
<tr><td><code>druid.server.http.maxRequestHeaderSize</code></td><td>Maximum size of a request header in bytes. Larger headers consume more memory and can make a server more vulnerable to denial of service attacks.</td><td>8 * 1024</td></tr>
<tr><td><code>druid.server.http.contentSecurityPolicy</code></td><td>Content-Security-Policy header value to set on each non-POST response. Setting this property to an empty string, or omitting it, both result in the default <code>frame-ancestors: none</code> being set.</td><td><code>frame-ancestors 'none'</code></td></tr>
</tbody>
@@ -1840,7 +1886,7 @@ line.</p>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>druid.processing.buffer.sizeBytes</code></td><td>This specifies a buffer size (less than 2GiB), for the storage of intermediate results. The computation engine in both the Historical and Realtime processes will use a scratch buffer of this size to do all of their intermediate computations off-heap. Larger values allow for more aggregations in a single pass over the data while smaller values can require more passes depending on the query that is being executed. <a href="/do [...]
+<tr><td><code>druid.processing.buffer.sizeBytes</code></td><td>This specifies a buffer size (less than 2GiB), for the storage of intermediate results. The computation engine in both the Historical and Realtime processes will use a scratch buffer of this size to do all of their intermediate computations off-heap. Larger values allow for more aggregations in a single pass over the data while smaller values can require more passes depending on the query that is being executed. <a href="/do [...]
<tr><td><code>druid.processing.buffer.poolCacheMaxCount</code></td><td>processing buffer pool caches the buffers for later use, this is the maximum count cache will grow to. note that pool can create more buffers than it can cache if necessary.</td><td>Integer.MAX_VALUE</td></tr>
<tr><td><code>druid.processing.formatString</code></td><td>Realtime and Historical processes use this format string to name their processing threads.</td><td>processing-%s</td></tr>
<tr><td><code>druid.processing.numMergeBuffers</code></td><td>The number of direct memory buffers available for merging query results. The buffers are sized by <code>druid.processing.buffer.sizeBytes</code>. This property is effectively a concurrency limit for queries that require merging buffers. If you are using any queries that require merge buffers (currently, just groupBy v2) then you should have at least two of these.</td><td><code>max(2, druid.processing.numThreads / 4)</code></td></tr>
@@ -1871,10 +1917,10 @@ line.</p>
</table>
<p>See <a href="#cache-configuration">cache configuration</a> for how to configure cache settings.</p>
<h2><a class="anchor" aria-hidden="true" id="query-server"></a><a href="#query-server" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
-<p>This section contains the configuration options for the processes that reside on Query servers (Brokers) in the suggested <a href="/docs/latest/design/processes.html#server-types">three-server configuration</a>.</p>
-<p>Configuration options for the experimental <a href="/docs/latest/design/router.html">Router process</a> are also provided here.</p>
+<p>This section contains the configuration options for the processes that reside on Query servers (Brokers) in the suggested <a href="/docs/26.0.0/design/processes.html#server-types">three-server configuration</a>.</p>
+<p>Configuration options for the experimental <a href="/docs/26.0.0/design/router.html">Router process</a> are also provided here.</p>
<h3><a class="anchor" aria-hidden="true" id="broker"></a><a href="#broker" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2. [...]
-<p>For general Broker process information, see <a href="/docs/latest/design/broker.html">here</a>.</p>
+<p>For general Broker process information, see <a href="/docs/26.0.0/design/broker.html">here</a>.</p>
<p>These Broker configurations can be defined in the <code>broker/runtime.properties</code> file.</p>
<h4><a class="anchor" aria-hidden="true" id="broker-process-configs"></a><a href="#broker-process-configs" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0 [...]
<table>
@@ -1885,7 +1931,7 @@ line.</p>
<tr><td><code>druid.host</code></td><td>The host for the current process. This is used to advertise the current processes location as reachable from another process and should generally be specified such that <code>http://${druid.host}/</code> could actually talk to this process</td><td>InetAddress.getLocalHost().getCanonicalHostName()</td></tr>
<tr><td><code>druid.bindOnHost</code></td><td>Indicating whether the process's internal jetty server bind on <code>druid.host</code>. Default is false, which means binding to all interfaces.</td><td>false</td></tr>
<tr><td><code>druid.plaintextPort</code></td><td>This is the port to actually listen on; unless port mapping is used, this will be the same port as is on <code>druid.host</code></td><td>8082</td></tr>
-<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/latest/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>8282</td></tr>
+<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/26.0.0/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>8282</td></tr>
<tr><td><code>druid.service</code></td><td>The name of the service. This is used as a dimension when emitting metrics and alerts to differentiate between the various services</td><td>druid/broker</td></tr>
</tbody>
</table>
@@ -1915,7 +1961,7 @@ line.</p>
</table>
<h5><a class="anchor" aria-hidden="true" id="prioritization-strategies"></a><a href="#prioritization-strategies" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c [...]
<h6><a class="anchor" aria-hidden="true" id="manual-prioritization-strategy"></a><a href="#manual-prioritization-strategy" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 1 [...]
-<p>With this configuration, queries are never assigned a priority automatically, but will preserve a priority manually set on the <a href="/docs/latest/querying/query-context.html">query context</a> with the <code>priority</code> key. This mode can be explicitly set by setting <code>druid.query.scheduler.prioritization.strategy</code> to <code>manual</code>.</p>
+<p>With this configuration, queries are never assigned a priority automatically, but will preserve a priority manually set on the <a href="/docs/26.0.0/querying/query-context.html">query context</a> with the <code>priority</code> key. This mode can be explicitly set by setting <code>druid.query.scheduler.prioritization.strategy</code> to <code>manual</code>.</p>
<h6><a class="anchor" aria-hidden="true" id="threshold-prioritization-strategy"></a><a href="#threshold-prioritization-strategy" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S1 [...]
<p>This prioritization strategy lowers the priority of queries that cross any of a configurable set of thresholds, such as how far in the past the data is, how large of an interval a query covers, or the number of segments taking part in a query.</p>
<p>This strategy can be enabled by setting <code>druid.query.scheduler.prioritization.strategy</code> to <code>threshold</code>.</p>
@@ -1935,7 +1981,7 @@ line.</p>
<p>In this mode, queries are never assigned a lane, and the concurrent query count will only be limited by <code>druid.server.http.numThreads</code> or <code>druid.query.scheduler.numThreads</code>, if set. This is the default Druid query scheduler operating mode. Enable this strategy explicitly by setting <code>druid.query.scheduler.laning.strategy</code> to <code>none</code>.</p>
<h6><a class="anchor" aria-hidden="true" id="highlow-laning-strategy"></a><a href="#highlow-laning-strategy" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 [...]
<p>This laning strategy splits queries with a <code>priority</code> below zero into a <code>low</code> query lane, automatically. Queries with priority of zero (the default) or above are considered 'interactive'. The limit on <code>low</code> queries can be set to some desired percentage of the total capacity (or HTTP thread pool size), reserving capacity for interactive queries. Queries in the <code>low</code> lane are <em>not</em> guaranteed their capacity, which may be consumed by int [...]
-<p>If the <code>low</code> lane is specified in the <a href="/docs/latest/querying/query-context.html">query context</a> <code>lane</code> parameter, this will override the computed lane.</p>
+<p>If the <code>low</code> lane is specified in the <a href="/docs/26.0.0/querying/query-context.html">query context</a> <code>lane</code> parameter, this will override the computed lane.</p>
<p>This strategy can be enabled by setting <code>druid.query.scheduler.laning.strategy=hilo</code>.</p>
<table>
<thead>
@@ -1946,7 +1992,7 @@ line.</p>
</tbody>
</table>
<h6><a class="anchor" aria-hidden="true" id="manual-laning-strategy"></a><a href="#manual-laning-strategy" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0 [...]
-<p>This laning strategy is best suited for cases where one or more external applications which query Druid are capable of manually deciding what lane a given query should belong to. Configured with a map of lane names to percent or exact max capacities, queries with a matching <code>lane</code> parameter in the <a href="/docs/latest/querying/query-context.html">query context</a> will be subjected to those limits.</p>
+<p>This laning strategy is best suited for cases where one or more external applications which query Druid are capable of manually deciding what lane a given query should belong to. Configured with a map of lane names to percent or exact max capacities, queries with a matching <code>lane</code> parameter in the <a href="/docs/26.0.0/querying/query-context.html">query context</a> will be subjected to those limits.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
@@ -1957,7 +2003,7 @@ line.</p>
</tbody>
</table>
<h5><a class="anchor" aria-hidden="true" id="server-configuration"></a><a href="#server-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1 [...]
-<p>Druid uses Jetty to serve HTTP requests. Each query being processed consumes a single thread from <code>druid.server.http.numThreads</code>, so consider defining <code>druid.query.scheduler.numThreads</code> to a lower value in order to reserve HTTP threads for responding to health checks, lookup loading, and other non-query, and in most cases comparatively very short lived, HTTP requests.</p>
+<p>Druid uses Jetty to serve HTTP requests. Each query being processed consumes a single thread from <code>druid.server.http.numThreads</code>, so consider defining <code>druid.query.scheduler.numThreads</code> to a lower value in order to reserve HTTP threads for responding to health checks, lookup loading, and other non-query, (in most cases) comparatively very short-lived, HTTP requests.</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
@@ -1968,17 +2014,18 @@ line.</p>
<tr><td><code>druid.server.http.maxIdleTime</code></td><td>The Jetty max idle time for a connection.</td><td>PT5M</td></tr>
<tr><td><code>druid.server.http.enableRequestLimit</code></td><td>If enabled, no requests would be queued in jetty queue and "HTTP 429 Too Many Requests" error response would be sent.</td><td>false</td></tr>
<tr><td><code>druid.server.http.defaultQueryTimeout</code></td><td>Query timeout in millis, beyond which unfinished queries will be cancelled</td><td>300000</td></tr>
-<tr><td><code>druid.server.http.maxScatterGatherBytes</code></td><td>Maximum number of bytes gathered from data processes such as Historicals and realtime processes to execute a query. Queries that exceed this limit will fail. This is an advance configuration that allows to protect in case Broker is under heavy load and not utilizing the data gathered in memory fast enough and leading to OOMs. This limit can be further reduced at query time using <code>maxScatterGatherBytes</code> in the [...]
+<tr><td><code>druid.server.http.maxScatterGatherBytes</code></td><td>Maximum number of bytes gathered from data processes such as Historicals and realtime processes to execute a query. Queries that exceed this limit will fail. This is an advance configuration that allows to protect in case Broker is under heavy load and not utilizing the data gathered in memory fast enough and leading to OOMs. This limit can be further reduced at query time using <code>maxScatterGatherBytes</code> in the [...]
<tr><td><code>druid.server.http.maxSubqueryRows</code></td><td>Maximum number of rows from all subqueries per query. Druid stores the subquery rows in temporary tables that live in the Java heap. <code>druid.server.http.maxSubqueryRows</code> is a guardrail to prevent the system from exhausting available heap. When a subquery exceeds the row limit, Druid throws a resource limit exceeded exception: "Subquery generated results beyond maximum."<br /><br />It is a good practice to [...]
<tr><td><code>druid.server.http.gracefulShutdownTimeout</code></td><td>The maximum amount of time Jetty waits after receiving shutdown signal. After this timeout the threads will be forcefully shutdown. This allows any queries that are executing to complete(Only values greater than zero are valid).</td><td><code>PT30S</code></td></tr>
<tr><td><code>druid.server.http.unannouncePropagationDelay</code></td><td>How long to wait for ZooKeeper unannouncements to propagate before shutting down Jetty. This is a minimum and <code>druid.server.http.gracefulShutdownTimeout</code> does not start counting down until after this period elapses.</td><td><code>PT0S</code> (do not wait)</td></tr>
-<tr><td><code>druid.server.http.maxQueryTimeout</code></td><td>Maximum allowed value (in milliseconds) for <code>timeout</code> parameter. See <a href="/docs/latest/querying/query-context.html">query-context</a> to know more about <code>timeout</code>. Query is rejected if the query context <code>timeout</code> is greater than this value.</td><td>Long.MAX_VALUE</td></tr>
+<tr><td><code>druid.server.http.maxQueryTimeout</code></td><td>Maximum allowed value (in milliseconds) for <code>timeout</code> parameter. See <a href="/docs/26.0.0/querying/query-context.html">query-context</a> to know more about <code>timeout</code>. Query is rejected if the query context <code>timeout</code> is greater than this value.</td><td>Long.MAX_VALUE</td></tr>
<tr><td><code>druid.server.http.maxRequestHeaderSize</code></td><td>Maximum size of a request header in bytes. Larger headers consume more memory and can make a server more vulnerable to denial of service attacks.</td><td>8 * 1024</td></tr>
<tr><td><code>druid.server.http.contentSecurityPolicy</code></td><td>Content-Security-Policy header value to set on each non-POST response. Setting this property to an empty string, or omitting it, both result in the default <code>frame-ancestors: none</code> being set.</td><td><code>frame-ancestors 'none'</code></td></tr>
+<tr><td><code>druid.server.http.enableHSTS</code></td><td>If set to true, druid services will add strict transport security header <code>Strict-Transport-Security: max-age=63072000; includeSubDomains</code> to all HTTP responses</td><td><code>false</code></td></tr>
</tbody>
</table>
<h5><a class="anchor" aria-hidden="true" id="client-configuration"></a><a href="#client-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1 [...]
-<p>Druid Brokers use an HTTP client to communicate with with data servers (Historical servers and real-time tasks). This
+<p>Druid Brokers use an HTTP client to communicate with data servers (Historical servers and real-time tasks). This
client has the following configuration options.</p>
<table>
<thead>
@@ -1990,7 +2037,7 @@ client has the following configuration options.</p>
<tr><td><code>druid.broker.http.compressionCodec</code></td><td>Compression codec the Broker uses to communicate with Historical and real-time processes. May be "gzip" or "identity".</td><td><code>gzip</code></td></tr>
<tr><td><code>druid.broker.http.readTimeout</code></td><td>The timeout for data reads from Historical servers and real-time tasks.</td><td><code>PT15M</code></td></tr>
<tr><td><code>druid.broker.http.unusedConnectionTimeout</code></td><td>The timeout for idle connections in connection pool. The connection in the pool will be closed after this timeout and a new one will be established. This timeout should be less than <code>druid.broker.http.readTimeout</code>. Set this timeout = ~90% of <code>druid.broker.http.readTimeout</code></td><td><code>PT4M</code></td></tr>
-<tr><td><code>druid.broker.http.maxQueuedBytes</code></td><td>Maximum number of bytes queued per query before exerting backpressure on channels to the data servers.<br /><br />Similar to <code>druid.server.http.maxScatterGatherBytes</code>, except unlike that configuration, this one will trigger backpressure rather than query failure. Zero means disabled. Can be overridden by the <a href="/docs/latest/querying/query-context.html">"maxQueuedBytes" query context parameter</a>. Hu [...]
+<tr><td><code>druid.broker.http.maxQueuedBytes</code></td><td>Maximum number of bytes queued per query before exerting backpressure on channels to the data servers.<br /><br />Similar to <code>druid.server.http.maxScatterGatherBytes</code>, except unlike that configuration, this one will trigger backpressure rather than query failure. Zero means disabled. Can be overridden by the <a href="/docs/26.0.0/querying/query-context.html">"maxQueuedBytes" query context parameter</a>. Hu [...]
<tr><td><code>druid.broker.http.numMaxThreads</code></td><td>`Maximum number of I/O worker threads</td><td>max(10, ((number of cores * 17) / 16 + 2) + 30)`</td></tr>
</tbody>
</table>
@@ -2011,7 +2058,7 @@ client has the following configuration options.</p>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>druid.processing.buffer.sizeBytes</code></td><td>This specifies a buffer size (less than 2GiB) for the storage of intermediate results. The computation engine in both the Historical and Realtime processes will use a scratch buffer of this size to do all of their intermediate computations off-heap. Larger values allow for more aggregations in a single pass over the data while smaller values can require more passes depending on the query that is being executed. <a href="/docs [...]
+<tr><td><code>druid.processing.buffer.sizeBytes</code></td><td>This specifies a buffer size (less than 2GiB) for the storage of intermediate results. The computation engine in both the Historical and Realtime processes will use a scratch buffer of this size to do all of their intermediate computations off-heap. Larger values allow for more aggregations in a single pass over the data while smaller values can require more passes depending on the query that is being executed. <a href="/docs [...]
<tr><td><code>druid.processing.buffer.poolCacheInitialCount</code></td><td>initializes the number of buffers allocated on the intermediate results pool. Note that pool can create more buffers if necessary.</td><td><code>0</code></td></tr>
<tr><td><code>druid.processing.buffer.poolCacheMaxCount</code></td><td>processing buffer pool caches the buffers for later use, this is the maximum count cache will grow to. note that pool can create more buffers than it can cache if necessary.</td><td>Integer.MAX_VALUE</td></tr>
<tr><td><code>druid.processing.numMergeBuffers</code></td><td>The number of direct memory buffers available for merging query results. The buffers are sized by <code>druid.processing.buffer.sizeBytes</code>. This property is effectively a concurrency limit for queries that require merging buffers. If you are using any queries that require merge buffers (currently, just groupBy v2) then you should have at least two of these.</td><td><code>max(2, druid.processing.numThreads / 4)</code></td></tr>
@@ -2063,19 +2110,19 @@ queries in order to avoid running as a default priority of 0.</p>
<tr><td><code>druid.sql.avatica.connectionIdleTimeout</code></td><td>Avatica client connection idle timeout.</td><td>PT5M</td></tr>
<tr><td><code>druid.sql.avatica.fetchTimeoutMs</code></td><td>Avatica fetch timeout, in milliseconds. When a request for the next batch of data takes longer than this time, Druid returns an empty result set, causing the client to poll again. This avoids HTTP timeouts for long-running queries. The default of 5 sec. is good for most cases.</td><td>5000</td></tr>
<tr><td><code>druid.sql.http.enable</code></td><td>Whether to enable JSON over HTTP querying at <code>/druid/v2/sql/</code>.</td><td>true</td></tr>
-<tr><td><code>druid.sql.planner.maxTopNLimit</code></td><td>Maximum threshold for a <a href="/docs/latest/querying/topnquery.html">TopN query</a>. Higher limits will be planned as <a href="/docs/latest/querying/groupbyquery.html">GroupBy queries</a> instead.</td><td>100000</td></tr>
+<tr><td><code>druid.sql.planner.maxTopNLimit</code></td><td>Maximum threshold for a <a href="/docs/26.0.0/querying/topnquery.html">TopN query</a>. Higher limits will be planned as <a href="/docs/26.0.0/querying/groupbyquery.html">GroupBy queries</a> instead.</td><td>100000</td></tr>
<tr><td><code>druid.sql.planner.metadataRefreshPeriod</code></td><td>Throttle for metadata refreshes.</td><td>PT1M</td></tr>
<tr><td><code>druid.sql.planner.useApproximateCountDistinct</code></td><td>Whether to use an approximate cardinality algorithm for <code>COUNT(DISTINCT foo)</code>.</td><td>true</td></tr>
<tr><td><code>druid.sql.planner.useGroupingSetForExactDistinct</code></td><td>Only relevant when <code>useApproximateCountDistinct</code> is disabled. If set to true, exact distinct queries are re-written using grouping sets. Otherwise, exact distinct queries are re-written using joins. This should be set to true for group by query with multiple exact distinct aggregations. This flag can be overridden per query.</td><td>false</td></tr>
-<tr><td><code>druid.sql.planner.useApproximateTopN</code></td><td>Whether to use approximate <a href="/docs/latest/querying/topnquery.html">TopN queries</a> when a SQL query could be expressed as such. If false, exact <a href="/docs/latest/querying/groupbyquery.html">GroupBy queries</a> will be used instead.</td><td>true</td></tr>
+<tr><td><code>druid.sql.planner.useApproximateTopN</code></td><td>Whether to use approximate <a href="/docs/26.0.0/querying/topnquery.html">TopN queries</a> when a SQL query could be expressed as such. If false, exact <a href="/docs/26.0.0/querying/groupbyquery.html">GroupBy queries</a> will be used instead.</td><td>true</td></tr>
<tr><td><code>druid.sql.planner.requireTimeCondition</code></td><td>Whether to require SQL to have filter conditions on __time column so that all generated native queries will have user specified intervals. If true, all queries without filter condition on __time column will fail</td><td>false</td></tr>
<tr><td><code>druid.sql.planner.sqlTimeZone</code></td><td>Sets the default time zone for the server, which will affect how time functions and timestamp literals behave. Should be a time zone name like "America/Los_Angeles" or offset like "-08:00".</td><td>UTC</td></tr>
<tr><td><code>druid.sql.planner.metadataSegmentCacheEnable</code></td><td>Whether to keep a cache of published segments in broker. If true, broker polls coordinator in background to get segments from metadata store and maintains a local cache. If false, coordinator's REST API will be invoked when broker needs published segments info.</td><td>false</td></tr>
<tr><td><code>druid.sql.planner.metadataSegmentPollPeriod</code></td><td>How often to poll coordinator for published segments list if <code>druid.sql.planner.metadataSegmentCacheEnable</code> is set to true. Poll period is in milliseconds.</td><td>60000</td></tr>
<tr><td><code>druid.sql.planner.authorizeSystemTablesDirectly</code></td><td>If true, Druid authorizes queries against any of the system schema tables (<code>sys</code> in SQL) as <code>SYSTEM_TABLE</code> resources which require <code>READ</code> access, in addition to permissions based content filtering.</td><td>false</td></tr>
<tr><td><code>druid.sql.planner.useNativeQueryExplain</code></td><td>If true, <code>EXPLAIN PLAN FOR</code> will return the explain plan as a JSON representation of equivalent native query(s), else it will return the original version of explain plan generated by Calcite. It can be overridden per query with <code>useNativeQueryExplain</code> context key.</td><td>true</td></tr>
-<tr><td><code>druid.sql.planner.maxNumericInFilters</code></td><td>Max limit for the amount of numeric values that can be compared for a string type dimension when the entire SQL WHERE clause of a query translates to an <a href="/docs/latest/querying/filters.html#or">OR</a> of <a href="/docs/latest/querying/filters.html#bound-filter">Bound filter</a>. By default, Druid does not restrict the amount of numeric Bound Filters on String columns, although this situation may block other queries [...]
-<tr><td><code>druid.sql.approxCountDistinct.function</code></td><td>Implementation to use for the <a href="/docs/latest/querying/sql-aggregations.html"><code>APPROX_COUNT_DISTINCT</code> function</a>. Without extensions loaded, the only valid value is <code>APPROX_COUNT_DISTINCT_BUILTIN</code> (a HyperLogLog, or HLL, based implementation). If the <a href="/docs/latest/development/extensions-core/datasketches-extension.html">DataSketches extension</a> is loaded, this can also be <code>APP [...]
+<tr><td><code>druid.sql.planner.maxNumericInFilters</code></td><td>Max limit for the amount of numeric values that can be compared for a string type dimension when the entire SQL WHERE clause of a query translates to an <a href="/docs/26.0.0/querying/filters.html#or">OR</a> of <a href="/docs/26.0.0/querying/filters.html#bound-filter">Bound filter</a>. By default, Druid does not restrict the amount of numeric Bound Filters on String columns, although this situation may block other queries [...]
+<tr><td><code>druid.sql.approxCountDistinct.function</code></td><td>Implementation to use for the <a href="/docs/26.0.0/querying/sql-aggregations.html"><code>APPROX_COUNT_DISTINCT</code> function</a>. Without extensions loaded, the only valid value is <code>APPROX_COUNT_DISTINCT_BUILTIN</code> (a HyperLogLog, or HLL, based implementation). If the <a href="/docs/26.0.0/development/extensions-core/datasketches-extension.html">DataSketches extension</a> is loaded, this can also be <code>APP [...]
</tbody>
</table>
<blockquote>
@@ -2102,8 +2149,8 @@ number of rows permitted across all subqueries.</p>
</table>
<p>See <a href="#cache-configuration">cache configuration</a> for how to configure cache settings.</p>
<blockquote>
-<p>Note: Even if cache is enabled, for <a href="/docs/latest/querying/groupbyquery.html#strategies">groupBy v2</a> queries, both of non-result level cache and result level cache do not work on Brokers.
-See <a href="/docs/latest/querying/groupbyquery.html#differences-between-v1-and-v2">Differences between v1 and v2</a> and <a href="/docs/latest/querying/caching.html">Query caching</a> for more information.</p>
+<p>Note: Even if cache is enabled, for <a href="/docs/26.0.0/querying/groupbyquery.html#strategies">groupBy v2</a> queries, both of non-result level cache and result level cache do not work on Brokers.
+See <a href="/docs/26.0.0/querying/groupbyquery.html#differences-between-v1-and-v2">Differences between v1 and v2</a> and <a href="/docs/26.0.0/querying/caching.html">Query caching</a> for more information.</p>
</blockquote>
<h4><a class="anchor" aria-hidden="true" id="segment-discovery"></a><a href="#segment-discovery" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2- [...]
<table>
@@ -2163,7 +2210,7 @@ for both Broker and Historical processes, when defined in the common properties
</thead>
<tbody>
<tr><td><code>druid.cache.type</code></td><td>Set this to <code>caffeine</code> or leave out parameter</td><td><code>caffeine</code></td></tr>
-<tr><td><code>druid.cache.sizeInBytes</code></td><td>The maximum size of the cache in bytes on heap. It can be configured as described in <a href="/docs/latest/configuration/human-readable-byte.html">here</a>.</td><td>min(1GiB, Runtime.maxMemory / 10)</td></tr>
+<tr><td><code>druid.cache.sizeInBytes</code></td><td>The maximum size of the cache in bytes on heap. It can be configured as described in <a href="/docs/26.0.0/configuration/human-readable-byte.html">here</a>.</td><td>min(1GiB, Runtime.maxMemory / 10)</td></tr>
<tr><td><code>druid.cache.expireAfter</code></td><td>The time (in ms) after an access for which a cache entry may be expired</td><td>None (no time limit)</td></tr>
<tr><td><code>druid.cache.cacheExecutorFactory</code></td><td>The executor factory to use for Caffeine maintenance. One of <code>COMMON_FJP</code>, <code>SINGLE_THREAD</code>, or <code>SAME_THREAD</code></td><td>ForkJoinPool common pool (<code>COMMON_FJP</code>)</td></tr>
<tr><td><code>druid.cache.evictOnClose</code></td><td>If a close of a namespace (ex: removing a segment from a process) should cause an eager eviction of associated cache values</td><td><code>false</code></td></tr>
@@ -2226,7 +2273,7 @@ If there is an L1 miss and L2 hit, it will also populate L1.</p>
<h2><a class="anchor" aria-hidden="true" id="general-query-configuration"></a><a href="#general-query-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 1 [...]
<p>This section describes configurations that control behavior of Druid's query types, applicable to Broker, Historical, and MiddleManager processes.</p>
<h3><a class="anchor" aria-hidden="true" id="overriding-default-query-context-values"></a><a href="#overriding-default-query-context-values" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 [...]
-<p>Any <a href="/docs/latest/querying/query-context.html#general-parameters">query context general parameter</a> default value can be
+<p>Any <a href="/docs/26.0.0/querying/query-context.html#general-parameters">query context general parameter</a> default value can be
overridden by setting the runtime property in the format of <code>druid.query.default.context.{query_context_key}</code>.
The <code>druid.query.default.context.{query_context_key}</code> runtime property prefix applies to all current and future
query context keys, the same as how query context parameter passed with the query works. Note that the runtime property
@@ -2254,7 +2301,7 @@ context). If query does have <code>maxQueuedBytes</code> in the context, then th
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>druid.query.topN.minTopNThreshold</code></td><td>See <a href="/docs/latest/querying/topnquery.html#aliasing">TopN Aliasing</a> for details.</td><td>1000</td></tr>
+<tr><td><code>druid.query.topN.minTopNThreshold</code></td><td>See <a href="/docs/26.0.0/querying/topnquery.html#aliasing">TopN Aliasing</a> for details.</td><td>1000</td></tr>
</tbody>
</table>
<h3><a class="anchor" aria-hidden="true" id="search-query-config"></a><a href="#search-query-config" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.2 [...]
@@ -2278,7 +2325,7 @@ context). If query does have <code>maxQueuedBytes</code> in the context, then th
</tbody>
</table>
<h3><a class="anchor" aria-hidden="true" id="groupby-query-config"></a><a href="#groupby-query-config" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1 [...]
-<p>This section describes the configurations for groupBy queries. You can set the runtime properties in the <code>runtime.properties</code> file on Broker, Historical, and MiddleManager processes. You can set the query context parameters through the <a href="/docs/latest/querying/query-context.html">query context</a>.</p>
+<p>This section describes the configurations for groupBy queries. You can set the runtime properties in the <code>runtime.properties</code> file on Broker, Historical, and MiddleManager processes. You can set the query context parameters through the <a href="/docs/26.0.0/querying/query-context.html">query context</a>.</p>
<h4><a class="anchor" aria-hidden="true" id="configurations-for-groupby-v2"></a><a href="#configurations-for-groupby-v2" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 [...]
<p>Supported runtime properties:</p>
<table>
@@ -2286,8 +2333,8 @@ context). If query does have <code>maxQueuedBytes</code> in the context, then th
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>druid.query.groupBy.maxSelectorDictionarySize</code></td><td>Maximum amount of heap space (approximately) to use for per-segment string dictionaries. See <a href="/docs/latest/querying/groupbyquery.html#memory-tuning-and-resource-limits">groupBy memory tuning and resource limits</a> for details.</td><td>100000000</td></tr>
-<tr><td><code>druid.query.groupBy.maxMergingDictionarySize</code></td><td>Maximum amount of heap space (approximately) to use for per-query string dictionaries. When the dictionary exceeds this size, a spill to disk will be triggered. See <a href="/docs/latest/querying/groupbyquery.html#memory-tuning-and-resource-limits">groupBy memory tuning and resource limits</a> for details.</td><td>100000000</td></tr>
+<tr><td><code>druid.query.groupBy.maxSelectorDictionarySize</code></td><td>Maximum amount of heap space (approximately) to use for per-segment string dictionaries. See <a href="/docs/26.0.0/querying/groupbyquery.html#memory-tuning-and-resource-limits">groupBy memory tuning and resource limits</a> for details.</td><td>100000000</td></tr>
+<tr><td><code>druid.query.groupBy.maxMergingDictionarySize</code></td><td>Maximum amount of heap space (approximately) to use for per-query string dictionaries. When the dictionary exceeds this size, a spill to disk will be triggered. See <a href="/docs/26.0.0/querying/groupbyquery.html#memory-tuning-and-resource-limits">groupBy memory tuning and resource limits</a> for details.</td><td>100000000</td></tr>
<tr><td><code>druid.query.groupBy.maxOnDiskStorage</code></td><td>Maximum amount of disk space to use, per-query, for spilling result sets to disk when either the merging buffer or the dictionary fills up. Queries that exceed this limit will fail. Set to zero to disable disk spilling.</td><td>0 (disabled)</td></tr>
<tr><td><code>druid.query.groupBy.defaultOnDiskStorage</code></td><td>Default amount of disk space to use, per-query, for spilling the result sets to disk when either the merging buffer or the dictionary fills up. Set to zero to disable disk spilling for queries which don't override <code>maxOnDiskStorage</code> in their context.</td><td><code>druid.query.groupBy.maxOnDiskStorage</code></td></tr>
</tbody>
@@ -2382,7 +2429,7 @@ context). If query does have <code>maxQueuedBytes</code> in the context, then th
<tr><th>Key</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
-<tr><td><code>druid.expressions.useStrictBooleans</code></td><td>Controls the behavior of Druid boolean operators and functions, if set to <code>true</code> all boolean values will be either a <code>1</code> or <code>0</code>. See <a href="/docs/latest/misc/math-expr.html#logical-operator-modes">expression documentation</a></td><td>false</td></tr>
+<tr><td><code>druid.expressions.useStrictBooleans</code></td><td>Controls the behavior of Druid boolean operators and functions, if set to <code>true</code> all boolean values will be either a <code>1</code> or <code>0</code>. See <a href="/docs/26.0.0/misc/math-expr.html#logical-operator-modes">expression documentation</a></td><td>false</td></tr>
<tr><td><code>druid.expressions.allowNestedArrays</code></td><td>If enabled, Druid array expressions can create nested arrays.</td><td>false</td></tr>
</tbody>
</table>
@@ -2396,7 +2443,7 @@ context). If query does have <code>maxQueuedBytes</code> in the context, then th
<tr><td><code>druid.host</code></td><td>The host for the current process. This is used to advertise the current processes location as reachable from another process and should generally be specified such that <code>http://${druid.host}/</code> could actually talk to this process</td><td>InetAddress.getLocalHost().getCanonicalHostName()</td></tr>
<tr><td><code>druid.bindOnHost</code></td><td>Indicating whether the process's internal jetty server bind on <code>druid.host</code>. Default is false, which means binding to all interfaces.</td><td>false</td></tr>
<tr><td><code>druid.plaintextPort</code></td><td>This is the port to actually listen on; unless port mapping is used, this will be the same port as is on <code>druid.host</code></td><td>8888</td></tr>
-<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/latest/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>9088</td></tr>
+<tr><td><code>druid.tlsPort</code></td><td>TLS port for HTTPS connector, if <a href="/docs/26.0.0/operations/tls-support.html">druid.enableTlsPort</a> is set then this config will be used. If <code>druid.host</code> contains port then that port will be ignored. This should be a non-negative Integer.</td><td>9088</td></tr>
<tr><td><code>druid.service</code></td><td>The name of the service. This is used as a dimension when emitting metrics and alerts to differentiate between the various services</td><td>druid/router</td></tr>
</tbody>
</table>
@@ -2411,9 +2458,9 @@ context). If query does have <code>maxQueuedBytes</code> in the context, then th
<tr><td><code>druid.router.defaultRule</code></td><td>The default rule for all datasources.</td><td>"_default"</td></tr>
<tr><td><code>druid.router.pollPeriod</code></td><td>How often to poll for new rules.</td><td>PT1M</td></tr>
<tr><td><code>druid.router.sql.enable</code></td><td>Enable routing of SQL queries using strategies. When<code>true</code>, the Router uses the strategies defined in <code>druid.router.strategies</code> to determine the broker service for a given SQL query. When <code>false</code>, the Router uses the <code>defaultBrokerServiceName</code>.</td><td><code>false</code></td></tr>
-<tr><td><code>druid.router.strategies</code></td><td>Please see <a href="/docs/latest/design/router.html#router-strategies">Router Strategies</a> for details.</td><td>[{"type":"timeBoundary"},{"type":"priority"}]</td></tr>
-<tr><td><code>druid.router.avatica.balancer.type</code></td><td>Class to use for balancing Avatica queries across Brokers. Please see <a href="/docs/latest/design/router.html#avatica-query-balancing">Avatica Query Balancing</a>.</td><td>rendezvousHash</td></tr>
-<tr><td><code>druid.router.managementProxy.enabled</code></td><td>Enables the Router's <a href="/docs/latest/design/router.html#router-as-management-proxy">management proxy</a> functionality.</td><td>false</td></tr>
+<tr><td><code>druid.router.strategies</code></td><td>Please see <a href="/docs/26.0.0/design/router.html#router-strategies">Router Strategies</a> for details.</td><td>[{"type":"timeBoundary"},{"type":"priority"}]</td></tr>
+<tr><td><code>druid.router.avatica.balancer.type</code></td><td>Class to use for balancing Avatica queries across Brokers. Please see <a href="/docs/26.0.0/design/router.html#avatica-query-balancing">Avatica Query Balancing</a>.</td><td>rendezvousHash</td></tr>
+<tr><td><code>druid.router.managementProxy.enabled</code></td><td>Enables the Router's <a href="/docs/26.0.0/design/router.html#router-as-management-proxy">management proxy</a> functionality.</td><td>false</td></tr>
<tr><td><code>druid.router.http.numConnections</code></td><td>Size of connection pool for the Router to connect to Broker processes. If there are more queries than this number that all need to speak to the same process, then they will queue up.</td><td><code>20</code></td></tr>
<tr><td><code>druid.router.http.eagerInitialization</code></td><td>Indicates that http connections from Router to Broker should be eagerly initialized. If set to true, <code>numConnections</code> connections are created upon initialization</td><td><code>true</code></td></tr>
<tr><td><code>druid.router.http.readTimeout</code></td><td>The timeout for data reads from Broker processes.</td><td><code>PT15M</code></td></tr>
@@ -2422,7 +2469,7 @@ context). If query does have <code>maxQueuedBytes</code> in the context, then th
<tr><td><code>druid.router.http.requestBuffersize</code></td><td>Size of the content buffer for receiving requests. These buffers are only used for active connections that have requests with bodies that will not fit within the header buffer</td><td><code>8 * 1024</code></td></tr>
</tbody>
</table>
-</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/latest/development/geo.html"><span class="arrow-prev">← </span><span>Spatial filters</span></a><a class="docs-next button" href="/docs/latest/development/extensions.html"><span>Extensions</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#recommended-configuration-file-organization">Recommended Configuration File Organiza [...]
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/development/geo.html"><span class="arrow-prev">← </span><span>Spatial filters</span></a><a class="docs-next button" href="/docs/26.0.0/development/extensions.html"><span>Extensions</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#recommended-configuration-file-organization">Recommended Configuration File Organiza [...]
document.addEventListener('keyup', function(e) {
if (e.target !== document.body) {
return;
@@ -2439,6 +2486,6 @@ context). If query does have <code>maxQueuedBytes</code> in the context, then th
apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
indexName: 'apache_druid',
inputSelector: '#search_input_react',
- algoliaOptions: {"facetFilters":["language:en","version:25.0.0"]}
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
});
</script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/configuration/indexing-service.html b/docs/26.0.0/configuration/indexing-service.html
new file mode 100644
index 00000000..4189126d
--- /dev/null
+++ b/docs/26.0.0/configuration/indexing-service.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../configuration/index.html#overlord">
+<meta http-equiv="refresh" content="0; url=../configuration/index.html#overlord">
+<h1>Redirecting...</h1>
+<a href="../configuration/index.html#overlord">Click here if you are not redirected.</a>
+<script>location="../configuration/index.html#overlord"</script>
diff --git a/docs/latest/configuration/logging.html b/docs/26.0.0/configuration/logging.html
similarity index 52%
copy from docs/latest/configuration/logging.html
copy to docs/26.0.0/configuration/logging.html
index fe4e7717..c5c9aa80 100644
--- a/docs/latest/configuration/logging.html
+++ b/docs/26.0.0/configuration/logging.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Logging · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/configuration/logging.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content="2 [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Logging · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/configuration/logging.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content="2 [...]
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'UA-131010415-1');
- </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
var coll = document.getElementsByClassName('collapsible');
var checkActiveCategory = true;
for (var i = 0; i < coll.length; i++) {
@@ -78,7 +78,7 @@
~ under the License.
-->
<p>Apache Druid services emit logs that to help you debug.
-The same services also emit periodic <a href="/docs/latest/configuration/index.html#enabling-metrics">metrics</a> about their state.
+The same services also emit periodic <a href="/docs/26.0.0/configuration/index.html#enabling-metrics">metrics</a> about their state.
To disable metric info logs set the following runtime property: <code>-Ddruid.emitter.logging.logLevel=debug</code>.</p>
<p>Druid uses <a href="http://logging.apache.org/log4j/2.x/">log4j2</a> for logging.
The default configuration file log4j2.xml ships with Druid at the following path: <code>conf/druid/{config}/_common/log4j2.xml</code>.</p>
@@ -157,7 +157,7 @@ If that's not suitable in your case, modify the <code>log4j2.xml</code> accordin
<p>NOTE:
Although Druid shares the log4j configuration file task peon processes,
the appenders in this file DO NOT take effect for peon processes. Peons always output logs to standard output.
-Middle Managers redirect task logs from standard output to <a href="/docs/latest/configuration/index.html#log-long-term-storage">long-term storage</a>.</p>
+Middle Managers redirect task logs from standard output to <a href="/docs/26.0.0/configuration/index.html#log-long-term-storage">long-term storage</a>.</p>
<p>However, log level settings do take effect for these task peon processes.
This means you can configure loggers at different logging level for task logs using <code>log4j2.xml</code>.</p>
</blockquote>
@@ -182,7 +182,7 @@ If necessary, you can truncate it using the Linux command <code>truncate --size
<span class="hljs-symbol">WARNING: </span>All illegal access operations will be denied in a future release
</code></pre>
<p>To avoid these, add the <code>--add-exports</code> and <code>--add-opens</code> command line parameters described in the documentation section
-about <a href="/docs/latest/operations/java.html#strong-encapsulation">Java strong encapsulation</a>.</p>
+about <a href="/docs/26.0.0/operations/java.html#strong-encapsulation">Java strong encapsulation</a>.</p>
<h2><a class="anchor" aria-hidden="true" id="set-the-logs-to-asynchronously-write"></a><a href="#set-the-logs-to-asynchronously-write" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 [...]
<p>If your logs are really chatty, you can set them to write asynchronously.
The following example shows a <code>log4j2.xml</code> that configures some of the more chatty classes to write asynchronously:</p>
@@ -215,7 +215,7 @@ The following example shows a <code>log4j2.xml</code> that configures some of th
<span class="hljs-tag"></<span class="hljs-name">Loggers</span>></span>
<span class="hljs-tag"></<span class="hljs-name">Configuration</span>></span>
</span></code></pre>
-</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/latest/development/extensions.html"><span class="arrow-prev">← </span><span>Extensions</span></a><a class="docs-next button" href="/docs/latest/operations/web-console.html"><span>Web console</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#log-directory">Log directory</a></li><li><a href="#all-in-one-start-commands">All [...]
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/development/extensions.html"><span class="arrow-prev">← </span><span>Extensions</span></a><a class="docs-next button" href="/docs/26.0.0/operations/web-console.html"><span>Web console</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#log-directory">Log directory</a></li><li><a href="#all-in-one-start-commands">All [...]
document.addEventListener('keyup', function(e) {
if (e.target !== document.body) {
return;
@@ -232,6 +232,6 @@ The following example shows a <code>log4j2.xml</code> that configures some of th
apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
indexName: 'apache_druid',
inputSelector: '#search_input_react',
- algoliaOptions: {"facetFilters":["language:en","version:25.0.0"]}
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
});
</script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/configuration/production-cluster.html b/docs/26.0.0/configuration/production-cluster.html
new file mode 100644
index 00000000..d3b1d39a
--- /dev/null
+++ b/docs/26.0.0/configuration/production-cluster.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../tutorials/cluster.html">
+<meta http-equiv="refresh" content="0; url=../tutorials/cluster.html">
+<h1>Redirecting...</h1>
+<a href="../tutorials/cluster.html">Click here if you are not redirected.</a>
+<script>location="../tutorials/cluster.html"</script>
diff --git a/docs/26.0.0/configuration/realtime.html b/docs/26.0.0/configuration/realtime.html
new file mode 100644
index 00000000..2f57fca1
--- /dev/null
+++ b/docs/26.0.0/configuration/realtime.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../ingestion/standalone-realtime.html">
+<meta http-equiv="refresh" content="0; url=../ingestion/standalone-realtime.html">
+<h1>Redirecting...</h1>
+<a href="../ingestion/standalone-realtime.html">Click here if you are not redirected.</a>
+<script>location="../ingestion/standalone-realtime.html"</script>
diff --git a/docs/26.0.0/configuration/simple-cluster.html b/docs/26.0.0/configuration/simple-cluster.html
new file mode 100644
index 00000000..d3b1d39a
--- /dev/null
+++ b/docs/26.0.0/configuration/simple-cluster.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../tutorials/cluster.html">
+<meta http-equiv="refresh" content="0; url=../tutorials/cluster.html">
+<h1>Redirecting...</h1>
+<a href="../tutorials/cluster.html">Click here if you are not redirected.</a>
+<script>location="../tutorials/cluster.html"</script>
diff --git a/docs/26.0.0/configuration/zookeeper.html b/docs/26.0.0/configuration/zookeeper.html
new file mode 100644
index 00000000..24b46306
--- /dev/null
+++ b/docs/26.0.0/configuration/zookeeper.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../dependencies/zookeeper.html">
+<meta http-equiv="refresh" content="0; url=../dependencies/zookeeper.html">
+<h1>Redirecting...</h1>
+<a href="../dependencies/zookeeper.html">Click here if you are not redirected.</a>
+<script>location="../dependencies/zookeeper.html"</script>
diff --git a/docs/latest/data-management/automatic-compaction.html b/docs/26.0.0/data-management/automatic-compaction.html
similarity index 53%
copy from docs/latest/data-management/automatic-compaction.html
copy to docs/26.0.0/data-management/automatic-compaction.html
index a10971fa..334da9ab 100644
--- a/docs/latest/data-management/automatic-compaction.html
+++ b/docs/26.0.0/data-management/automatic-compaction.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Automatic compaction · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/data-management/automatic-compaction.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="d [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Automatic compaction · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/data-management/automatic-compaction.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="d [...]
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'UA-131010415-1');
- </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
var coll = document.getElementsByClassName('collapsible');
var checkActiveCategory = true;
for (var i = 0; i < coll.length; i++) {
@@ -77,19 +77,19 @@
~ specific language governing permissions and limitations
~ under the License.
-->
-<p>In Apache Druid, compaction is a special type of ingestion task that reads data from a Druid datasource and writes it back into the same datasource. A common use case for this is to <a href="/docs/latest/operations/segment-optimization.html">optimally size segments</a> after ingestion to improve query performance. Automatic compaction, or auto-compaction, refers to the system for automatic execution of compaction tasks managed by the <a href="/docs/latest/design/coordinator.html">Drui [...]
-<p>The Coordinator <a href="/docs/latest/configuration/index.html#coordinator-operation">indexing period</a>, <code>druid.coordinator.period.indexingPeriod</code>, controls the frequency of compaction tasks.
+<p>In Apache Druid, compaction is a special type of ingestion task that reads data from a Druid datasource and writes it back into the same datasource. A common use case for this is to <a href="/docs/26.0.0/operations/segment-optimization.html">optimally size segments</a> after ingestion to improve query performance. Automatic compaction, or auto-compaction, refers to the system for automatic execution of compaction tasks managed by the <a href="/docs/26.0.0/design/coordinator.html">Drui [...]
+<p>The Coordinator <a href="/docs/26.0.0/configuration/index.html#coordinator-operation">indexing period</a>, <code>druid.coordinator.period.indexingPeriod</code>, controls the frequency of compaction tasks.
The default indexing period is 30 minutes, meaning that the Coordinator first checks for segments to compact at most 30 minutes from when auto-compaction is enabled.
This time period affects other Coordinator duties including merge and conversion tasks.
To configure the auto-compaction time period without interfering with <code>indexingPeriod</code>, see <a href="#set-frequency-of-compaction-runs">Set frequency of compaction runs</a>.</p>
-<p>At every invocation of auto-compaction, the Coordinator initiates a <a href="/docs/latest/design/coordinator.html#segment-search-policy-in-automatic-compaction">segment search</a> to determine eligible segments to compact.
+<p>At every invocation of auto-compaction, the Coordinator initiates a <a href="/docs/26.0.0/design/coordinator.html#segment-search-policy-in-automatic-compaction">segment search</a> to determine eligible segments to compact.
When there are eligible segments to compact, the Coordinator issues compaction tasks based on available worker capacity.
If a compaction task takes longer than the indexing period, the Coordinator waits for it to finish before resuming the period for segment search.</p>
-<p>As a best practice, you should set up auto-compaction for all Druid datasources. You can run compaction tasks manually for cases where you want to allocate more system resources. For example, you may choose to run multiple compaction tasks in parallel to compact an existing datasource for the first time. See <a href="/docs/latest/data-management/compaction.html">Compaction</a> for additional details and use cases.</p>
+<p>As a best practice, you should set up auto-compaction for all Druid datasources. You can run compaction tasks manually for cases where you want to allocate more system resources. For example, you may choose to run multiple compaction tasks in parallel to compact an existing datasource for the first time. See <a href="/docs/26.0.0/data-management/compaction.html">Compaction</a> for additional details and use cases.</p>
<p>This topic guides you through setting up automatic compaction for your Druid cluster. See the <a href="#examples">examples</a> for common use cases for automatic compaction.</p>
<h2><a class="anchor" aria-hidden="true" id="enable-automatic-compaction"></a><a href="#enable-automatic-compaction" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 1 [...]
<p>You can enable automatic compaction for a datasource using the web console or programmatically via an API.
-This process differs for manual compaction tasks, which can be submitted from the <a href="/docs/latest/operations/web-console.html">Tasks view of the web console</a> or the <a href="/docs/latest/operations/api-reference.html#tasks">Tasks API</a>.</p>
+This process differs for manual compaction tasks, which can be submitted from the <a href="/docs/26.0.0/operations/web-console.html">Tasks view of the web console</a> or the <a href="/docs/26.0.0/operations/api-reference.html#tasks">Tasks API</a>.</p>
<h3><a class="anchor" aria-hidden="true" id="web-console"></a><a href="#web-console" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42 [...]
<p>Use the web console to enable automatic compaction for a datasource as follows.</p>
<ol>
@@ -103,10 +103,10 @@ This process differs for manual compaction tasks, which can be submitted from th
<img src="../assets/compaction-config.png" alt="Compaction config in web console"></p>
<p>To disable auto-compaction for a datasource, click <strong>Delete</strong> from the <strong>Compaction config</strong> dialog. Druid does not retain your auto-compaction configuration.</p>
<h3><a class="anchor" aria-hidden="true" id="compaction-configuration-api"></a><a href="#compaction-configuration-api" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 [...]
-<p>Use the <a href="/docs/latest/operations/api-reference.html#automatic-compaction-status">Coordinator API</a> to configure automatic compaction.
+<p>Use the <a href="/docs/26.0.0/operations/api-reference.html#automatic-compaction-status">Coordinator API</a> to configure automatic compaction.
To enable auto-compaction for a datasource, create a JSON object with the desired auto-compaction settings.
See <a href="#configure-automatic-compaction">Configure automatic compaction</a> for the syntax of an auto-compaction spec.
-Send the JSON object as a payload in a <a href="/docs/latest/operations/api-reference.html#automatic-compaction-configuration"><code>POST</code> request</a> to <code>/druid/coordinator/v1/config/compaction</code>.
+Send the JSON object as a payload in a <a href="/docs/26.0.0/operations/api-reference.html#automatic-compaction-configuration"><code>POST</code> request</a> to <code>/druid/coordinator/v1/config/compaction</code>.
The following example configures auto-compaction for the <code>wikipedia</code> datasource:</p>
<pre><code class="hljs css language-sh">curl --location --request POST <span class="hljs-string">'http://localhost:8081/druid/coordinator/v1/config/compaction'</span> \
--header <span class="hljs-string">'Content-Type: application/json'</span> \
@@ -117,7 +117,7 @@ The following example configures auto-compaction for the <code>wikipedia</code>
}
}'</span>
</code></pre>
-<p>To disable auto-compaction for a datasource, send a <a href="/docs/latest/operations/api-reference.html#automatic-compaction-configuration"><code>DELETE</code> request</a> to <code>/druid/coordinator/v1/config/compaction/{dataSource}</code>. Replace <code>{dataSource}</code> with the name of the datasource for which to disable auto-compaction. For example:</p>
+<p>To disable auto-compaction for a datasource, send a <a href="/docs/26.0.0/operations/api-reference.html#automatic-compaction-configuration"><code>DELETE</code> request</a> to <code>/druid/coordinator/v1/config/compaction/{dataSource}</code>. Replace <code>{dataSource}</code> with the name of the datasource for which to disable auto-compaction. For example:</p>
<pre><code class="hljs css language-sh">curl --location --request DELETE <span class="hljs-string">'http://localhost:8081/druid/coordinator/v1/config/compaction/wikipedia'</span>
</code></pre>
<h2><a class="anchor" aria-hidden="true" id="configure-automatic-compaction"></a><a href="#configure-automatic-compaction" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 1 [...]
@@ -136,7 +136,7 @@ The automatic compaction system uses the following syntax:</p>
<span class="hljs-attr">"taskContext"</span>: <task context>
}
</code></pre>
-<p>Most fields in the auto-compaction configuration correlate to a typical <a href="/docs/latest/ingestion/ingestion-spec.html">Druid ingestion spec</a>.
+<p>Most fields in the auto-compaction configuration correlate to a typical <a href="/docs/26.0.0/ingestion/ingestion-spec.html">Druid ingestion spec</a>.
The following properties only apply to auto-compaction:</p>
<ul>
<li><code>skipOffsetFromLatest</code></li>
@@ -151,20 +151,20 @@ The following properties are automatically set by the Coordinator:</p>
<li><code>id</code>: Generated using the task type, datasource name, interval, and timestamp. The task ID is prefixed with <code>coordinator-issued</code>.</li>
<li><code>context</code>: Set according to the user-provided <code>taskContext</code>.</li>
</ul>
-<p>Compaction tasks fetch all <a href="/docs/latest/data-management/compaction.html#compaction-io-configuration">relevant segments</a> prior to launching any subtasks,
+<p>Compaction tasks fetch all <a href="/docs/26.0.0/data-management/compaction.html#compaction-io-configuration">relevant segments</a> prior to launching any subtasks,
<em>unless</em> the following items are all set. It is strongly recommended to set all of these items to maximize performance
and minimize disk usage of the <code>compact</code> tasks launched by auto-compaction:</p>
<ul>
-<li><a href="/docs/latest/data-management/compaction.html#compaction-granularity-spec"><code>granularitySpec</code></a>. All three values must be set to non-null values: <code>segmentGranularity</code>, <code>queryGranularity</code>, and <code>rollup</code>.</li>
-<li><a href="/docs/latest/data-management/compaction.html#compaction-dimensions-spec"><code>dimensionsSpec</code></a></li>
+<li><a href="/docs/26.0.0/data-management/compaction.html#compaction-granularity-spec"><code>granularitySpec</code></a>. All three values must be set to non-null values: <code>segmentGranularity</code>, <code>queryGranularity</code>, and <code>rollup</code>.</li>
+<li><a href="/docs/26.0.0/data-management/compaction.html#compaction-dimensions-spec"><code>dimensionsSpec</code></a></li>
<li><code>metricsSpec</code></li>
</ul>
-<p>For more details on each of the specs in an auto-compaction configuration, see <a href="/docs/latest/configuration/index.html#automatic-compaction-dynamic-configuration">Automatic compaction dynamic configuration</a>.</p>
+<p>For more details on each of the specs in an auto-compaction configuration, see <a href="/docs/26.0.0/configuration/index.html#automatic-compaction-dynamic-configuration">Automatic compaction dynamic configuration</a>.</p>
<h3><a class="anchor" aria-hidden="true" id="avoid-conflicts-with-ingestion"></a><a href="#avoid-conflicts-with-ingestion" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 1 [...]
<p>Compaction tasks may be interrupted when they interfere with ingestion. For example, this occurs when an ingestion task needs to write data to a segment for a time interval locked for compaction. If there are continuous failures that prevent compaction from making progress, consider one of the following strategies:</p>
<ul>
<li>Set <code>skipOffsetFromLatest</code> to reduce the chance of conflicts between ingestion and compaction. See more details in this section below.</li>
-<li>Increase the priority value of compaction tasks relative to ingestion tasks. Only recommended for advanced users. This approach can cause ingestion jobs to fail or lag. To change the priority of compaction tasks, set <code>taskPriority</code> to the desired priority value in the auto-compaction configuration. For details on the priority values of different task types, see <a href="/docs/latest/ingestion/tasks.html#lock-priority">Lock priority</a>.</li>
+<li>Increase the priority value of compaction tasks relative to ingestion tasks. Only recommended for advanced users. This approach can cause ingestion jobs to fail or lag. To change the priority of compaction tasks, set <code>taskPriority</code> to the desired priority value in the auto-compaction configuration. For details on the priority values of different task types, see <a href="/docs/26.0.0/ingestion/tasks.html#lock-priority">Lock priority</a>.</li>
</ul>
<p>The Coordinator compacts segments from newest to oldest. In the auto-compaction configuration, you can set a time period, relative to the end time of the most recent segment, for segments that should not be compacted. Assign this value to <code>skipOffsetFromLatest</code>. Note that this offset is not relative to the current time but to the latest segment time. For example, if you want to skip over segments from five days prior to the end time of the most recent segment, assign <code> [...]
<p>To set <code>skipOffsetFromLatest</code>, consider how frequently you expect the stream to receive late arriving data. If your stream only occasionally receives late arriving data, the auto-compaction system robustly compacts your data even though data is ingested outside the <code>skipOffsetFromLatest</code> window. For most realtime streaming ingestion use cases, it is reasonable to set <code>skipOffsetFromLatest</code> to a few hours or a day.</p>
@@ -177,13 +177,13 @@ The following example shows how to create a duty group named <code>compaction</c
<span class="hljs-attr">druid.coordinator.compaction.period</span>=PT60S
</code></pre>
<h2><a class="anchor" aria-hidden="true" id="view-automatic-compaction-statistics"></a><a href="#view-automatic-compaction-statistics" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 [...]
-<p>After the Coordinator has initiated auto-compaction, you can view compaction statistics for the datasource, including the number of bytes, segments, and intervals already compacted and those awaiting compaction. The Coordinator also reports the total bytes, segments, and intervals not eligible for compaction in accordance with its <a href="/docs/latest/design/coordinator.html#segment-search-policy-in-automatic-compaction">segment search policy</a>.</p>
+<p>After the Coordinator has initiated auto-compaction, you can view compaction statistics for the datasource, including the number of bytes, segments, and intervals already compacted and those awaiting compaction. The Coordinator also reports the total bytes, segments, and intervals not eligible for compaction in accordance with its <a href="/docs/26.0.0/design/coordinator.html#segment-search-policy-in-automatic-compaction">segment search policy</a>.</p>
<p>In the web console, the Datasources view displays auto-compaction statistics. The Tasks view shows the task information for compaction tasks that were triggered by the automatic compaction system.</p>
-<p>To get statistics by API, send a <a href="/docs/latest/operations/api-reference.html#automatic-compaction-status"><code>GET</code> request</a> to <code>/druid/coordinator/v1/compaction/status</code>. To filter the results to a particular datasource, pass the datasource name as a query parameter to the request—for example, <code>/druid/coordinator/v1/compaction/status?dataSource=wikipedia</code>.</p>
+<p>To get statistics by API, send a <a href="/docs/26.0.0/operations/api-reference.html#automatic-compaction-status"><code>GET</code> request</a> to <code>/druid/coordinator/v1/compaction/status</code>. To filter the results to a particular datasource, pass the datasource name as a query parameter to the request—for example, <code>/druid/coordinator/v1/compaction/status?dataSource=wikipedia</code>.</p>
<h2><a class="anchor" aria-hidden="true" id="examples"></a><a href="#examples" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 [...]
-<p>The following examples demonstrate potential use cases in which auto-compaction may improve your Druid performance. See more details in <a href="/docs/latest/data-management/compaction.html#compaction-strategies">Compaction strategies</a>. The examples in this section do not change the underlying data.</p>
+<p>The following examples demonstrate potential use cases in which auto-compaction may improve your Druid performance. See more details in <a href="/docs/26.0.0/data-management/compaction.html#compaction-strategies">Compaction strategies</a>. The examples in this section do not change the underlying data.</p>
<h3><a class="anchor" aria-hidden="true" id="change-segment-granularity"></a><a href="#change-segment-granularity" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H [...]
-<p>You have a stream set up to ingest data with <code>HOUR</code> segment granularity into the <code>wikistream</code> datasource. You notice that your Druid segments are smaller than the <a href="/docs/latest/operations/segment-optimization.html">recommended segment size</a> of 5 million rows per segment. You wish to automatically compact segments to <code>DAY</code> granularity while leaving the latest week of data <em>not</em> compacted because your stream consistently receives data w [...]
+<p>You have a stream set up to ingest data with <code>HOUR</code> segment granularity into the <code>wikistream</code> datasource. You notice that your Druid segments are smaller than the <a href="/docs/26.0.0/operations/segment-optimization.html">recommended segment size</a> of 5 million rows per segment. You wish to automatically compact segments to <code>DAY</code> granularity while leaving the latest week of data <em>not</em> compacted because your stream consistently receives data w [...]
<p>The following auto-compaction configuration compacts existing <code>HOUR</code> segments into <code>DAY</code> segments while leaving the latest week of data not compacted:</p>
<pre><code class="hljs css language-json">{
<span class="hljs-attr">"dataSource"</span>: <span class="hljs-string">"wikistream"</span>,
@@ -197,7 +197,7 @@ The following example shows how to create a duty group named <code>compaction</c
<p>Auto-compaction skips datasources containing ALL granularity segments when the target granularity is different.</p>
</blockquote>
<h3><a class="anchor" aria-hidden="true" id="update-partitioning-scheme"></a><a href="#update-partitioning-scheme" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H [...]
-<p>For your <code>wikipedia</code> datasource, you want to optimize segment access when regularly ingesting data without compromising compute time when querying the data. Your ingestion spec for batch append uses <a href="/docs/latest/ingestion/native-batch.html#dynamic-partitioning">dynamic partitioning</a> to optimize for write-time operations, while your stream ingestion partitioning is configured by the stream service. You want to implement auto-compaction to reorganize the data with [...]
+<p>For your <code>wikipedia</code> datasource, you want to optimize segment access when regularly ingesting data without compromising compute time when querying the data. Your ingestion spec for batch append uses <a href="/docs/26.0.0/ingestion/native-batch.html#dynamic-partitioning">dynamic partitioning</a> to optimize for write-time operations, while your stream ingestion partitioning is configured by the stream service. You want to implement auto-compaction to reorganize the data with [...]
<p>The following auto-compaction configuration compacts updates the <code>wikipedia</code> segments to use multi-dimension range partitioning:</p>
<pre><code class="hljs css language-json">{
<span class="hljs-attr">"dataSource"</span>: <span class="hljs-string">"wikipedia"</span>,
@@ -217,11 +217,11 @@ The following example shows how to create a duty group named <code>compaction</c
<h2><a class="anchor" aria-hidden="true" id="learn-more"></a><a href="#learn-more" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1 [...]
<p>See the following topics for more information:</p>
<ul>
-<li><a href="/docs/latest/data-management/compaction.html">Compaction</a> for an overview of compaction and how to set up manual compaction in Druid.</li>
-<li><a href="/docs/latest/operations/segment-optimization.html">Segment optimization</a> for guidance on evaluating and optimizing Druid segment size.</li>
-<li><a href="/docs/latest/design/coordinator.html#automatic-compaction">Coordinator process</a> for details on how the Coordinator plans compaction tasks.</li>
+<li><a href="/docs/26.0.0/data-management/compaction.html">Compaction</a> for an overview of compaction and how to set up manual compaction in Druid.</li>
+<li><a href="/docs/26.0.0/operations/segment-optimization.html">Segment optimization</a> for guidance on evaluating and optimizing Druid segment size.</li>
+<li><a href="/docs/26.0.0/design/coordinator.html#automatic-compaction">Coordinator process</a> for details on how the Coordinator plans compaction tasks.</li>
</ul>
-</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/latest/data-management/compaction.html"><span class="arrow-prev">← </span><span>Compaction</span></a><a class="docs-next button" href="/docs/latest/querying/sql.html"><span>Overview and syntax</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#enable-automatic-compaction">Enable automatic compaction</a><ul class="toc-head [...]
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/data-management/compaction.html"><span class="arrow-prev">← </span><span>Compaction</span></a><a class="docs-next button" href="/docs/26.0.0/querying/sql.html"><span>Overview and syntax</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#enable-automatic-compaction">Enable automatic compaction</a><ul class="toc-head [...]
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@@ -238,6 +238,6 @@ The following example shows how to create a duty group named <code>compaction</c
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diff --git a/docs/latest/data-management/compaction.html b/docs/26.0.0/data-management/compaction.html
similarity index 58%
copy from docs/latest/data-management/compaction.html
copy to docs/26.0.0/data-management/compaction.html
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--- a/docs/latest/data-management/compaction.html
+++ b/docs/26.0.0/data-management/compaction.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Compaction · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/data-management/compaction.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Defines compaction and automatic compaction (auto-compaction or autocompaction) for segme [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Compaction · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/data-management/compaction.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Defines compaction and automatic compaction (auto-compaction or autocompaction) for segme [...]
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@@ -82,7 +82,7 @@ Query performance in Apache Druid depends on optimally sized segments. Compactio
<p>There are several cases to consider compaction for segment optimization:</p>
<ul>
<li>With streaming ingestion, data can arrive out of chronological order creating many small segments.</li>
-<li>If you append data using <code>appendToExisting</code> for <a href="/docs/latest/ingestion/native-batch.html">native batch</a> ingestion creating suboptimal segments.</li>
+<li>If you append data using <code>appendToExisting</code> for <a href="/docs/26.0.0/ingestion/native-batch.html">native batch</a> ingestion creating suboptimal segments.</li>
<li>When you use <code>index_parallel</code> for parallel batch indexing and the parallel ingestion tasks create many small segments.</li>
<li>When a misconfigured ingestion task creates oversized segments.</li>
</ul>
@@ -92,12 +92,12 @@ Query performance in Apache Druid depends on optimally sized segments. Compactio
<li>If you don't need fine-grained granularity for older data, you can use compaction to change older segments to a coarser query granularity. For example, from <code>minute</code> to <code>hour</code> or <code>hour</code> to <code>day</code>. This reduces the storage space required for older data.</li>
<li>You can change the dimension order to improve sorting and reduce segment size.</li>
<li>You can remove unused columns in compaction or implement an aggregation metric for older data.</li>
-<li>You can change segment rollup from dynamic partitioning with best-effort rollup to hash or range partitioning with perfect rollup. For more information on rollup, see <a href="/docs/latest/ingestion/rollup.html#perfect-rollup-vs-best-effort-rollup">perfect vs best-effort rollup</a>.</li>
+<li>You can change segment rollup from dynamic partitioning with best-effort rollup to hash or range partitioning with perfect rollup. For more information on rollup, see <a href="/docs/26.0.0/ingestion/rollup.html#perfect-rollup-vs-best-effort-rollup">perfect vs best-effort rollup</a>.</li>
</ul>
-<p>Compaction does not improve performance in all situations. For example, if you rewrite your data with each ingestion task, you don't need to use compaction. See <a href="/docs/latest/operations/segment-optimization.html">Segment optimization</a> for additional guidance to determine if compaction will help in your environment.</p>
+<p>Compaction does not improve performance in all situations. For example, if you rewrite your data with each ingestion task, you don't need to use compaction. See <a href="/docs/26.0.0/operations/segment-optimization.html">Segment optimization</a> for additional guidance to determine if compaction will help in your environment.</p>
<h2><a class="anchor" aria-hidden="true" id="types-of-compaction"></a><a href="#types-of-compaction" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.2 [...]
-<p>You can configure the Druid Coordinator to perform automatic compaction, also called auto-compaction, for a datasource. Using its <a href="/docs/latest/design/coordinator.html#segment-search-policy-in-automatic-compaction">segment search policy</a>, the Coordinator periodically identifies segments for compaction starting from newest to oldest. When the Coordinator discovers segments that have not been compacted or segments that were compacted with a different or changed spec, it submi [...]
-<p>Automatic compaction works in most use cases and should be your first option. To learn more, see <a href="/docs/latest/data-management/automatic-compaction.html">Automatic compaction</a>.</p>
+<p>You can configure the Druid Coordinator to perform automatic compaction, also called auto-compaction, for a datasource. Using its <a href="/docs/26.0.0/design/coordinator.html#segment-search-policy-in-automatic-compaction">segment search policy</a>, the Coordinator periodically identifies segments for compaction starting from newest to oldest. When the Coordinator discovers segments that have not been compacted or segments that were compacted with a different or changed spec, it submi [...]
+<p>Automatic compaction works in most use cases and should be your first option. To learn more, see <a href="/docs/26.0.0/data-management/automatic-compaction.html">Automatic compaction</a>.</p>
<p>In cases where you require more control over compaction, you can manually submit compaction tasks. For example:</p>
<ul>
<li>Automatic compaction is running into the limit of task slots available to it, so tasks are waiting for previous automatic compaction tasks to complete. Manual compaction can use all available task slots, therefore you can complete compaction more quickly by submitting more concurrent tasks for more intervals.</li>
@@ -106,13 +106,13 @@ Query performance in Apache Druid depends on optimally sized segments. Compactio
<p>See <a href="#setting-up-manual-compaction">Setting up a manual compaction task</a> for more about manual compaction tasks.</p>
<h2><a class="anchor" aria-hidden="true" id="data-handling-with-compaction"></a><a href="#data-handling-with-compaction" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 [...]
<p>During compaction, Druid overwrites the original set of segments with the compacted set. Druid also locks the segments for the time interval being compacted to ensure data consistency. By default, compaction tasks do not modify the underlying data. You can configure the compaction task to change the query granularity or add or remove dimensions in the compaction task. This means that the only changes to query results should be the result of intentional, not automatic, changes.</p>
-<p>You can set <code>dropExisting</code> in <code>ioConfig</code> to "true" in the compaction task to configure Druid to replace all existing segments fully contained by the interval. See the suggestion for reindexing with finer granularity under <a href="/docs/latest/ingestion/native-batch.html#implementation-considerations">Implementation considerations</a> for an example.</p>
+<p>You can set <code>dropExisting</code> in <code>ioConfig</code> to "true" in the compaction task to configure Druid to replace all existing segments fully contained by the interval. See the suggestion for reindexing with finer granularity under <a href="/docs/26.0.0/ingestion/native-batch.html#implementation-considerations">Implementation considerations</a> for an example.</p>
<blockquote>
<p>WARNING: <code>dropExisting</code> in <code>ioConfig</code> is a beta feature.</p>
</blockquote>
<p>If an ingestion task needs to write data to a segment for a time interval locked for compaction, by default the ingestion task supersedes the compaction task and the compaction task fails without finishing. For manual compaction tasks, you can adjust the input spec interval to avoid conflicts between ingestion and compaction. For automatic compaction, you can set the <code>skipOffsetFromLatest</code> key to adjust the auto-compaction starting point from the current time to reduce the [...]
Another option is to set the compaction task to higher priority than the ingestion task.
-For more information, see <a href="/docs/latest/data-management/automatic-compaction.html#avoid-conflicts-with-ingestion">Avoid conflicts with ingestion</a>.</p>
+For more information, see <a href="/docs/26.0.0/data-management/automatic-compaction.html#avoid-conflicts-with-ingestion">Avoid conflicts with ingestion</a>.</p>
<h3><a class="anchor" aria-hidden="true" id="segment-granularity-handling"></a><a href="#segment-granularity-handling" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 [...]
<p>Unless you modify the segment granularity in <a href="#compaction-granularity-spec"><code>granularitySpec</code></a>, Druid attempts to retain the granularity for the compacted segments. When segments have different segment granularities with no overlap in interval Druid creates a separate compaction task for each to retain the segment granularity in the compacted segment.</p>
<p>If segments have different segment granularities before compaction but there is some overlap in interval, Druid attempts find start and end of the overlapping interval and uses the closest segment granularity level for the compacted segment.</p>
@@ -124,13 +124,13 @@ For more information, see <a href="/docs/latest/data-management/automatic-compac
</blockquote>
<p>If you configure query granularity in compaction to go from a finer granularity like month to a coarser query granularity like year, then Druid overshadows the original segment with coarser granularity. Because the new segments have a coarser granularity, running a kill task to remove the overshadowed segments for those intervals will cause you to permanently lose the finer granularity data.</p>
<h3><a class="anchor" aria-hidden="true" id="dimension-handling"></a><a href="#dimension-handling" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22- [...]
-<p>Apache Druid supports schema changes. Therefore, dimensions can be different across segments even if they are a part of the same datasource. See <a href="/docs/latest/design/segments.html#segments-with-different-schemas">Segments with different schemas</a>. If the input segments have different dimensions, the resulting compacted segment includes all dimensions of the input segments.</p>
+<p>Apache Druid supports schema changes. Therefore, dimensions can be different across segments even if they are a part of the same datasource. See <a href="/docs/26.0.0/design/segments.html#segments-with-different-schemas">Segments with different schemas</a>. If the input segments have different dimensions, the resulting compacted segment includes all dimensions of the input segments.</p>
<p>Even when the input segments have the same set of dimensions, the dimension order or the data type of dimensions can be different. The dimensions of recent segments precede that of old segments in terms of data types and the ordering because more recent segments are more likely to have the preferred order and data types.</p>
<p>If you want to control dimension ordering or ensure specific values for dimension types, you can configure a custom <code>dimensionsSpec</code> in the compaction task spec.</p>
<h3><a class="anchor" aria-hidden="true" id="rollup"></a><a href="#rollup" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2. [...]
<p>Druid only rolls up the output segment when <code>rollup</code> is set for all input segments.
-See <a href="/docs/latest/ingestion/rollup.html">Roll-up</a> for more details.
-You can check that your segments are rolled up or not by using <a href="/docs/latest/querying/segmentmetadataquery.html#analysistypes">Segment Metadata Queries</a>.</p>
+See <a href="/docs/26.0.0/ingestion/rollup.html">Roll-up</a> for more details.
+You can check that your segments are rolled up or not by using <a href="/docs/26.0.0/querying/segmentmetadataquery.html#analysistypes">Segment Metadata Queries</a>.</p>
<h2><a class="anchor" aria-hidden="true" id="setting-up-manual-compaction"></a><a href="#setting-up-manual-compaction" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 [...]
<p>To perform a manual compaction, you submit a compaction task. Compaction tasks merge all segments for the defined interval according to the following syntax:</p>
<pre><code class="hljs css language-json">{
@@ -159,19 +159,19 @@ You can check that your segments are rolled up or not by using <a href="/docs/la
<tr><td><code>transformSpec</code></td><td>When set, the compaction task uses the specified <code>transformSpec</code> rather than using <code>null</code>. See <a href="#compaction-transform-spec">Compaction transformSpec</a> for details.</td><td>No</td></tr>
<tr><td><code>metricsSpec</code></td><td>When set, the compaction task uses the specified <code>metricsSpec</code> rather than generating one from existing segments.</td><td>No</td></tr>
<tr><td><code>segmentGranularity</code></td><td>Deprecated. Use <code>granularitySpec</code>.</td><td>No</td></tr>
-<tr><td><code>tuningConfig</code></td><td><a href="/docs/latest/ingestion/native-batch.html#tuningconfig">Tuning configuration</a> for parallel indexing. <code>awaitSegmentAvailabilityTimeoutMillis</code> value is not supported for compaction tasks. Leave this parameter at the default value, 0.</td><td>No</td></tr>
+<tr><td><code>tuningConfig</code></td><td><a href="/docs/26.0.0/ingestion/native-batch.html#tuningconfig">Tuning configuration</a> for parallel indexing. <code>awaitSegmentAvailabilityTimeoutMillis</code> value is not supported for compaction tasks. Leave this parameter at the default value, 0.</td><td>No</td></tr>
<tr><td><code>granularitySpec</code></td><td>When set, the compaction task uses the specified <code>granularitySpec</code> rather than generating one from existing segments. See <a href="#compaction-granularity-spec">Compaction <code>granularitySpec</code></a> for details.</td><td>No</td></tr>
-<tr><td><code>context</code></td><td><a href="/docs/latest/ingestion/tasks.html#context">Task context</a></td><td>No</td></tr>
+<tr><td><code>context</code></td><td><a href="/docs/26.0.0/ingestion/tasks.html#context">Task context</a></td><td>No</td></tr>
</tbody>
</table>
<blockquote>
<p>Note: Use <code>granularitySpec</code> over <code>segmentGranularity</code> and only set one of these values. If you specify different values for these in the same compaction spec, the task fails.</p>
</blockquote>
-<p>To control the number of result segments per time chunk, you can set <a href="/docs/latest/ingestion/native-batch.html#partitionsspec"><code>maxRowsPerSegment</code></a> or <a href="/docs/latest/ingestion/native-batch.html#tuningconfig"><code>numShards</code></a>.</p>
+<p>To control the number of result segments per time chunk, you can set <a href="/docs/26.0.0/ingestion/native-batch.html#partitionsspec"><code>maxRowsPerSegment</code></a> or <a href="/docs/26.0.0/ingestion/native-batch.html#tuningconfig"><code>numShards</code></a>.</p>
<blockquote>
<p>You can run multiple compaction tasks in parallel. For example, if you want to compact the data for a year, you are not limited to running a single task for the entire year. You can run 12 compaction tasks with month-long intervals.</p>
</blockquote>
-<p>A compaction task internally generates an <code>index</code> or <code>index_parallel</code> task spec for performing compaction work with some fixed parameters. For example, its <code>inputSource</code> is always the <a href="/docs/latest/ingestion/native-batch-input-sources.html"><code>druid</code> input source</a>, and <code>dimensionsSpec</code> and <code>metricsSpec</code> include all dimensions and metrics of the input segments by default.</p>
+<p>A compaction task internally generates an <code>index</code> or <code>index_parallel</code> task spec for performing compaction work with some fixed parameters. For example, its <code>inputSource</code> is always the <a href="/docs/26.0.0/ingestion/native-batch-input-sources.html"><code>druid</code> input source</a>, and <code>dimensionsSpec</code> and <code>metricsSpec</code> include all dimensions and metrics of the input segments by default.</p>
<p>Compaction tasks fetch all <a href="#compaction-io-configuration">relevant segments</a> prior to launching any subtasks, <em>unless</em> the following items are all set. It is strongly recommended to set all of these items to maximize performance and minimize disk usage of the <code>compact</code> task:</p>
<ul>
<li><a href="#compaction-granularity-spec"><code>granularitySpec</code></a>. All three values must be set to non-null values: <code>segmentGranularity</code>, <code>queryGranularity</code>, and <code>rollup</code>.</li>
@@ -253,7 +253,7 @@ If you don't specify <code>granularitySpec</code>, Druid retains the original se
<tr><th>Field</th><th>Description</th><th>Required</th></tr>
</thead>
<tbody>
-<tr><td><code>filter</code></td><td>The <code>filter</code> conditionally filters input rows during compaction. Only rows that pass the filter will be included in the compacted segments. Any of Druid's standard <a href="/docs/latest/querying/filters.html">query filters</a> can be used. Defaults to 'null', which will not filter any row.</td><td>No</td></tr>
+<tr><td><code>filter</code></td><td>The <code>filter</code> conditionally filters input rows during compaction. Only rows that pass the filter will be included in the compacted segments. Any of Druid's standard <a href="/docs/26.0.0/querying/filters.html">query filters</a> can be used. Defaults to 'null', which will not filter any row.</td><td>No</td></tr>
</tbody>
</table>
<h3><a class="anchor" aria-hidden="true" id="compaction-granularity-spec"></a><a href="#compaction-granularity-spec" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 1 [...]
@@ -262,18 +262,18 @@ If you don't specify <code>granularitySpec</code>, Druid retains the original se
<tr><th>Field</th><th>Description</th><th>Required</th></tr>
</thead>
<tbody>
-<tr><td><code>segmentGranularity</code></td><td>Time chunking period for the segment granularity. Defaults to 'null', which preserves the original segment granularity. Accepts all <a href="/docs/latest/querying/granularities.html">Query granularity</a> values.</td><td>No</td></tr>
-<tr><td><code>queryGranularity</code></td><td>The resolution of timestamp storage within each segment. Defaults to 'null', which preserves the original query granularity. Accepts all <a href="/docs/latest/querying/granularities.html">Query granularity</a> values.</td><td>No</td></tr>
+<tr><td><code>segmentGranularity</code></td><td>Time chunking period for the segment granularity. Defaults to 'null', which preserves the original segment granularity. Accepts all <a href="/docs/26.0.0/querying/granularities.html">Query granularity</a> values.</td><td>No</td></tr>
+<tr><td><code>queryGranularity</code></td><td>The resolution of timestamp storage within each segment. Defaults to 'null', which preserves the original query granularity. Accepts all <a href="/docs/26.0.0/querying/granularities.html">Query granularity</a> values.</td><td>No</td></tr>
<tr><td><code>rollup</code></td><td>Enables compaction-time rollup. To preserve the original setting, keep the default value. To enable compaction-time rollup, set the value to <code>true</code>. Once the data is rolled up, you can no longer recover individual records.</td><td>No</td></tr>
</tbody>
</table>
<h2><a class="anchor" aria-hidden="true" id="learn-more"></a><a href="#learn-more" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1 [...]
<p>See the following topics for more information:</p>
<ul>
-<li><a href="/docs/latest/operations/segment-optimization.html">Segment optimization</a> for guidance to determine if compaction will help in your case.</li>
-<li><a href="/docs/latest/data-management/automatic-compaction.html">Automatic compaction</a> for how to enable and configure automatic compaction.</li>
+<li><a href="/docs/26.0.0/operations/segment-optimization.html">Segment optimization</a> for guidance to determine if compaction will help in your case.</li>
+<li><a href="/docs/26.0.0/data-management/automatic-compaction.html">Automatic compaction</a> for how to enable and configure automatic compaction.</li>
</ul>
-</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/latest/data-management/schema-changes.html"><span class="arrow-prev">← </span><span>Schema changes</span></a><a class="docs-next button" href="/docs/latest/data-management/automatic-compaction.html"><span>Automatic compaction</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#compaction-strategies">Compaction strategies</ [...]
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/data-management/schema-changes.html"><span class="arrow-prev">← </span><span>Schema changes</span></a><a class="docs-next button" href="/docs/26.0.0/data-management/automatic-compaction.html"><span>Automatic compaction</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#compaction-strategies">Compaction strategies</ [...]
document.addEventListener('keyup', function(e) {
if (e.target !== document.body) {
return;
@@ -290,6 +290,6 @@ If you don't specify <code>granularitySpec</code>, Druid retains the original se
apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
indexName: 'apache_druid',
inputSelector: '#search_input_react',
- algoliaOptions: {"facetFilters":["language:en","version:25.0.0"]}
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
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</script></body></html>
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diff --git a/docs/26.0.0/data-management/delete.html b/docs/26.0.0/data-management/delete.html
new file mode 100644
index 00000000..798d2b03
--- /dev/null
+++ b/docs/26.0.0/data-management/delete.html
@@ -0,0 +1,156 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Data deletion · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/data-management/delete.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" con [...]
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+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
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+ var checkActiveCategory = true;
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+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/data-management/delete.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Data deletion</h1></header><article><div><span><!--
+ ~ 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
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+ ~
+ ~ 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.
+ -->
+<h2><a class="anchor" aria-hidden="true" id="by-time-range-manually"></a><a href="#by-time-range-manually" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0 [...]
+<p>Apache Druid stores data <a href="/docs/26.0.0/design/architecture.html#datasources-and-segments">partitioned by time chunk</a> and supports
+deleting data for time chunks by dropping segments. This is a fast, metadata-only operation.</p>
+<p>Deletion by time range happens in two steps:</p>
+<ol>
+<li>Segments to be deleted must first be marked as <a href="/docs/26.0.0/design/architecture.html#segment-lifecycle">"unused"</a>. This can
+happen when a segment is dropped by a <a href="/docs/26.0.0/operations/rule-configuration.html">drop rule</a> or when you manually mark a
+segment unused through the Coordinator API or web console. This is a soft delete: the data is not available for
+querying, but the segment files remains in deep storage, and the segment records remains in the metadata store.</li>
+<li>Once a segment is marked "unused", you can use a <a href="#kill-task"><code>kill</code> task</a> to permanently delete the segment file from
+deep storage and remove its record from the metadata store. This is a hard delete: the data is unrecoverable unless
+you have a backup.</li>
+</ol>
+<p>For documentation on disabling segments using the Coordinator API, see the
+<a href="/docs/26.0.0/operations/api-reference.html#coordinator-datasources">Coordinator API reference</a>.</p>
+<p>A data deletion tutorial is available at <a href="/docs/26.0.0/tutorials/tutorial-delete-data.html">Tutorial: Deleting data</a>.</p>
+<h2><a class="anchor" aria-hidden="true" id="by-time-range-automatically"></a><a href="#by-time-range-automatically" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 1 [...]
+<p>Druid supports <a href="/docs/26.0.0/operations/rule-configuration.html">load and drop rules</a>, which are used to define intervals of time
+where data should be preserved, and intervals where data should be discarded. Data that falls under a drop rule is
+marked unused, in the same manner as if you <a href="#by-time-range-manually">manually mark that time range unused</a>. This is a
+fast, metadata-only operation.</p>
+<p>Data that is dropped in this way is marked unused, but remains in deep storage. To permanently delete it, use a
+<a href="#kill-task"><code>kill</code> task</a>.</p>
+<h2><a class="anchor" aria-hidden="true" id="specific-records"></a><a href="#specific-records" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2. [...]
+<p>Druid supports deleting specific records using <a href="/docs/26.0.0/data-management/update.html#reindex">reindexing</a> with a filter. The filter specifies which
+data remains after reindexing, so it must be the inverse of the data you want to delete. Because segments must be
+rewritten to delete data in this way, it can be a time-consuming operation.</p>
+<p>For example, to delete records where <code>userName</code> is <code>'bob'</code> with native batch indexing, use a
+<a href="/docs/26.0.0/ingestion/ingestion-spec.html#transformspec"><code>transformSpec</code></a> with filter <code>{"type": "not", "field": {"type": "selector", "dimension": "userName", "value": "bob"}}</code>.</p>
+<p>To delete the same records using SQL, use <a href="/docs/26.0.0/multi-stage-query/concepts.html#replace">REPLACE</a> with <code>WHERE userName <> 'bob'</code>.</p>
+<p>To reindex using <a href="/docs/26.0.0/ingestion/native-batch.html">native batch</a>, use the <a href="/docs/26.0.0/ingestion/native-batch-input-sources.html#druid-input-source"><code>druid</code> input
+source</a>. If needed,
+<a href="/docs/26.0.0/ingestion/ingestion-spec.html#transformspec"><code>transformSpec</code></a> can be used to filter or modify data during the
+reindexing job. To reindex with SQL, use <a href="/docs/26.0.0/multi-stage-query/reference.html#replace"><code>REPLACE <table> OVERWRITE</code></a>
+with <code>SELECT ... FROM <table></code>. (Druid does not have <code>UPDATE</code> or <code>ALTER TABLE</code> statements.) Any SQL SELECT query can be
+used to filter, modify, or enrich the data during the reindexing job.</p>
+<p>Data that is deleted in this way is marked unused, but remains in deep storage. To permanently delete it, use a <a href="#kill-task"><code>kill</code>
+task</a>.</p>
+<h2><a class="anchor" aria-hidden="true" id="entire-table"></a><a href="#entire-table" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
+<p>Deleting an entire table works the same way as <a href="#by-time-range-manually">deleting part of a table by time range</a>. First,
+mark all segments unused using the Coordinator API or web console. Then, optionally, delete it permanently using a
+<a href="#kill-task"><code>kill</code> task</a>.</p>
+<p><a name="kill-task"></a></p>
+<h2><a class="anchor" aria-hidden="true" id="permanently-kill-task"></a><a href="#permanently-kill-task" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2 [...]
+<p>Data that has been overwritten or soft-deleted still remains as segments that have been marked unused. You can use a
+<code>kill</code> task to permanently delete this data.</p>
+<p>The available grammar is:</p>
+<pre><code class="hljs css language-json">{
+ <span class="hljs-attr">"type"</span>: <span class="hljs-string">"kill"</span>,
+ <span class="hljs-attr">"id"</span>: <task_id>,
+ <span class="hljs-attr">"dataSource"</span>: <task_datasource>,
+ <span class="hljs-attr">"interval"</span> : <all_unused_segments_in_this_interval_will_die!>,
+ <span class="hljs-attr">"context"</span>: <task context>
+}
+</code></pre>
+<p><strong>WARNING:</strong> The <code>kill</code> task permanently removes all information about the affected segments from the metadata store and
+deep storage. This operation cannot be undone.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/data-management/update.html"><span class="arrow-prev">← </span><span>Data updates</span></a><a class="docs-next button" href="/docs/26.0.0/data-management/schema-changes.html"><span>Schema changes</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#by-time-range-manually">By time range, manually</a></li><li><a href= [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
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+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
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+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/data-management/index.html b/docs/26.0.0/data-management/index.html
new file mode 100644
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--- /dev/null
+++ b/docs/26.0.0/data-management/index.html
@@ -0,0 +1,109 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Data management · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/data-management/index.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" co [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/data-management/index.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Data management</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>Apache Druid stores data <a href="/docs/26.0.0/design/architecture.html#datasources-and-segments">partitioned by time chunk</a> in immutable
+files called <a href="/docs/26.0.0/design/segments.html">segments</a>. Data management operations involving replacing, or deleting,
+these segments include:</p>
+<ul>
+<li><a href="/docs/26.0.0/data-management/update.html">Updates</a> to existing data.</li>
+<li><a href="/docs/26.0.0/data-management/delete.html">Deletion</a> of existing data.</li>
+<li><a href="/docs/26.0.0/data-management/schema-changes.html">Schema changes</a> for new and existing data.</li>
+<li><a href="/docs/26.0.0/data-management/compaction.html">Compaction</a> and <a href="/docs/26.0.0/data-management/automatic-compaction.html">automatic compaction</a>, which reindex existing data to
+optimize storage footprint and performance.</li>
+</ul>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/ingestion/faq.html"><span class="arrow-prev">← </span><span>Troubleshooting FAQ</span></a><a class="docs-next button" href="/docs/26.0.0/data-management/update.html"><span>Data updates</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p><a h [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/data-management/schema-changes.html b/docs/26.0.0/data-management/schema-changes.html
new file mode 100644
index 00000000..764a75a6
--- /dev/null
+++ b/docs/26.0.0/data-management/schema-changes.html
@@ -0,0 +1,110 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Schema changes · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/data-management/schema-changes.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:ver [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/data-management/schema-changes.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Schema changes</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<h2><a class="anchor" aria-hidden="true" id="for-new-data"></a><a href="#for-new-data" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
+<p>Apache Druid allows you to provide a new schema for new data without the need to update the schema of any existing data.
+It is sufficient to update your supervisor spec, if using <a href="/docs/26.0.0/ingestion/index.html#streaming">streaming ingestion</a>, or to
+provide the new schema the next time you do a <a href="/docs/26.0.0/ingestion/index.html#batch">batch ingestion</a>. This is made possible by
+the fact that each <a href="/docs/26.0.0/design/architecture.html#datasources-and-segments">segment</a>, at the time it is created, stores a
+copy of its own schema. Druid reconciles all of these individual segment schemas automatically at query time.</p>
+<h2><a class="anchor" aria-hidden="true" id="for-existing-data"></a><a href="#for-existing-data" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2- [...]
+<p>Schema changes are sometimes necessary for existing data. For example, you may want to change the type of a column in
+previously-ingested data, or drop a column entirely. Druid handles this using <a href="/docs/26.0.0/data-management/update.html">reindexing</a>, the same method
+it uses to handle updates of existing data. Reindexing involves rewriting all affected segments and can be a
+time-consuming operation.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/data-management/delete.html"><span class="arrow-prev">← </span><span>Data deletion</span></a><a class="docs-next button" href="/docs/26.0.0/data-management/compaction.html"><span>Compaction</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#for-new-data">For new data</a></li><li><a href="#for-existing-data">For exi [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/data-management/update.html b/docs/26.0.0/data-management/update.html
new file mode 100644
index 00000000..01fff034
--- /dev/null
+++ b/docs/26.0.0/data-management/update.html
@@ -0,0 +1,140 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Data updates · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/data-management/update.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" cont [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/data-management/update.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Data updates</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<h2><a class="anchor" aria-hidden="true" id="overwrite"></a><a href="#overwrite" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.6 [...]
+<p>Apache Druid stores data <a href="/docs/26.0.0/design/architecture.html#datasources-and-segments">partitioned by time chunk</a> and supports
+overwriting existing data using time ranges. Data outside the replacement time range is not touched. Overwriting of
+existing data is done using the same mechanisms as <a href="/docs/26.0.0/ingestion/index.html#batch">batch ingestion</a>.</p>
+<p>For example:</p>
+<ul>
+<li><a href="/docs/26.0.0/ingestion/native-batch.html">Native batch</a> with <code>appendToExisting: false</code>, and <code>intervals</code> set to a specific
+time range, overwrites data for that time range.</li>
+<li><a href="/docs/26.0.0/multi-stage-query/reference.html#replace">SQL <code>REPLACE <table> OVERWRITE [ALL | WHERE ...]</code></a> overwrites data for
+the entire table or for a specified time range.</li>
+</ul>
+<p>In both cases, Druid's atomic update mechanism ensures that queries will flip seamlessly from the old data to the new
+data on a time-chunk-by-time-chunk basis.</p>
+<p>Ingestion and overwriting cannot run concurrently for the same time range of the same datasource. While an overwrite job
+is ongoing for a particular time range of a datasource, new ingestions for that time range are queued up. Ingestions for
+other time ranges proceed as normal. Read-only queries also proceed as normal, using the pre-existing version of the
+data.</p>
+<blockquote>
+<p>Druid does not support single-record updates by primary key.</p>
+</blockquote>
+<h2><a class="anchor" aria-hidden="true" id="reindex"></a><a href="#reindex" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1- [...]
+<p>Reindexing is an <a href="#overwrite">overwrite of existing data</a> where the source of new data is the existing data itself. It
+is used to perform schema changes, repartition data, filter out unwanted data, enrich existing data, and so on. This
+behaves just like any other <a href="#overwrite">overwrite</a> with regard to atomic updates and locking.</p>
+<p>With <a href="/docs/26.0.0/ingestion/native-batch.html">native batch</a>, use the <a href="/docs/26.0.0/ingestion/native-batch-input-sources.html#druid-input-source"><code>druid</code> input
+source</a>. If needed,
+<a href="/docs/26.0.0/ingestion/ingestion-spec.html#transformspec"><code>transformSpec</code></a> can be used to filter or modify data during the
+reindexing job.</p>
+<p>With SQL, use <a href="/docs/26.0.0/multi-stage-query/reference.html#replace"><code>REPLACE <table> OVERWRITE</code></a> with <code>SELECT ... FROM <table></code>.
+(Druid does not have <code>UPDATE</code> or <code>ALTER TABLE</code> statements.) Any SQL SELECT query can be used to filter,
+modify, or enrich the data during the reindexing job.</p>
+<h2><a class="anchor" aria-hidden="true" id="rolled-up-datasources"></a><a href="#rolled-up-datasources" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2 [...]
+<p>Rolled-up datasources can be effectively updated using appends, without rewrites. When you append a row that has an
+identical set of dimensions to an existing row, queries that use aggregation operators automatically combine those two
+rows together at query time.</p>
+<p><a href="/docs/26.0.0/data-management/compaction.html">Compaction</a> or <a href="/docs/26.0.0/data-management/automatic-compaction.html">automatic compaction</a> can be used to physically combine these
+matching rows together later on, by rewriting segments in the background.</p>
+<h2><a class="anchor" aria-hidden="true" id="lookups"></a><a href="#lookups" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1- [...]
+<p>If you have a dimension where values need to be updated frequently, try first using <a href="/docs/26.0.0/querying/lookups.html">lookups</a>. A
+classic use case of lookups is when you have an ID dimension stored in a Druid segment, and want to map the ID dimension to a
+human-readable string that may need to be updated periodically.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/data-management/index.html"><span class="arrow-prev">← </span><span>Overview</span></a><a class="docs-next button" href="/docs/26.0.0/data-management/delete.html"><span>Data deletion</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#overwrite">Overwrite</a></li><li><a href="#reindex">Reindex</a></li><li><a href="# [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
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@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../development/extensions-contrib/cassandra.html">
+<meta http-equiv="refresh" content="0; url=../development/extensions-contrib/cassandra.html">
+<h1>Redirecting...</h1>
+<a href="../development/extensions-contrib/cassandra.html">Click here if you are not redirected.</a>
+<script>location="../development/extensions-contrib/cassandra.html"</script>
diff --git a/docs/26.0.0/dependencies/deep-storage.html b/docs/26.0.0/dependencies/deep-storage.html
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@@ -0,0 +1,137 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Deep storage · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/dependencies/deep-storage.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" c [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/dependencies/deep-storage.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Deep storage</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>Deep storage is where segments are stored. It is a storage mechanism that Apache Druid does not provide. This deep storage infrastructure defines the level of durability of your data, as long as Druid processes can see this storage infrastructure and get at the segments stored on it, you will not lose data no matter how many Druid nodes you lose. If segments disappear from this storage layer, then you will lose whatever data those segments represented.</p>
+<h2><a class="anchor" aria-hidden="true" id="local"></a><a href="#local" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09 [...]
+<p>Local storage is intended for use in the following situations:</p>
+<ul>
+<li>You have just one server.</li>
+<li>Or, you have multiple servers, and they all have access to a shared filesystem (for example: NFS).</li>
+</ul>
+<p>In multi-server production clusters, rather than local storage with a shared filesystem, it is instead recommended to
+use cloud-based deep storage (<a href="#amazon-s3-or-s3-compatible">Amazon S3</a>, <a href="#google-cloud-storage">Google Cloud Storage</a>,
+or <a href="#azure-blob-storage">Azure Blob Storage</a>), S3-compatible storage (like Minio), or <a href="#hdfs">HDFS</a>. These options are
+generally more convenient, more scalable, and more robust than setting up a shared filesystem.</p>
+<p>The following configurations in <code>common.runtime.properties</code> apply to local storage:</p>
+<table>
+<thead>
+<tr><th>Property</th><th>Possible Values</th><th>Description</th><th>Default</th></tr>
+</thead>
+<tbody>
+<tr><td><code>druid.storage.type</code></td><td><code>local</code></td><td></td><td>Must be set.</td></tr>
+<tr><td><code>druid.storage.storageDirectory</code></td><td>any local directory</td><td>Directory for storing segments. Must be different from <code>druid.segmentCache.locations</code> and <code>druid.segmentCache.infoDir</code>.</td><td><code>/tmp/druid/localStorage</code></td></tr>
+<tr><td><code>druid.storage.zip</code></td><td><code>true</code>, <code>false</code></td><td>Whether segments in <code>druid.storage.storageDirectory</code> are written as directories (<code>false</code>) or zip files (<code>true</code>).</td><td><code>false</code></td></tr>
+</tbody>
+</table>
+<p>For example:</p>
+<pre><code class="hljs"><span class="hljs-attr">druid.storage.type</span>=local
+<span class="hljs-attr">druid.storage.storageDirectory</span>=/tmp/druid/localStorage
+</code></pre>
+<p>The <code>druid.storage.storageDirectory</code> must be set to a different path than <code>druid.segmentCache.locations</code> or
+<code>druid.segmentCache.infoDir</code>.</p>
+<h2><a class="anchor" aria-hidden="true" id="amazon-s3-or-s3-compatible"></a><a href="#amazon-s3-or-s3-compatible" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H [...]
+<p>See <a href="/docs/26.0.0/development/extensions-core/s3.html"><code>druid-s3-extensions</code></a>.</p>
+<h2><a class="anchor" aria-hidden="true" id="google-cloud-storage"></a><a href="#google-cloud-storage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1 [...]
+<p>See <a href="/docs/26.0.0/development/extensions-core/google.html"><code>druid-google-extensions</code></a>.</p>
+<h2><a class="anchor" aria-hidden="true" id="azure-blob-storage"></a><a href="#azure-blob-storage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22- [...]
+<p>See <a href="/docs/26.0.0/development/extensions-core/azure.html"><code>druid-azure-extensions</code></a>.</p>
+<h2><a class="anchor" aria-hidden="true" id="hdfs"></a><a href="#hdfs" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6 [...]
+<p>See <a href="/docs/26.0.0/development/extensions-core/hdfs.html">druid-hdfs-storage extension documentation</a>.</p>
+<h2><a class="anchor" aria-hidden="true" id="additional-options"></a><a href="#additional-options" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22- [...]
+<p>For additional deep storage options, please see our <a href="/docs/26.0.0/development/extensions.html">extensions list</a>.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/design/processes.html"><span class="arrow-prev">← </span><span>Processes and servers</span></a><a class="docs-next button" href="/docs/26.0.0/dependencies/metadata-storage.html"><span>Metadata storage</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#local">Local</a></li><li><a href="#amazon-s3-or-s3-compatible">A [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
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diff --git a/docs/26.0.0/dependencies/metadata-storage.html b/docs/26.0.0/dependencies/metadata-storage.html
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@@ -0,0 +1,207 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Metadata storage · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/dependencies/metadata-storage.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:ve [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/dependencies/metadata-storage.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Metadata storage</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>Apache Druid relies on an external dependency for metadata storage.
+Druid uses the metadata store to house various metadata about the system, but not to store the actual data.
+The metadata store retains all metadata essential for a Druid cluster to work.</p>
+<p>The metadata store includes the following:</p>
+<ul>
+<li>Segments records</li>
+<li>Rule records</li>
+<li>Configuration records</li>
+<li>Task-related tables</li>
+<li>Audit records</li>
+</ul>
+<p>Derby is the default metadata store for Druid, however, it is not suitable for production.
+<a href="/docs/26.0.0/development/extensions-core/mysql.html">MySQL</a> and <a href="/docs/26.0.0/development/extensions-core/postgresql.html">PostgreSQL</a> are more production suitable metadata stores.
+See <a href="/docs/26.0.0/configuration/index.html#metadata-storage">Metadata storage configuration</a> for the default configuration settings.</p>
+<blockquote>
+<p>We also recommend you set up a high availability environment because there is no way to restore lost metadata.</p>
+</blockquote>
+<h2><a class="anchor" aria-hidden="true" id="available-metadata-stores"></a><a href="#available-metadata-stores" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c [...]
+<p>Druid supports Derby, MySQL, and PostgreSQL for storing metadata.</p>
+<h3><a class="anchor" aria-hidden="true" id="derby"></a><a href="#derby" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09 [...]
+<blockquote>
+<p>For production clusters, consider using MySQL or PostgreSQL instead of Derby.</p>
+</blockquote>
+<p>Configure metadata storage with Derby by setting the following properties in your Druid configuration.</p>
+<pre><code class="hljs css language-properties"><span class="hljs-meta">druid.metadata.storage.type</span>=<span class="hljs-string">derby</span>
+<span class="hljs-meta">druid.metadata.storage.connector.connectURI</span>=<span class="hljs-string">jdbc:derby://localhost:1527//opt/var/druid_state/derby;create=true</span>
+</code></pre>
+<h3><a class="anchor" aria-hidden="true" id="mysql"></a><a href="#mysql" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09 [...]
+<p>See <a href="/docs/26.0.0/development/extensions-core/mysql.html">mysql-metadata-storage extension documentation</a>.</p>
+<h3><a class="anchor" aria-hidden="true" id="postgresql"></a><a href="#postgresql" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1 [...]
+<p>See <a href="/docs/26.0.0/development/extensions-core/postgresql.html">postgresql-metadata-storage</a>.</p>
+<h2><a class="anchor" aria-hidden="true" id="adding-custom-dbcp-properties"></a><a href="#adding-custom-dbcp-properties" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 [...]
+<p>You can add custom properties to customize the database connection pool (DBCP) for connecting to the metadata store.
+Define these properties with a <code>druid.metadata.storage.connector.dbcp.</code> prefix.
+For example:</p>
+<pre><code class="hljs css language-properties"><span class="hljs-meta">druid.metadata.storage.connector.dbcp.maxConnLifetimeMillis</span>=<span class="hljs-string">1200000</span>
+<span class="hljs-meta">druid.metadata.storage.connector.dbcp.defaultQueryTimeout</span>=<span class="hljs-string">30000</span>
+</code></pre>
+<p>Certain properties cannot be set through <code>druid.metadata.storage.connector.dbcp.</code> and must be set with the prefix <code>druid.metadata.storage.connector.</code>:</p>
+<ul>
+<li><code>username</code></li>
+<li><code>password</code></li>
+<li><code>connectURI</code></li>
+<li><code>validationQuery</code></li>
+<li><code>testOnBorrow</code></li>
+</ul>
+<p>See <a href="https://commons.apache.org/proper/commons-dbcp/configuration">BasicDataSource Configuration</a> for a full list of configurable properties.</p>
+<h2><a class="anchor" aria-hidden="true" id="metadata-storage-tables"></a><a href="#metadata-storage-tables" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 [...]
+<p>This section describes the various tables in metadata storage.</p>
+<h3><a class="anchor" aria-hidden="true" id="segments-table"></a><a href="#segments-table" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
+<p>This is dictated by the <code>druid.metadata.storage.tables.segments</code> property.</p>
+<p>This table stores metadata about the segments that should be available in the system. (This set of segments is called
+"used segments" elsewhere in the documentation and throughout the project.) The table is polled by the
+<a href="/docs/26.0.0/design/coordinator.html">Coordinator</a> to determine the set of segments that should be available for querying in the
+system. The table has two main functional columns, the other columns are for indexing purposes.</p>
+<p>Value 1 in the <code>used</code> column means that the segment should be "used" by the cluster (i.e., it should be loaded and
+available for requests). Value 0 means that the segment should not be loaded into the cluster. We do this as a means of
+unloading segments from the cluster without actually removing their metadata (which allows for simpler rolling back if
+that is ever an issue).</p>
+<p>The <code>payload</code> column stores a JSON blob that has all of the metadata for the segment.
+Some of the data in the <code>payload</code> column intentionally duplicates data from other columns in the segments table.
+As an example, the <code>payload</code> column may take the following form:</p>
+<pre><code class="hljs css language-json">{
+ <span class="hljs-attr">"dataSource"</span>:<span class="hljs-string">"wikipedia"</span>,
+ <span class="hljs-attr">"interval"</span>:<span class="hljs-string">"2012-05-23T00:00:00.000Z/2012-05-24T00:00:00.000Z"</span>,
+ <span class="hljs-attr">"version"</span>:<span class="hljs-string">"2012-05-24T00:10:00.046Z"</span>,
+ <span class="hljs-attr">"loadSpec"</span>:{
+ <span class="hljs-attr">"type"</span>:<span class="hljs-string">"s3_zip"</span>,
+ <span class="hljs-attr">"bucket"</span>:<span class="hljs-string">"bucket_for_segment"</span>,
+ <span class="hljs-attr">"key"</span>:<span class="hljs-string">"path/to/segment/on/s3"</span>
+ },
+ <span class="hljs-attr">"dimensions"</span>:<span class="hljs-string">"comma-delimited-list-of-dimension-names"</span>,
+ <span class="hljs-attr">"metrics"</span>:<span class="hljs-string">"comma-delimited-list-of-metric-names"</span>,
+ <span class="hljs-attr">"shardSpec"</span>:{<span class="hljs-attr">"type"</span>:<span class="hljs-string">"none"</span>},
+ <span class="hljs-attr">"binaryVersion"</span>:<span class="hljs-number">9</span>,
+ <span class="hljs-attr">"size"</span>:size_of_segment,
+ <span class="hljs-attr">"identifier"</span>:<span class="hljs-string">"wikipedia_2012-05-23T00:00:00.000Z_2012-05-24T00:00:00.000Z_2012-05-23T00:10:00.046Z"</span>
+}
+</code></pre>
+<h3><a class="anchor" aria-hidden="true" id="rule-table"></a><a href="#rule-table" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1 [...]
+<p>The rule table stores the various rules about where segments should
+land. These rules are used by the <a href="/docs/26.0.0/design/coordinator.html">Coordinator</a>
+when making segment (re-)allocation decisions about the cluster.</p>
+<h3><a class="anchor" aria-hidden="true" id="config-table"></a><a href="#config-table" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
+<p>The config table stores runtime configuration objects. We do not have
+many of these yet and we are not sure if we will keep this mechanism going
+forward, but it is the beginnings of a method of changing some configuration
+parameters across the cluster at runtime.</p>
+<h3><a class="anchor" aria-hidden="true" id="task-related-tables"></a><a href="#task-related-tables" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.2 [...]
+<p>Task-related tables are created and used by the <a href="/docs/26.0.0/design/overlord.html">Overlord</a> and <a href="/docs/26.0.0/design/middlemanager.html">MiddleManager</a> when managing tasks.</p>
+<h3><a class="anchor" aria-hidden="true" id="audit-table"></a><a href="#audit-table" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42 [...]
+<p>The audit table stores the audit history for configuration changes
+such as rule changes done by <a href="/docs/26.0.0/design/coordinator.html">Coordinator</a> and other
+config changes.</p>
+<h2><a class="anchor" aria-hidden="true" id="metadata-storage-access"></a><a href="#metadata-storage-access" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 [...]
+<p>Only the following processes access the metadata storage:</p>
+<ol>
+<li>Indexing service processes (if any)</li>
+<li>Realtime processes (if any)</li>
+<li>Coordinator processes</li>
+</ol>
+<p>Thus you need to give permissions (e.g., in AWS security groups) for only these machines to access the metadata storage.</p>
+<h2><a class="anchor" aria-hidden="true" id="learn-more"></a><a href="#learn-more" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1 [...]
+<p>See the following topics for more information:</p>
+<ul>
+<li><a href="/docs/26.0.0/configuration/index.html#metadata-storage">Metadata storage configuration</a></li>
+<li><a href="/docs/26.0.0/operations/clean-metadata-store.html">Automated cleanup for metadata records</a></li>
+</ul>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/dependencies/deep-storage.html"><span class="arrow-prev">← </span><span>Deep storage</span></a><a class="docs-next button" href="/docs/26.0.0/dependencies/zookeeper.html"><span class="function-name-prevnext">ZooKeeper</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#available-metadata-stores">Available metadata s [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
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+ search && search.focus();
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+ });
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+ var search = docsearch({
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diff --git a/docs/26.0.0/dependencies/zookeeper.html b/docs/26.0.0/dependencies/zookeeper.html
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@@ -0,0 +1,136 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>ZooKeeper · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/dependencies/zookeeper.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content [...]
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+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
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+ while(el !== headings){
+ if (el.tagName === 'A') {
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+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/dependencies/zookeeper.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">ZooKeeper</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>Apache Druid uses <a href="http://zookeeper.apache.org/">Apache ZooKeeper</a> (ZK) for management of current cluster state.</p>
+<h2><a class="anchor" aria-hidden="true" id="minimum-zookeeper-versions"></a><a href="#minimum-zookeeper-versions" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H [...]
+<p>Apache Druid supports ZooKeeper versions 3.5.x and above.</p>
+<blockquote>
+<p>Note: Starting with Apache Druid 0.22.0, support for ZooKeeper 3.4.x has been removed</p>
+</blockquote>
+<h2><a class="anchor" aria-hidden="true" id="zookeeper-operations"></a><a href="#zookeeper-operations" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1 [...]
+<p>The operations that happen over ZK are</p>
+<ol>
+<li><a href="/docs/26.0.0/design/coordinator.html">Coordinator</a> leader election</li>
+<li>Segment "publishing" protocol from <a href="/docs/26.0.0/design/historical.html">Historical</a></li>
+<li>Segment load/drop protocol between <a href="/docs/26.0.0/design/coordinator.html">Coordinator</a> and <a href="/docs/26.0.0/design/historical.html">Historical</a></li>
+<li><a href="/docs/26.0.0/design/overlord.html">Overlord</a> leader election</li>
+<li><a href="/docs/26.0.0/design/overlord.html">Overlord</a> and <a href="/docs/26.0.0/design/middlemanager.html">MiddleManager</a> task management</li>
+</ol>
+<h2><a class="anchor" aria-hidden="true" id="coordinator-leader-election"></a><a href="#coordinator-leader-election" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 1 [...]
+<p>We use the Curator <a href="https://curator.apache.org/curator-recipes/leader-latch.html">LeaderLatch</a> recipe to perform leader election at path</p>
+<pre><code class="hljs">${druid<span class="hljs-selector-class">.zk</span><span class="hljs-selector-class">.paths</span>.coordinatorPath}/_COORDINATOR
+</code></pre>
+<h2><a class="anchor" aria-hidden="true" id="segment-publishing-protocol-from-historical-and-realtime"></a><a href="#segment-publishing-protocol-from-historical-and-realtime" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.2 [...]
+<p>The <code>announcementsPath</code> and <code>servedSegmentsPath</code> are used for this.</p>
+<p>All <a href="/docs/26.0.0/design/historical.html">Historical</a> processes publish themselves on the <code>announcementsPath</code>, specifically, they will create an ephemeral znode at</p>
+<pre><code class="hljs"><span class="hljs-variable">${druid.zk.paths.announcementsPath}</span>/<span class="hljs-variable">${druid.host}</span>
+</code></pre>
+<p>Which signifies that they exist. They will also subsequently create a permanent znode at</p>
+<pre><code class="hljs"><span class="hljs-variable">${druid.zk.paths.servedSegmentsPath}</span>/<span class="hljs-variable">${druid.host}</span>
+</code></pre>
+<p>And as they load up segments, they will attach ephemeral znodes that look like</p>
+<pre><code class="hljs"><span class="hljs-variable">${druid.zk.paths.servedSegmentsPath}</span><span class="hljs-regexp">/${druid.host}/</span>_segment_identifier_
+</code></pre>
+<p>Processes like the <a href="/docs/26.0.0/design/coordinator.html">Coordinator</a> and <a href="/docs/26.0.0/design/broker.html">Broker</a> can then watch these paths to see which processes are currently serving which segments.</p>
+<h2><a class="anchor" aria-hidden="true" id="segment-loaddrop-protocol-between-coordinator-and-historical"></a><a href="#segment-loaddrop-protocol-between-coordinator-and-historical" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 [...]
+<p>The <code>loadQueuePath</code> is used for this.</p>
+<p>When the <a href="/docs/26.0.0/design/coordinator.html">Coordinator</a> decides that a <a href="/docs/26.0.0/design/historical.html">Historical</a> process should load or drop a segment, it writes an ephemeral znode to</p>
+<pre><code class="hljs"><span class="hljs-variable">${druid.zk.paths.loadQueuePath}</span><span class="hljs-regexp">/_host_of_historical_process/</span>_segment_identifier
+</code></pre>
+<p>This znode will contain a payload that indicates to the Historical process what it should do with the given segment. When the Historical process is done with the work, it will delete the znode in order to signify to the Coordinator that it is complete.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/dependencies/metadata-storage.html"><span class="arrow-prev">← </span><span>Metadata storage</span></a><a class="docs-next button" href="/docs/26.0.0/ingestion/index.html"><span>Ingestion</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#minimum-zookeeper-versions">Minimum ZooKeeper versions</a></li><li><a href="# [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/latest/design/architecture.html b/docs/26.0.0/design/architecture.html
similarity index 54%
copy from docs/latest/design/architecture.html
copy to docs/26.0.0/design/architecture.html
index 206d5b8f..951e1340 100644
--- a/docs/latest/design/architecture.html
+++ b/docs/26.0.0/design/architecture.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Design · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/design/architecture.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content="25.0 [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Design · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/design/architecture.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content="26.0 [...]
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'UA-131010415-1');
- </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
var coll = document.getElementsByClassName('collapsible');
var checkActiveCategory = true;
for (var i = 0; i < coll.length; i++) {
@@ -85,12 +85,12 @@
<h2><a class="anchor" aria-hidden="true" id="druid-services"></a><a href="#druid-services" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
<p>Druid has several types of services:</p>
<ul>
-<li><a href="/docs/latest/design/coordinator.html"><strong>Coordinator</strong></a> service manages data availability on the cluster.</li>
-<li><a href="/docs/latest/design/overlord.html"><strong>Overlord</strong></a> service controls the assignment of data ingestion workloads.</li>
-<li><a href="/docs/latest/design/broker.html"><strong>Broker</strong></a> handles queries from external clients.</li>
-<li><a href="/docs/latest/design/router.html"><strong>Router</strong></a> services are optional; they route requests to Brokers, Coordinators, and Overlords.</li>
-<li><a href="/docs/latest/design/historical.html"><strong>Historical</strong></a> services store queryable data.</li>
-<li><a href="/docs/latest/design/middlemanager.html"><strong>MiddleManager</strong></a> services ingest data.</li>
+<li><a href="/docs/26.0.0/design/coordinator.html"><strong>Coordinator</strong></a> service manages data availability on the cluster.</li>
+<li><a href="/docs/26.0.0/design/overlord.html"><strong>Overlord</strong></a> service controls the assignment of data ingestion workloads.</li>
+<li><a href="/docs/26.0.0/design/broker.html"><strong>Broker</strong></a> handles queries from external clients.</li>
+<li><a href="/docs/26.0.0/design/router.html"><strong>Router</strong></a> services are optional; they route requests to Brokers, Coordinators, and Overlords.</li>
+<li><a href="/docs/26.0.0/design/historical.html"><strong>Historical</strong></a> services store queryable data.</li>
+<li><a href="/docs/26.0.0/design/middlemanager.html"><strong>MiddleManager</strong></a> services ingest data.</li>
</ul>
<p>You can view services in the <strong>Services</strong> tab in the web console:</p>
<p><img src="../assets/services-overview.png" alt="Druid services" title="Services in the web console"></p>
@@ -101,7 +101,7 @@
<li><strong>Query</strong>: Runs Broker and optional Router processes, handles queries from external clients.</li>
<li><strong>Data</strong>: Runs Historical and MiddleManager processes, executes ingestion workloads and stores all queryable data.</li>
</ul>
-<p>For more details on process and server organization, please see <a href="/docs/latest/design/processes.html">Druid Processes and Servers</a>.</p>
+<p>For more details on process and server organization, please see <a href="/docs/26.0.0/design/processes.html">Druid Processes and Servers</a>.</p>
<h2><a class="anchor" aria-hidden="true" id="external-dependencies"></a><a href="#external-dependencies" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2 [...]
<p>In addition to its built-in process types, Druid also has three external dependencies. These are intended to be able to
leverage existing infrastructure, where present.</p>
@@ -117,21 +117,21 @@ during a query, helping it offer the best query latencies possible. It also mean
both in deep storage and across your Historical servers for the data you plan to load.</p>
<p>Deep storage is an important part of Druid's elastic, fault-tolerant design. Druid bootstraps from deep storage even
if every single data server is lost and re-provisioned.</p>
-<p>For more details, please see the <a href="/docs/latest/dependencies/deep-storage.html">Deep storage</a> page.</p>
+<p>For more details, please see the <a href="/docs/26.0.0/dependencies/deep-storage.html">Deep storage</a> page.</p>
<h3><a class="anchor" aria-hidden="true" id="metadata-storage"></a><a href="#metadata-storage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2. [...]
<p>The metadata storage holds various shared system metadata such as segment usage information and task information. In a
clustered deployment, this is typically a traditional RDBMS like PostgreSQL or MySQL. In a single-server
deployment, it is typically a locally-stored Apache Derby database.</p>
-<p>For more details, please see the <a href="/docs/latest/dependencies/metadata-storage.html">Metadata storage</a> page.</p>
+<p>For more details, please see the <a href="/docs/26.0.0/dependencies/metadata-storage.html">Metadata storage</a> page.</p>
<h3><a class="anchor" aria-hidden="true" id="zookeeper"></a><a href="#zookeeper" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.6 [...]
<p>Used for internal service discovery, coordination, and leader election.</p>
-<p>For more details, please see the <a href="/docs/latest/dependencies/zookeeper.html">ZooKeeper</a> page.</p>
+<p>For more details, please see the <a href="/docs/26.0.0/dependencies/zookeeper.html">ZooKeeper</a> page.</p>
<h2><a class="anchor" aria-hidden="true" id="storage-design"></a><a href="#storage-design" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
<h3><a class="anchor" aria-hidden="true" id="datasources-and-segments"></a><a href="#datasources-and-segments" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-. [...]
<p>Druid data is stored in <em>datasources</em>, which are similar to tables in a traditional RDBMS. Each datasource is
partitioned by time and, optionally, further partitioned by other attributes. Each time range is called a <em>chunk</em> (for
example, a single day, if your datasource is partitioned by day). Within a chunk, data is partitioned into one or more
-<a href="/docs/latest/design/segments.html"><em>segments</em></a>. Each segment is a single file, typically comprising up to a few million rows of data. Since segments are
+<a href="/docs/26.0.0/design/segments.html"><em>segments</em></a>. Each segment is a single file, typically comprising up to a few million rows of data. Since segments are
organized into time chunks, it's sometimes helpful to think of segments as living on a timeline like the following:</p>
<p><img src="../assets/druid-timeline.png" width="800" /></p>
<p>A datasource may have anywhere from just a few segments, up to hundreds of thousands and even millions of segments. Each
@@ -153,8 +153,8 @@ become immutable, and move from MiddleManagers to the Historical processes. An e
to the <a href="#metadata-storage">metadata store</a>. This entry is a self-describing bit of metadata about the segment, including
things like the schema of the segment, its size, and its location on deep storage. These entries tell the
Coordinator what data is available on the cluster.</p>
-<p>For details on the segment file format, please see <a href="/docs/latest/design/segments.html">segment files</a>.</p>
-<p>For details on modeling your data in Druid, see <a href="/docs/latest/ingestion/schema-design.html">schema design</a>.</p>
+<p>For details on the segment file format, please see <a href="/docs/26.0.0/design/segments.html">segment files</a>.</p>
+<p>For details on modeling your data in Druid, see <a href="/docs/26.0.0/ingestion/schema-design.html">schema design</a>.</p>
<h3><a class="anchor" aria-hidden="true" id="indexing-and-handoff"></a><a href="#indexing-and-handoff" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1 [...]
<p><em>Indexing</em> is the mechanism by which new segments are created, and <em>handoff</em> is the mechanism by which they are published
and begin being served by Historical processes. On the indexing side:</p>
@@ -213,7 +213,7 @@ new segments. Then it drops the old segments a few minutes later.</p>
<p>Each segment has a lifecycle that involves the following three major areas:</p>
<ol>
<li><strong>Metadata store:</strong> Segment metadata (a small JSON payload generally no more than a few KB) is stored in the
-<a href="/docs/latest/dependencies/metadata-storage.html">metadata store</a> once a segment is done being constructed. The act of inserting
+<a href="/docs/26.0.0/dependencies/metadata-storage.html">metadata store</a> once a segment is done being constructed. The act of inserting
a record for a segment into the metadata store is called <em>publishing</em>. These metadata records have a boolean flag
named <code>used</code>, which controls whether the segment is intended to be queryable or not. Segments created by realtime tasks will be
available before they are published, since they are only published when the segment is complete and will not accept
@@ -224,7 +224,7 @@ happens immediately before publishing metadata to the metadata store.</li>
or a Historical process.</li>
</ol>
<p>You can inspect the state of currently active segments using the Druid SQL
-<a href="/docs/latest/querying/sql-metadata-tables.html#segments-table"><code>sys.segments</code> table</a>. It includes the following flags:</p>
+<a href="/docs/26.0.0/querying/sql-metadata-tables.html#segments-table"><code>sys.segments</code> table</a>. It includes the following flags:</p>
<ul>
<li><code>is_published</code>: True if segment metadata has been published to the metadata store and <code>used</code> is true.</li>
<li><code>is_available</code>: True if the segment is currently available for querying, either on a realtime task or Historical
@@ -239,33 +239,33 @@ automatically set to false.</li>
<p>Druid has an architectural separation between ingestion and querying, as described above in
<a href="#indexing-and-handoff">Indexing and handoff</a>. This means that when understanding Druid's availability and
consistency properties, we must look at each function separately.</p>
-<p>On the <strong>ingestion side</strong>, Druid's primary <a href="/docs/latest/ingestion/index.html#ingestion-methods">ingestion methods</a> are all
+<p>On the <strong>ingestion side</strong>, Druid's primary <a href="/docs/26.0.0/ingestion/index.html#ingestion-methods">ingestion methods</a> are all
pull-based and offer transactional guarantees. This means that you are guaranteed that ingestion using these
methods will publish in an all-or-nothing manner:</p>
<ul>
-<li>Supervised "seekable-stream" ingestion methods like <a href="/docs/latest/development/extensions-core/kafka-ingestion.html">Kafka</a> and
-<a href="/docs/latest/development/extensions-core/kinesis-ingestion.html">Kinesis</a>. With these methods, Druid commits stream offsets to its
+<li>Supervised "seekable-stream" ingestion methods like <a href="/docs/26.0.0/development/extensions-core/kafka-ingestion.html">Kafka</a> and
+<a href="/docs/26.0.0/development/extensions-core/kinesis-ingestion.html">Kinesis</a>. With these methods, Druid commits stream offsets to its
<a href="#metadata-storage">metadata store</a> alongside segment metadata, in the same transaction. Note that ingestion of data
that has not yet been published can be rolled back if ingestion tasks fail. In this case, partially-ingested data is
discarded, and Druid will resume ingestion from the last committed set of stream offsets. This ensures exactly-once
publishing behavior.</li>
-<li><a href="/docs/latest/ingestion/hadoop.html">Hadoop-based batch ingestion</a>. Each task publishes all segment metadata in a single
+<li><a href="/docs/26.0.0/ingestion/hadoop.html">Hadoop-based batch ingestion</a>. Each task publishes all segment metadata in a single
transaction.</li>
-<li><a href="/docs/latest/ingestion/native-batch.html">Native batch ingestion</a>. In parallel mode, the supervisor task publishes all segment
+<li><a href="/docs/26.0.0/ingestion/native-batch.html">Native batch ingestion</a>. In parallel mode, the supervisor task publishes all segment
metadata in a single transaction after the subtasks are finished. In simple (single-task) mode, the single task
publishes all segment metadata in a single transaction after it is complete.</li>
</ul>
<p>Additionally, some ingestion methods offer an <em>idempotency</em> guarantee. This means that repeated executions of the same
ingestion will not cause duplicate data to be ingested:</p>
<ul>
-<li>Supervised "seekable-stream" ingestion methods like <a href="/docs/latest/development/extensions-core/kafka-ingestion.html">Kafka</a> and
-<a href="/docs/latest/development/extensions-core/kinesis-ingestion.html">Kinesis</a> are idempotent due to the fact that stream offsets and
+<li>Supervised "seekable-stream" ingestion methods like <a href="/docs/26.0.0/development/extensions-core/kafka-ingestion.html">Kafka</a> and
+<a href="/docs/26.0.0/development/extensions-core/kinesis-ingestion.html">Kinesis</a> are idempotent due to the fact that stream offsets and
segment metadata are stored together and updated in lock-step.</li>
-<li><a href="/docs/latest/ingestion/hadoop.html">Hadoop-based batch ingestion</a> is idempotent unless one of your input sources
+<li><a href="/docs/26.0.0/ingestion/hadoop.html">Hadoop-based batch ingestion</a> is idempotent unless one of your input sources
is the same Druid datasource that you are ingesting into. In this case, running the same task twice is non-idempotent,
because you are adding to existing data instead of overwriting it.</li>
-<li><a href="/docs/latest/ingestion/native-batch.html">Native batch ingestion</a> is idempotent unless
-<a href="/docs/latest/ingestion/native-batch.html"><code>appendToExisting</code></a> is true, or one of your input sources is the same Druid datasource
+<li><a href="/docs/26.0.0/ingestion/native-batch.html">Native batch ingestion</a> is idempotent unless
+<a href="/docs/26.0.0/ingestion/native-batch.html"><code>appendToExisting</code></a> is true, or one of your input sources is the same Druid datasource
that you are ingesting into. In either of these two cases, running the same task twice is non-idempotent, because you
are adding to existing data instead of overwriting it.</li>
</ul>
@@ -284,7 +284,7 @@ must <em>all</em> be available before the Broker will use them instead of the ol
per version per time chunk. Druid will also only use a single version at a time per time chunk. Together, these
properties provide Druid's atomic replacement guarantees.</p>
<p>Druid also supports an experimental <em>segment locking</em> mode that is activated by setting
-<a href="/docs/latest/ingestion/tasks.html#context"><code>forceTimeChunkLock</code></a> to false in the context of an ingestion task. In this case, Druid
+<a href="/docs/26.0.0/ingestion/tasks.html#context"><code>forceTimeChunkLock</code></a> to false in the context of an ingestion task. In this case, Druid
creates an <em>atomic update group</em> using the existing version for the time chunk, instead of creating a new core set
with a new version number. There can be multiple atomic update groups with the same version number per time chunk. Each
one replaces a specific set of earlier segments in the same time chunk and with the same version number. Druid will
@@ -297,10 +297,10 @@ reload these unavailable segments on other Historicals as quickly as possible, a
queries again.</p>
<h2><a class="anchor" aria-hidden="true" id="query-processing"></a><a href="#query-processing" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2. [...]
<p>Queries are distributed across the Druid cluster, and managed by a Broker.
-Queries first enter the <a href="/docs/latest/design/broker.html">Broker</a>, which identifies the segments with data that may pertain to that query.
+Queries first enter the <a href="/docs/26.0.0/design/broker.html">Broker</a>, which identifies the segments with data that may pertain to that query.
The list of segments is always pruned by time, and may also be pruned by other attributes depending on how your
-datasource is partitioned. The Broker will then identify which <a href="/docs/latest/design/historical.html">Historicals</a> and
-<a href="/docs/latest/design/middlemanager.html">MiddleManagers</a> are serving those segments and distributes a rewritten subquery to each of those processes.
+datasource is partitioned. The Broker will then identify which <a href="/docs/26.0.0/design/historical.html">Historicals</a> and
+<a href="/docs/26.0.0/design/middlemanager.html">MiddleManagers</a> are serving those segments and distributes a rewritten subquery to each of those processes.
The Historical/MiddleManager processes execute each subquery and return results to the Broker. The Broker merges the partial results
to get the final answer, which it returns to the original caller.</p>
<p>Time and attribute pruning is an important way that Druid limits the amount of data that must be scanned for each query, but it is
@@ -315,9 +315,9 @@ query.</p>
<li>Within each segment, using indexes to identify which rows must be accessed.</li>
<li>Within each segment, only reading the specific rows and columns that are relevant to a particular query.</li>
</ul>
-<p>For more details about how Druid executes queries, refer to the <a href="/docs/latest/querying/query-execution.html">Query execution</a>
+<p>For more details about how Druid executes queries, refer to the <a href="/docs/26.0.0/querying/query-execution.html">Query execution</a>
documentation.</p>
-</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/latest/tutorials/tutorial-jupyter-index.html"><span class="arrow-prev">← </span><span>Jupyter Notebook tutorials</span></a><a class="docs-next button" href="/docs/latest/design/segments.html"><span>Segments</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#druid-architecture">Druid architecture</a></li><li><a href="#drui [...]
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/tutorials/tutorial-jdbc.html"><span class="arrow-prev">← </span><span>JDBC connector</span></a><a class="docs-next button" href="/docs/26.0.0/design/segments.html"><span>Segments</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#druid-architecture">Druid architecture</a></li><li><a href="#druid-services">Druid ser [...]
document.addEventListener('keyup', function(e) {
if (e.target !== document.body) {
return;
@@ -334,6 +334,6 @@ documentation.</p>
apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
indexName: 'apache_druid',
inputSelector: '#search_input_react',
- algoliaOptions: {"facetFilters":["language:en","version:25.0.0"]}
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
});
</script></body></html>
\ No newline at end of file
diff --git a/docs/latest/design/auth.html b/docs/26.0.0/design/auth.html
similarity index 55%
copy from docs/latest/design/auth.html
copy to docs/26.0.0/design/auth.html
index 96abf1b6..324ddfb0 100644
--- a/docs/latest/design/auth.html
+++ b/docs/26.0.0/design/auth.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Authentication and Authorization · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/design/auth.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:vers [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Authentication and Authorization · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/design/auth.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:vers [...]
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'UA-131010415-1');
- </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
var coll = document.getElementsByClassName('collapsible');
var checkActiveCategory = true;
for (var i = 0; i < coll.length; i++) {
@@ -196,7 +196,7 @@ druid.auth.authorizer.<authorizer-<span class="hljs-built_in">name</span>>
</code></pre>
<p>These properties provide the authenticator and authorizer names to the implementations as @JsonProperty parameters, potentially useful when multiple authenticators or authorizers of the same type are configured.</p>
-</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/latest/comparisons/druid-vs-sql-on-hadoop.html"><span class="arrow-prev">← </span><span>Apache Druid vs SQL-on-Hadoop</span></a><a class="docs-next button" href="/docs/latest/design/broker.html"><span>Broker</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#enabling-authenticationauthorizationloadinglookuptest">Enabling [...]
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/comparisons/druid-vs-sql-on-hadoop.html"><span class="arrow-prev">← </span><span>Apache Druid vs SQL-on-Hadoop</span></a><a class="docs-next button" href="/docs/26.0.0/design/broker.html"><span>Broker</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#enabling-authenticationauthorizationloadinglookuptest">Enabling [...]
document.addEventListener('keyup', function(e) {
if (e.target !== document.body) {
return;
@@ -213,6 +213,6 @@ druid.auth.authorizer.<authorizer-<span class="hljs-built_in">name</span>>
apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
indexName: 'apache_druid',
inputSelector: '#search_input_react',
- algoliaOptions: {"facetFilters":["language:en","version:25.0.0"]}
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
});
</script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/design/broker.html b/docs/26.0.0/design/broker.html
new file mode 100644
index 00000000..8e4e448f
--- /dev/null
+++ b/docs/26.0.0/design/broker.html
@@ -0,0 +1,116 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Broker · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/design/broker.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content="26.0.0" /> [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/design/broker.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Broker</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<h3><a class="anchor" aria-hidden="true" id="configuration"></a><a href="#configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
+<p>For Apache Druid Broker Process Configuration, see <a href="/docs/26.0.0/configuration/index.html#broker">Broker Configuration</a>.</p>
+<p>For basic tuning guidance for the Broker process, see <a href="/docs/26.0.0/operations/basic-cluster-tuning.html#broker">Basic cluster tuning</a>.</p>
+<h3><a class="anchor" aria-hidden="true" id="http-endpoints"></a><a href="#http-endpoints" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
+<p>For a list of API endpoints supported by the Broker, see <a href="/docs/26.0.0/operations/api-reference.html#broker">Broker API</a>.</p>
+<h3><a class="anchor" aria-hidden="true" id="overview"></a><a href="#overview" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 [...]
+<p>The Broker is the process to route queries to if you want to run a distributed cluster. It understands the metadata published to ZooKeeper about what segments exist on what processes and routes queries such that they hit the right processes. This process also merges the result sets from all of the individual processes together.
+On start up, Historical processes announce themselves and the segments they are serving in Zookeeper.</p>
+<h3><a class="anchor" aria-hidden="true" id="running"></a><a href="#running" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1- [...]
+<pre><code class="hljs">org.apache.druid.cli.Main<span class="hljs-built_in"> server </span>broker
+</code></pre>
+<h3><a class="anchor" aria-hidden="true" id="forwarding-queries"></a><a href="#forwarding-queries" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22- [...]
+<p>Most Druid queries contain an interval object that indicates a span of time for which data is requested. Likewise, Druid <a href="/docs/26.0.0/design/segments.html">Segments</a> are partitioned to contain data for some interval of time and segments are distributed across a cluster. Consider a simple datasource with 7 segments where each segment contains data for a given day of the week. Any query issued to the datasource for more than one day of data will hit more than one segment. Th [...]
+<p>To determine which processes to forward queries to, the Broker process first builds a view of the world from information in Zookeeper. Zookeeper maintains information about <a href="/docs/26.0.0/design/historical.html">Historical</a> and streaming ingestion <a href="/docs/26.0.0/design/peons.html">Peon</a> processes and the segments they are serving. For every datasource in Zookeeper, the Broker process builds a timeline of segments and the processes that serve them. When queries are [...]
+<h3><a class="anchor" aria-hidden="true" id="caching"></a><a href="#caching" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1- [...]
+<p>Broker processes employ a cache with an LRU cache invalidation strategy. The Broker cache stores per-segment results. The cache can be local to each Broker process or shared across multiple processes using an external distributed cache such as <a href="http://memcached.org/">memcached</a>. Each time a broker process receives a query, it first maps the query to a set of segments. A subset of these segment results may already exist in the cache and the results can be directly pulled fro [...]
+Historical processes. Once the Historical processes return their results, the Broker will store those results in the cache. Real-time segments are never cached and hence requests for real-time data will always be forwarded to real-time processes. Real-time data is perpetually changing and caching the results would be unreliable.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/design/auth.html"><span class="arrow-prev">← </span><span>Authentication and Authorization</span></a><a class="docs-next button" href="/docs/26.0.0/design/coordinator.html"><span>Coordinator Process</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-c [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/design/concepts-and-terminology.html b/docs/26.0.0/design/concepts-and-terminology.html
new file mode 100644
index 00000000..eed33a41
--- /dev/null
+++ b/docs/26.0.0/design/concepts-and-terminology.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="index.html">
+<meta http-equiv="refresh" content="0; url=index.html">
+<h1>Redirecting...</h1>
+<a href="index.html">Click here if you are not redirected.</a>
+<script>location="index.html"</script>
diff --git a/docs/latest/design/coordinator.html b/docs/26.0.0/design/coordinator.html
similarity index 50%
copy from docs/latest/design/coordinator.html
copy to docs/26.0.0/design/coordinator.html
index f2c951f3..781499cf 100644
--- a/docs/latest/design/coordinator.html
+++ b/docs/26.0.0/design/coordinator.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Coordinator Process · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/design/coordinator.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" c [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Coordinator Process · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/design/coordinator.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" c [...]
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'UA-131010415-1');
- </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
var coll = document.getElementsByClassName('collapsible');
var checkActiveCategory = true;
for (var i = 0; i < coll.length; i++) {
@@ -78,10 +78,10 @@
~ under the License.
-->
<h3><a class="anchor" aria-hidden="true" id="configuration"></a><a href="#configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
-<p>For Apache Druid Coordinator Process Configuration, see <a href="/docs/latest/configuration/index.html#coordinator">Coordinator Configuration</a>.</p>
-<p>For basic tuning guidance for the Coordinator process, see <a href="/docs/latest/operations/basic-cluster-tuning.html#coordinator">Basic cluster tuning</a>.</p>
+<p>For Apache Druid Coordinator Process Configuration, see <a href="/docs/26.0.0/configuration/index.html#coordinator">Coordinator Configuration</a>.</p>
+<p>For basic tuning guidance for the Coordinator process, see <a href="/docs/26.0.0/operations/basic-cluster-tuning.html#coordinator">Basic cluster tuning</a>.</p>
<h3><a class="anchor" aria-hidden="true" id="http-endpoints"></a><a href="#http-endpoints" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
-<p>For a list of API endpoints supported by the Coordinator, see <a href="/docs/latest/operations/api-reference.html#coordinator">Coordinator API</a>.</p>
+<p>For a list of API endpoints supported by the Coordinator, see <a href="/docs/26.0.0/operations/api-reference.html#coordinator">Coordinator API</a>.</p>
<h3><a class="anchor" aria-hidden="true" id="overview"></a><a href="#overview" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 [...]
<p>The Druid Coordinator process is primarily responsible for segment management and distribution. More specifically, the
Druid Coordinator process communicates to Historical processes to load or drop segments based on configurations. The
@@ -103,7 +103,7 @@ the historical process will load the segment and begin servicing it.</p>
<pre><code class="hljs">org.apache.druid.cli.Main<span class="hljs-built_in"> server </span>coordinator
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="rules"></a><a href="#rules" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09 [...]
-<p>Segments can be automatically loaded and dropped from the cluster based on a set of rules. For more information on rules, see <a href="/docs/latest/operations/rule-configuration.html">Rule Configuration</a>.</p>
+<p>Segments can be automatically loaded and dropped from the cluster based on a set of rules. For more information on rules, see <a href="/docs/26.0.0/operations/rule-configuration.html">Rule Configuration</a>.</p>
<h3><a class="anchor" aria-hidden="true" id="cleaning-up-segments"></a><a href="#cleaning-up-segments" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1 [...]
<p>On each run, the Druid Coordinator compares the set of used segments in the database with the segments served by some
Historical nodes in the cluster. Coordinator sends requests to Historical nodes to unload unused segments or segments
@@ -115,22 +115,22 @@ marked as unused. During the next Coordinator's run, they will be unloaded from
<h3><a class="anchor" aria-hidden="true" id="balancing-segment-load"></a><a href="#balancing-segment-load" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0 [...]
<p>To ensure an even distribution of segments across Historical processes in the cluster, the Coordinator process will find the total size of all segments being served by every Historical process each time the Coordinator runs. For every Historical process tier in the cluster, the Coordinator process will determine the Historical process with the highest utilization and the Historical process with the lowest utilization. The percent difference in utilization between the two processes is [...]
<h3><a class="anchor" aria-hidden="true" id="automatic-compaction"></a><a href="#automatic-compaction" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1 [...]
-<p>The Druid Coordinator manages the <a href="/docs/latest/data-management/automatic-compaction.html">automatic compaction system</a>.
+<p>The Druid Coordinator manages the <a href="/docs/26.0.0/data-management/automatic-compaction.html">automatic compaction system</a>.
Each run, the Coordinator compacts segments by merging small segments or splitting a large one. This is useful when the size of your segments is not optimized which may degrade query performance.
-See <a href="/docs/latest/operations/segment-optimization.html">Segment size optimization</a> for details.</p>
+See <a href="/docs/26.0.0/operations/segment-optimization.html">Segment size optimization</a> for details.</p>
<p>The Coordinator first finds the segments to compact based on the <a href="#segment-search-policy-in-automatic-compaction">segment search policy</a>.
-Once some segments are found, it issues a <a href="/docs/latest/ingestion/tasks.html#compact">compaction task</a> to compact those segments.
+Once some segments are found, it issues a <a href="/docs/26.0.0/ingestion/tasks.html#compact">compaction task</a> to compact those segments.
The maximum number of running compaction tasks is <code>min(sum of worker capacity * slotRatio, maxSlots)</code>.
Note that even if <code>min(sum of worker capacity * slotRatio, maxSlots) = 0</code>, at least one compaction task is always submitted
if the compaction is enabled for a dataSource.
-See <a href="/docs/latest/operations/api-reference.html#automatic-compaction-configuration">Automatic compaction configuration API</a> and <a href="/docs/latest/configuration/index.html#automatic-compaction-dynamic-configuration">Automatic compaction configuration</a> to enable and configure automatic compaction.</p>
+See <a href="/docs/26.0.0/operations/api-reference.html#automatic-compaction-configuration">Automatic compaction configuration API</a> and <a href="/docs/26.0.0/configuration/index.html#automatic-compaction-dynamic-configuration">Automatic compaction configuration</a> to enable and configure automatic compaction.</p>
<p>Compaction tasks might fail due to the following reasons:</p>
<ul>
<li>If the input segments of a compaction task are removed or overshadowed before it starts, that compaction task fails immediately.</li>
-<li>If a task of a higher priority acquires a <a href="/docs/latest/ingestion/tasks.html#locking">time chunk lock</a> for an interval overlapping with the interval of a compaction task, the compaction task fails.</li>
+<li>If a task of a higher priority acquires a <a href="/docs/26.0.0/ingestion/tasks.html#locking">time chunk lock</a> for an interval overlapping with the interval of a compaction task, the compaction task fails.</li>
</ul>
<p>Once a compaction task fails, the Coordinator simply checks the segments in the interval of the failed task again, and issues another compaction task in the next run.</p>
-<p>Note that Compacting Segments Coordinator Duty is automatically enabled and run as part of the Indexing Service Duties group. However, Compacting Segments Coordinator Duty can be configured to run in isolation as a separate Coordinator duty group. This allows changing the period of Compacting Segments Coordinator Duty without impacting the period of other Indexing Service Duties. This can be done by setting the following properties. For more details, see <a href="/docs/latest/developm [...]
+<p>Note that Compacting Segments Coordinator Duty is automatically enabled and run as part of the Indexing Service Duties group. However, Compacting Segments Coordinator Duty can be configured to run in isolation as a separate Coordinator duty group. This allows changing the period of Compacting Segments Coordinator Duty without impacting the period of other Indexing Service Duties. This can be done by setting the following properties. For more details, see <a href="/docs/26.0.0/developm [...]
<pre><code class="hljs">druid.coordinator.dutyGroups=<span class="hljs-meta">[<SOME_GROUP_NAME>]</span>
druid.coordinator.<SOME_GROUP_NAME>.duties=[<span class="hljs-string">"compactSegments"</span>]
druid.coordinator.<SOME_GROUP_NAME>.period=<PERIOD_TO_RUN_COMPACTING_SEGMENTS_DUTY>
@@ -167,10 +167,10 @@ Finally, <code>foo_2017-09-01T00:00:00.000Z_2017-10-01T00:00:00.000Z_VERSION</co
If this is set, this policy will ignore the segments falling into the time chunk of (the end time of the most recent segment - <code>skipOffsetFromLatest</code>).
This is to avoid conflicts between compaction tasks and realtime tasks.
Note that realtime tasks have a higher priority than compaction tasks by default. Realtime tasks will revoke the locks of compaction tasks if their intervals overlap, resulting in the termination of the compaction task.
-For more information, see <a href="/docs/latest/data-management/automatic-compaction.html#avoid-conflicts-with-ingestion">Avoid conflicts with ingestion</a>.</p>
+For more information, see <a href="/docs/26.0.0/data-management/automatic-compaction.html#avoid-conflicts-with-ingestion">Avoid conflicts with ingestion</a>.</p>
<blockquote>
<p>This policy currently cannot handle the situation when there are a lot of small segments which have the same interval,
-and their total size exceeds <a href="/docs/latest/configuration/index.html#automatic-compaction-dynamic-configuration"><code>inputSegmentSizeBytes</code></a>.
+and their total size exceeds <a href="/docs/26.0.0/configuration/index.html#automatic-compaction-dynamic-configuration"><code>inputSegmentSizeBytes</code></a>.
If it finds such segments, it simply skips them.</p>
</blockquote>
<h3><a class="anchor" aria-hidden="true" id="faq"></a><a href="#faq" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.2 [...]
@@ -183,7 +183,7 @@ If it finds such segments, it simply skips them.</p>
<p>No. If the Druid Coordinator is not started up, no new segments will be loaded in the cluster and outdated segments will not be dropped. However, the Coordinator process can be started up at any time, and after a configurable delay, will start running Coordinator tasks.</p>
<p>This also means that if you have a working cluster and all of your Coordinators die, the cluster will continue to function, it just won’t experience any changes to its data topology.</p></li>
</ol>
-</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/latest/design/broker.html"><span class="arrow-prev">← </span><span>Broker</span></a><a class="docs-next button" href="/docs/latest/design/historical.html"><span>Historical Process</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p><a href="/techno [...]
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/design/broker.html"><span class="arrow-prev">← </span><span>Broker</span></a><a class="docs-next button" href="/docs/26.0.0/design/historical.html"><span>Historical Process</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p><a href="/techno [...]
document.addEventListener('keyup', function(e) {
if (e.target !== document.body) {
return;
@@ -200,6 +200,6 @@ If it finds such segments, it simply skips them.</p>
apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
indexName: 'apache_druid',
inputSelector: '#search_input_react',
- algoliaOptions: {"facetFilters":["language:en","version:25.0.0"]}
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
});
</script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/design/design.html b/docs/26.0.0/design/design.html
new file mode 100644
index 00000000..eed33a41
--- /dev/null
+++ b/docs/26.0.0/design/design.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="index.html">
+<meta http-equiv="refresh" content="0; url=index.html">
+<h1>Redirecting...</h1>
+<a href="index.html">Click here if you are not redirected.</a>
+<script>location="index.html"</script>
diff --git a/docs/latest/design/extensions-contrib/dropwizard.html b/docs/26.0.0/design/extensions-contrib/dropwizard.html
similarity index 99%
copy from docs/latest/design/extensions-contrib/dropwizard.html
copy to docs/26.0.0/design/extensions-contrib/dropwizard.html
index a3372f5f..837d9b38 100644
--- a/docs/latest/design/extensions-contrib/dropwizard.html
+++ b/docs/26.0.0/design/extensions-contrib/dropwizard.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Dropwizard metrics emitter · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/design/extensions-contrib/dropwizard.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta n [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Dropwizard metrics emitter · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/design/extensions-contrib/dropwizard.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta n [...]
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'UA-131010415-1');
- </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></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
@@ -22,7 +22,7 @@
~ under the License.
-->
<h1><a class="anchor" aria-hidden="true" id="dropwizard-emitter"></a><a href="#dropwizard-emitter" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22- [...]
-<p>To use this extension, make sure to <a href="/docs/latest/development/extensions.html#loading-extensions">include</a> <code>dropwizard-emitter</code> in the extensions load list.</p>
+<p>To use this extension, make sure to <a href="/docs/26.0.0/development/extensions.html#loading-extensions">include</a> <code>dropwizard-emitter</code> in the extensions load list.</p>
<h2><a class="anchor" aria-hidden="true" id="introduction"></a><a href="#introduction" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
<p>This extension integrates <a href="http://metrics.dropwizard.io/3.1.0/getting-started/#">Dropwizard</a> metrics library with druid so that dropwizard users can easily absorb druid into their monitoring ecosystem.
It accumulates druid metrics as dropwizard metrics, and emits them to various sinks via dropwizard supported reporters.
@@ -644,7 +644,7 @@ druid.emitter.dropwizard.reporters=[{<span class="hljs-string">"type"</span>:<sp
}
}
</code></pre>
-</span></div></article></div><div class="docs-prevnext"></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#introduction">Introduction</a></li><li><a href="#configuration">Configuration</a><ul class="toc-headings"><li><a href="#druid-to-dropwizard-event-conversion">Druid to Dropwizard Event Conversion</a></li><li><a href="#supported-dropwizard-reporters">Supported Dropwizard reporters</a></li><li><a href="#default-metrics-mapping">Default Metrics Mapping</a></ [...]
+</span></div></article></div><div class="docs-prevnext"></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#introduction">Introduction</a></li><li><a href="#configuration">Configuration</a><ul class="toc-headings"><li><a href="#druid-to-dropwizard-event-conversion">Druid to Dropwizard Event Conversion</a></li><li><a href="#supported-dropwizard-reporters">Supported Dropwizard reporters</a></li><li><a href="#default-metrics-mapping">Default Metrics Mapping</a></ [...]
document.addEventListener('keyup', function(e) {
if (e.target !== document.body) {
return;
@@ -661,6 +661,6 @@ druid.emitter.dropwizard.reporters=[{<span class="hljs-string">"type"</span>:<sp
apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
indexName: 'apache_druid',
inputSelector: '#search_input_react',
- algoliaOptions: {"facetFilters":["language:en","version:25.0.0"]}
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
});
</script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/design/historical.html b/docs/26.0.0/design/historical.html
new file mode 100644
index 00000000..f876eba0
--- /dev/null
+++ b/docs/26.0.0/design/historical.html
@@ -0,0 +1,124 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Historical Process · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/design/historical.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" con [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
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+ break;
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+
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+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
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+ return;
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+ toggler.onclick = function(event) {
+ event.preventDefault();
+
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+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/design/historical.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Historical Process</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<h3><a class="anchor" aria-hidden="true" id="configuration"></a><a href="#configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
+<p>For Apache Druid Historical Process Configuration, see <a href="/docs/26.0.0/configuration/index.html#historical">Historical Configuration</a>.</p>
+<p>For basic tuning guidance for the Historical process, see <a href="/docs/26.0.0/operations/basic-cluster-tuning.html#historical">Basic cluster tuning</a>.</p>
+<h3><a class="anchor" aria-hidden="true" id="http-endpoints"></a><a href="#http-endpoints" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
+<p>For a list of API endpoints supported by the Historical, please see the <a href="/docs/26.0.0/operations/api-reference.html#historical">API reference</a>.</p>
+<h3><a class="anchor" aria-hidden="true" id="running"></a><a href="#running" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1- [...]
+<pre><code class="hljs">org.apache.druid.cli.Main<span class="hljs-built_in"> server </span>historical
+</code></pre>
+<h3><a class="anchor" aria-hidden="true" id="loading-and-serving-segments"></a><a href="#loading-and-serving-segments" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 [...]
+<p>Each Historical process copies or "pulls" segment files from Deep Storage to local disk in an area called the <em>segment cache</em>. Set the <code>druid.segmentCache.locations</code> to configure the size and location of the segment cache on each Historical process. See <a href="/docs/26.0.0/configuration/index.html#historical-general-configuration">Historical general configuration</a>.</p>
+<p>See the <a href="/docs/26.0.0/operations/basic-cluster-tuning.html#segment-cache-size">Tuning Guide</a> for more information.</p>
+<p>The <a href="../design/coordinator.html">Coordinator</a> controls the assignment of segments to Historicals and the balance of segments between Historicals. Historical processes do not communicate directly with each other, nor do they communicate directly with the Coordinator. Instead, the Coordinator creates ephemeral entries in Zookeeper in a <a href="/docs/26.0.0/configuration/index.html#path-configuration">load queue path</a>. Each Historical process maintains a connection to Zoo [...]
+<p>For more information about how the Coordinator assigns segments to Historical processes, see <a href="/docs/26.0.0/design/coordinator.html">Coordinator</a>.</p>
+<p>When a Historical process detects a new entry in the Zookeeper load queue, it checks its own segment cache. If no information about the segment exists there, the Historical process first retrieves metadata from Zookeeper about the segment, including where the segment is located in Deep Storage and how it needs to decompress and process it.</p>
+<p>For more information about segment metadata and Druid segments in general, see <a href="/docs/26.0.0/design/segments.html">Segments</a>.</p>
+<p>After a Historical process pulls down and processes a segment from Deep Storage, Druid advertises the segment as being available for queries from the Broker. This announcement by the Historical is made via Zookeeper, in a <a href="/docs/26.0.0/configuration/index.html#path-configuration">served segments path</a>.</p>
+<p>For more information about how the Broker determines what data is available for queries, please see <a href="/docs/26.0.0/design/broker.html">Broker</a>.</p>
+<p>To make data from the segment cache available for querying as soon as possible, Historical services search the local segment cache upon startup and advertise the segments found there.</p>
+<h3><a class="anchor" aria-hidden="true" id="loading-and-serving-segments-from-cache"></a><a href="#loading-and-serving-segments-from-cache" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 [...]
+<p>The segment cache uses <a href="https://en.wikipedia.org/wiki/Mmap">memory mapping</a>. The cache consumes memory from the underlying operating system so Historicals can hold parts of segment files in memory to increase query performance at the data level. The in-memory segment cache is affected by the size of the Historical JVM, heap / direct memory buffers, and other processes on the operating system itself.</p>
+<p>At query time, if the required part of a segment file is available in the memory mapped cache or "page cache", the Historical re-uses it and reads it directly from memory. If it is not in the memory-mapped cache, the Historical reads that part of the segment from disk. In this case, there is potential for new data to flush other segment data from memory. This means that if free operating system memory is close to <code>druid.server.maxSize</code>, the more likely that segme [...]
+<p>Note that this memory-mapped segment cache is in addition to other <a href="/docs/26.0.0/querying/caching.html">query-level caches</a>.</p>
+<h3><a class="anchor" aria-hidden="true" id="querying-segments"></a><a href="#querying-segments" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2- [...]
+<p>Please see <a href="/docs/26.0.0/querying/querying.html">Querying</a> for more information on querying Historical processes.</p>
+<p>A Historical can be configured to log and report metrics for every query it services.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/design/coordinator.html"><span class="arrow-prev">← </span><span>Coordinator Process</span></a><a class="docs-next button" href="/docs/26.0.0/design/indexer.html"><span>Indexer Process</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p><a h [...]
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+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Introduction to Apache Druid · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/design/index.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version [...]
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+ ~
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+ ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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+ ~ under the License.
+ -->
+<p>Apache Druid is a real-time analytics database designed for fast slice-and-dice analytics ("<a href="http://en.wikipedia.org/wiki/Online_analytical_processing">OLAP</a>" queries) on large data sets. Most often, Druid powers use cases where real-time ingestion, fast query performance, and high uptime are important.</p>
+<p>Druid is commonly used as the database backend for GUIs of analytical applications, or for highly-concurrent APIs that need fast aggregations. Druid works best with event-oriented data.</p>
+<p>Common application areas for Druid include:</p>
+<ul>
+<li>Clickstream analytics including web and mobile analytics</li>
+<li>Network telemetry analytics including network performance monitoring</li>
+<li>Server metrics storage</li>
+<li>Supply chain analytics including manufacturing metrics</li>
+<li>Application performance metrics</li>
+<li>Digital marketing/advertising analytics</li>
+<li>Business intelligence/OLAP</li>
+</ul>
+<h2><a class="anchor" aria-hidden="true" id="key-features-of-druid"></a><a href="#key-features-of-druid" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2 [...]
+<p>Druid's core architecture combines ideas from data warehouses, timeseries databases, and logsearch systems. Some of
+Druid's key features are:</p>
+<ol>
+<li><strong>Columnar storage format.</strong> Druid uses column-oriented storage. This means it only loads the exact columns
+needed for a particular query. This greatly improves speed for queries that retrieve only a few columns. Additionally, to support fast scans and aggregations, Druid optimizes column storage for each column according to its data type.</li>
+<li><strong>Scalable distributed system.</strong> Typical Druid deployments span clusters ranging from tens to hundreds of servers. Druid can ingest data at the rate of millions of records per second while retaining trillions of records and maintaining query latencies ranging from the sub-second to a few seconds.</li>
+<li><strong>Massively parallel processing.</strong> Druid can process each query in parallel across the entire cluster.</li>
+<li><strong>Realtime or batch ingestion.</strong> Druid can ingest data either real-time or in batches. Ingested data is immediately available for
+querying.</li>
+<li><strong>Self-healing, self-balancing, easy to operate.</strong> As an operator, you add servers to scale out or
+remove servers to scale down. The Druid cluster re-balances itself automatically in the background without any downtime. If a
+Druid server fails, the system automatically routes data around the damage until the server can be replaced. Druid
+is designed to run continuously without planned downtime for any reason. This is true for configuration changes and software
+updates.</li>
+<li><strong>Cloud-native, fault-tolerant architecture that won't lose data.</strong> After ingestion, Druid safely stores a copy of your data in <a href="/docs/26.0.0/design/architecture.html#deep-storage">deep storage</a>. Deep storage is typically cloud storage, HDFS, or a shared filesystem. You can recover your data from deep storage even in the unlikely case that all Druid servers fail. For a limited failure that affects only a few Druid servers, replication ensures that queries are [...]
+<li><strong>Indexes for quick filtering.</strong> Druid uses <a href="https://roaringbitmap.org/">Roaring</a> or
+<a href="https://arxiv.org/pdf/1004.0403">CONCISE</a> compressed bitmap indexes to create indexes to enable fast filtering and searching across multiple columns.</li>
+<li><strong>Time-based partitioning.</strong> Druid first partitions data by time. You can optionally implement additional partitioning based upon other fields.
+Time-based queries only access the partitions that match the time range of the query which leads to significant performance improvements.</li>
+<li><strong>Approximate algorithms.</strong> Druid includes algorithms for approximate count-distinct, approximate ranking, and
+computation of approximate histograms and quantiles. These algorithms offer bounded memory usage and are often
+substantially faster than exact computations. For situations where accuracy is more important than speed, Druid also
+offers exact count-distinct and exact ranking.</li>
+<li><strong>Automatic summarization at ingest time.</strong> Druid optionally supports data summarization at ingestion time. This
+summarization partially pre-aggregates your data, potentially leading to significant cost savings and performance boosts.</li>
+</ol>
+<h2><a class="anchor" aria-hidden="true" id="when-to-use-druid"></a><a href="#when-to-use-druid" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2- [...]
+<p>Druid is used by many companies of various sizes for many different use cases. For more information see
+<a href="/druid-powered">Powered by Apache Druid</a>.</p>
+<p>Druid is likely a good choice if your use case matches a few of the following:</p>
+<ul>
+<li>Insert rates are very high, but updates are less common.</li>
+<li>Most of your queries are aggregation and reporting queries. For example "group by" queries. You may also have searching and
+scanning queries.</li>
+<li>You are targeting query latencies of 100ms to a few seconds.</li>
+<li>Your data has a time component. Druid includes optimizations and design choices specifically related to time.</li>
+<li>You may have more than one table, but each query hits just one big distributed table. Queries may potentially hit more
+than one smaller "lookup" table.</li>
+<li>You have high cardinality data columns, e.g. URLs, user IDs, and need fast counting and ranking over them.</li>
+<li>You want to load data from Kafka, HDFS, flat files, or object storage like Amazon S3.</li>
+</ul>
+<p>Situations where you would likely <em>not</em> want to use Druid include:</p>
+<ul>
+<li>You need low-latency updates of <em>existing</em> records using a primary key. Druid supports streaming inserts, but not streaming updates. You can perform updates using
+background batch jobs.</li>
+<li>You are building an offline reporting system where query latency is not very important.</li>
+<li>You want to do "big" joins, meaning joining one big fact table to another big fact table, and you are okay with these queries
+taking a long time to complete.</li>
+</ul>
+<h2><a class="anchor" aria-hidden="true" id="learn-more"></a><a href="#learn-more" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1 [...]
+<ul>
+<li>Try the Druid <a href="/docs/26.0.0/tutorials/index.html">Quickstart</a>.</li>
+<li>Learn more about Druid components in <a href="/docs/26.0.0/design/architecture.html">Design</a>.</li>
+<li>Read about new features and other details of <a href="https://github.com/apache/druid/releases">Druid Releases</a>.</li>
+</ul>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-next button" href="/docs/26.0.0/tutorials/index.html"><span>Quickstart (local)</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#key-features-of-druid">Key features of Druid</a></li><li><a href="#when-to-use-druid">When to use Druid</a></li><li><a href="#learn-more">Learn more</a></li></ul></nav></div><footer class="nav-footer druid-footer" id=" [...]
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diff --git a/docs/26.0.0/design/indexer.html b/docs/26.0.0/design/indexer.html
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+ el = el.parentNode;
+ }
+ }
+ }, false);
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+ var target = document.querySelector(targetSelector);
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+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/design/indexer.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Indexer Process</h1></header><article><div><span><!--
+ ~ 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
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+ ~
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+ ~ 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.
+ -->
+<blockquote>
+<p>The Indexer is an optional and <a href="/docs/26.0.0/development/experimental.html">experimental</a> feature.
+Its memory management system is still under development and will be significantly enhanced in later releases.</p>
+</blockquote>
+<p>The Apache Druid Indexer process is an alternative to the MiddleManager + Peon task execution system. Instead of forking a separate JVM process per-task, the Indexer runs tasks as separate threads within a single JVM process.</p>
+<p>The Indexer is designed to be easier to configure and deploy compared to the MiddleManager + Peon system and to better enable resource sharing across tasks.</p>
+<h3><a class="anchor" aria-hidden="true" id="configuration"></a><a href="#configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
+<p>For Apache Druid Indexer Process Configuration, see <a href="/docs/26.0.0/configuration/index.html#indexer">Indexer Configuration</a>.</p>
+<h3><a class="anchor" aria-hidden="true" id="http-endpoints"></a><a href="#http-endpoints" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
+<p>The Indexer process shares the same HTTP endpoints as the <a href="/docs/26.0.0/operations/api-reference.html#middlemanager">MiddleManager</a>.</p>
+<h3><a class="anchor" aria-hidden="true" id="running"></a><a href="#running" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1- [...]
+<pre><code class="hljs">org.apache.druid.cli.Main<span class="hljs-built_in"> server </span>indexer
+</code></pre>
+<h3><a class="anchor" aria-hidden="true" id="task-resource-sharing"></a><a href="#task-resource-sharing" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2 [...]
+<p>The following resources are shared across all tasks running inside an Indexer process.</p>
+<h4><a class="anchor" aria-hidden="true" id="query-resources"></a><a href="#query-resources" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 [...]
+<p>The query processing threads and buffers are shared across all tasks. The Indexer will serve queries from a single endpoint shared by all tasks.</p>
+<p>If <a href="/docs/26.0.0/configuration/index.html#indexer-caching">query caching</a> is enabled, the query cache is also shared across all tasks.</p>
+<h4><a class="anchor" aria-hidden="true" id="server-http-threads"></a><a href="#server-http-threads" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.2 [...]
+<p>The Indexer maintains two equally sized pools of HTTP threads.</p>
+<p>One pool is exclusively used for task control messages between the Overlord and the Indexer ("chat handler threads"). The other pool is used for handling all other HTTP requests.</p>
+<p>The size of the pools are configured by the <code>druid.server.http.numThreads</code> configuration (e.g., if this is set to 10, there will be 10 chat handler threads and 10 non-chat handler threads).</p>
+<p>In addition to these two pools, 2 separate threads are allocated for lookup handling. If lookups are not used, these threads will not be used.</p>
+<h4><a class="anchor" aria-hidden="true" id="memory-sharing"></a><a href="#memory-sharing" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
+<p>The Indexer uses the <code>druid.worker.globalIngestionHeapLimitBytes</code> configuration to impose a global heap limit across all of the tasks it is running.</p>
+<p>This global limit is evenly divided across the number of task slots configured by <code>druid.worker.capacity</code>.</p>
+<p>To apply the per-task heap limit, the Indexer will override <code>maxBytesInMemory</code> in task tuning configs (i.e., ignoring the default value or any user configured value). <code>maxRowsInMemory</code> will also be overridden to an essentially unlimited value: the Indexer does not support row limits.</p>
+<p>By default, <code>druid.worker.globalIngestionHeapLimitBytes</code> is set to 1/6th of the available JVM heap. This default is chosen to align with the default value of <code>maxBytesInMemory</code> in task tuning configs when using the MiddleManager/Peon system, which is also 1/6th of the JVM heap.</p>
+<p>The peak usage for rows held in heap memory relates to the interaction between the <code>maxBytesInMemory</code> and <code>maxPendingPersists</code> properties in the task tuning configs. When the amount of row data held in-heap by a task reaches the limit specified by <code>maxBytesInMemory</code>, a task will persist the in-heap row data. After the persist has been started, the task can again ingest up to <code>maxBytesInMemory</code> bytes worth of row data while the persist is run [...]
+<p>This means that the peak in-heap usage for row data can be up to approximately <code>maxBytesInMemory</code> * (2 + <code>maxPendingPersists</code>). The default value of <code>maxPendingPersists</code> is 0, which allows for 1 persist to run concurrently with ingestion work.</p>
+<p>The remaining portion of the heap is reserved for query processing and segment persist/merge operations, and miscellaneous heap usage.</p>
+<h4><a class="anchor" aria-hidden="true" id="concurrent-segment-persistmerge-limits"></a><a href="#concurrent-segment-persistmerge-limits" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1. [...]
+<p>To help reduce peak memory usage, the Indexer imposes a limit on the number of concurrent segment persist/merge operations across all running tasks.</p>
+<p>By default, the number of concurrent persist/merge operations is limited to (<code>druid.worker.capacity</code> / 2), rounded down. This limit can be configured with the <code>druid.worker.numConcurrentMerges</code> property.</p>
+<h3><a class="anchor" aria-hidden="true" id="current-limitations"></a><a href="#current-limitations" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.2 [...]
+<p>Separate task logs are not currently supported when using the Indexer; all task log messages will instead be logged in the Indexer process log.</p>
+<p>The Indexer currently imposes an identical memory limit on each task. In later releases, the per-task memory limit will be removed and only the global limit will apply. The limit on concurrent merges will also be removed.</p>
+<p>In later releases, per-task memory usage will be dynamically managed. Please see <a href="https://github.com/apache/druid/issues/7900">https://github.com/apache/druid/issues/7900</a> for details on future enhancements to the Indexer.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/design/historical.html"><span class="arrow-prev">← </span><span>Historical Process</span></a><a class="docs-next button" href="/docs/26.0.0/design/indexing-service.html"><span>Indexing Service</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center" [...]
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\ No newline at end of file
diff --git a/docs/26.0.0/design/indexing-service.html b/docs/26.0.0/design/indexing-service.html
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+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Indexing Service · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/design/indexing-service.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" [...]
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+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
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+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
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+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
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+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
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+ el = el.parentNode;
+ }
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+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
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+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
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+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/design/indexing-service.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Indexing Service</h1></header><article><div><span><!--
+ ~ 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
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+ ~
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+ ~
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+ ~ 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.
+ -->
+<p>The Apache Druid indexing service is a highly-available, distributed service that runs indexing related tasks.</p>
+<p>Indexing <a href="/docs/26.0.0/ingestion/tasks.html">tasks</a> create (and sometimes destroy) Druid <a href="/docs/26.0.0/design/segments.html">segments</a>. The indexing service has a master/slave like architecture.</p>
+<p>The indexing service is composed of three main components: a <a href="/docs/26.0.0/design/peons.html">Peon</a> component that can run a single task, a <a href="/docs/26.0.0/design/middlemanager.html">Middle Manager</a> component that manages Peons, and an <a href="/docs/26.0.0/design/overlord.html">Overlord</a> component that manages task distribution to MiddleManagers.
+Overlords and MiddleManagers may run on the same process or across multiple processes while MiddleManagers and Peons always run on the same process.</p>
+<p>Tasks are managed using API endpoints on the Overlord service. Please see <a href="/docs/26.0.0/operations/api-reference.html#tasks">Overlord Task API</a> for more information.</p>
+<p><img src="../assets/indexing_service.png" alt="Indexing Service" title="Indexing Service"></p>
+<h2><a class="anchor" aria-hidden="true" id="overlord"></a><a href="#overlord" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 [...]
+<p>See <a href="/docs/26.0.0/design/overlord.html">Overlord</a>.</p>
+<h2><a class="anchor" aria-hidden="true" id="middle-managers"></a><a href="#middle-managers" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 [...]
+<p>See <a href="/docs/26.0.0/design/middlemanager.html">Middle Manager</a>.</p>
+<h2><a class="anchor" aria-hidden="true" id="peons"></a><a href="#peons" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09 [...]
+<p>See <a href="/docs/26.0.0/design/peons.html">Peon</a>.</p>
+<h2><a class="anchor" aria-hidden="true" id="tasks"></a><a href="#tasks" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09 [...]
+<p>See <a href="/docs/26.0.0/ingestion/tasks.html">Tasks</a>.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/design/indexer.html"><span class="arrow-prev">← </span><span>Indexer Process</span></a><a class="docs-next button" href="/docs/26.0.0/design/middlemanager.html"><span class="function-name-prevnext">MiddleManager Process</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#overlord">Overlord</a></li><li><a href="#midd [...]
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+ if (e.target !== document.body) {
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+ if (e.keyCode === 191) {
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+ search && search.focus();
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diff --git a/docs/26.0.0/design/middlemanager.html b/docs/26.0.0/design/middlemanager.html
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+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
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+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
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+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
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+ el = el.parentNode;
+ }
+ }
+ }, false);
+
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+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
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+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
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+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/design/middlemanager.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">MiddleManager Process</h1></header><article><div><span><!--
+ ~ 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
+ ~
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+ ~
+ ~ 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.
+ -->
+<h3><a class="anchor" aria-hidden="true" id="configuration"></a><a href="#configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
+<p>For Apache Druid MiddleManager Process Configuration, see <a href="/docs/26.0.0/configuration/index.html#middlemanager-and-peons">Indexing Service Configuration</a>.</p>
+<p>For basic tuning guidance for the MiddleManager process, see <a href="/docs/26.0.0/operations/basic-cluster-tuning.html#middlemanager">Basic cluster tuning</a>.</p>
+<h3><a class="anchor" aria-hidden="true" id="http-endpoints"></a><a href="#http-endpoints" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
+<p>For a list of API endpoints supported by the MiddleManager, please see the <a href="/docs/26.0.0/operations/api-reference.html#middlemanager">API reference</a>.</p>
+<h3><a class="anchor" aria-hidden="true" id="overview"></a><a href="#overview" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 [...]
+<p>The MiddleManager process is a worker process that executes submitted tasks. Middle Managers forward tasks to Peons that run in separate JVMs.
+The reason we have separate JVMs for tasks is for resource and log isolation. Each <a href="/docs/26.0.0/design/peons.html">Peon</a> is capable of running only one task at a time, however, a MiddleManager may have multiple Peons.</p>
+<h3><a class="anchor" aria-hidden="true" id="running"></a><a href="#running" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1- [...]
+<pre><code class="hljs">org.apache.druid.cli.Main<span class="hljs-built_in"> server </span>middleManager
+</code></pre>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/design/indexing-service.html"><span class="arrow-prev">← </span><span>Indexing Service</span></a><a class="docs-next button" href="/docs/26.0.0/design/overlord.html"><span>Overlord Process</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p> [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/design/overlord.html b/docs/26.0.0/design/overlord.html
new file mode 100644
index 00000000..b8ed44c0
--- /dev/null
+++ b/docs/26.0.0/design/overlord.html
@@ -0,0 +1,120 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Overlord Process · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/design/overlord.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/design/overlord.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Overlord Process</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<h3><a class="anchor" aria-hidden="true" id="configuration"></a><a href="#configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
+<p>For Apache Druid Overlord Process Configuration, see <a href="/docs/26.0.0/configuration/index.html#overlord">Overlord Configuration</a>.</p>
+<p>For basic tuning guidance for the Overlord process, see <a href="/docs/26.0.0/operations/basic-cluster-tuning.html#overlord">Basic cluster tuning</a>.</p>
+<h3><a class="anchor" aria-hidden="true" id="http-endpoints"></a><a href="#http-endpoints" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
+<p>For a list of API endpoints supported by the Overlord, please see the <a href="/docs/26.0.0/operations/api-reference.html#overlord">API reference</a>.</p>
+<h3><a class="anchor" aria-hidden="true" id="overview"></a><a href="#overview" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 [...]
+<p>The Overlord process is responsible for accepting tasks, coordinating task distribution, creating locks around tasks, and returning statuses to callers. Overlord can be configured to run in one of two modes - local or remote (local being default).
+In local mode Overlord is also responsible for creating Peons for executing tasks. When running the Overlord in local mode, all MiddleManager and Peon configurations must be provided as well.
+Local mode is typically used for simple workflows. In remote mode, the Overlord and MiddleManager are run in separate processes and you can run each on a different server.
+This mode is recommended if you intend to use the indexing service as the single endpoint for all Druid indexing.</p>
+<h3><a class="anchor" aria-hidden="true" id="blacklisted-workers"></a><a href="#blacklisted-workers" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.2 [...]
+<p>If a MiddleManager has task failures above a threshold, the Overlord will blacklist these MiddleManagers. No more than 20% of the MiddleManagers can be blacklisted. Blacklisted MiddleManagers will be periodically whitelisted.</p>
+<p>The following variables can be used to set the threshold and blacklist timeouts.</p>
+<pre><code class="hljs"><span class="hljs-selector-tag">druid</span><span class="hljs-selector-class">.indexer</span><span class="hljs-selector-class">.runner</span><span class="hljs-selector-class">.maxRetriesBeforeBlacklist</span>
+<span class="hljs-selector-tag">druid</span><span class="hljs-selector-class">.indexer</span><span class="hljs-selector-class">.runner</span><span class="hljs-selector-class">.workerBlackListBackoffTime</span>
+<span class="hljs-selector-tag">druid</span><span class="hljs-selector-class">.indexer</span><span class="hljs-selector-class">.runner</span><span class="hljs-selector-class">.workerBlackListCleanupPeriod</span>
+<span class="hljs-selector-tag">druid</span><span class="hljs-selector-class">.indexer</span><span class="hljs-selector-class">.runner</span><span class="hljs-selector-class">.maxPercentageBlacklistWorkers</span>
+</code></pre>
+<h3><a class="anchor" aria-hidden="true" id="autoscaling"></a><a href="#autoscaling" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42 [...]
+<p>The Autoscaling mechanisms currently in place are tightly coupled with our deployment infrastructure but the framework should be in place for other implementations. We are highly open to new implementations or extensions of the existing mechanisms. In our own deployments, MiddleManager processes are Amazon AWS EC2 nodes and they are provisioned to register themselves in a <a href="https://github.com/ning/galaxy">galaxy</a> environment.</p>
+<p>If autoscaling is enabled, new MiddleManagers may be added when a task has been in pending state for too long. MiddleManagers may be terminated if they have not run any tasks for a period of time.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/design/middlemanager.html"><span class="arrow-prev">← </span><span class="function-name-prevnext">MiddleManager Process</span></a><a class="docs-next button" href="/docs/26.0.0/design/router.html"><span>Router Process</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container" [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/design/peons.html b/docs/26.0.0/design/peons.html
new file mode 100644
index 00000000..df78dd40
--- /dev/null
+++ b/docs/26.0.0/design/peons.html
@@ -0,0 +1,112 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Peons · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/design/peons.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content="26.0.0" /><m [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/design/peons.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Peons</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<h3><a class="anchor" aria-hidden="true" id="configuration"></a><a href="#configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
+<p>For Apache Druid Peon Configuration, see <a href="/docs/26.0.0/configuration/index.html#peon-query-configuration">Peon Query Configuration</a> and <a href="/docs/26.0.0/configuration/index.html#additional-peon-configuration">Additional Peon Configuration</a>.</p>
+<p>For basic tuning guidance for MiddleManager tasks, see <a href="/docs/26.0.0/operations/basic-cluster-tuning.html#task-configurations">Basic cluster tuning</a>.</p>
+<h3><a class="anchor" aria-hidden="true" id="http-endpoints"></a><a href="#http-endpoints" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
+<p>For a list of API endpoints supported by the Peon, please see the <a href="/docs/26.0.0/operations/api-reference.html#peon">Peon API reference</a>.</p>
+<p>Peons run a single task in a single JVM. MiddleManager is responsible for creating Peons for running tasks.
+Peons should rarely (if ever for testing purposes) be run on their own.</p>
+<h3><a class="anchor" aria-hidden="true" id="running"></a><a href="#running" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1- [...]
+<p>The Peon should very rarely ever be run independent of the MiddleManager unless for development purposes.</p>
+<pre><code class="hljs"><span class="hljs-selector-tag">org</span><span class="hljs-selector-class">.apache</span><span class="hljs-selector-class">.druid</span><span class="hljs-selector-class">.cli</span><span class="hljs-selector-class">.Main</span> <span class="hljs-selector-tag">internal</span> <span class="hljs-selector-tag">peon</span> <<span class="hljs-selector-tag">task_file</span>> <<span class="hljs-selector-tag">status_file</span>>
+</code></pre>
+<p>The task file contains the task JSON object.
+The status file indicates where the task status will be output.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/design/router.html"><span class="arrow-prev">← </span><span>Router Process</span></a><a class="docs-next button" href="/docs/26.0.0/development/extensions-core/approximate-histograms.html"><span>Approximate Histogram aggregators</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class= [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
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+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
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\ No newline at end of file
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+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../ingestion/standalone-realtime.html">
+<meta http-equiv="refresh" content="0; url=../ingestion/standalone-realtime.html">
+<h1>Redirecting...</h1>
+<a href="../ingestion/standalone-realtime.html">Click here if you are not redirected.</a>
+<script>location="../ingestion/standalone-realtime.html"</script>
diff --git a/docs/26.0.0/design/processes.html b/docs/26.0.0/design/processes.html
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+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Processes and servers · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/design/processes.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" c [...]
+ window.dataLayer = window.dataLayer || [];
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+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
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+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/design/processes.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Processes and servers</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<h2><a class="anchor" aria-hidden="true" id="process-types"></a><a href="#process-types" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
+<p>Druid has several process types:</p>
+<ul>
+<li><a href="/docs/26.0.0/design/coordinator.html">Coordinator</a></li>
+<li><a href="/docs/26.0.0/design/overlord.html">Overlord</a></li>
+<li><a href="/docs/26.0.0/design/broker.html">Broker</a></li>
+<li><a href="/docs/26.0.0/design/historical.html">Historical</a></li>
+<li><a href="/docs/26.0.0/design/middlemanager.html">MiddleManager</a> and <a href="/docs/26.0.0/design/peons.html">Peons</a></li>
+<li><a href="/docs/26.0.0/design/indexer.html">Indexer (Optional)</a></li>
+<li><a href="/docs/26.0.0/design/router.html">Router (Optional)</a></li>
+</ul>
+<h2><a class="anchor" aria-hidden="true" id="server-types"></a><a href="#server-types" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
+<p>Druid processes can be deployed any way you like, but for ease of deployment we suggest organizing them into three server types:</p>
+<ul>
+<li><strong>Master</strong></li>
+<li><strong>Query</strong></li>
+<li><strong>Data</strong></li>
+</ul>
+<p><img src="../assets/druid-architecture.png" width="800"/></p>
+<p>This section describes the Druid processes and the suggested Master/Query/Data server organization, as shown in the architecture diagram above.</p>
+<h3><a class="anchor" aria-hidden="true" id="master-server"></a><a href="#master-server" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
+<p>A Master server manages data ingestion and availability: it is responsible for starting new ingestion jobs and coordinating availability of data on the "Data servers" described below.</p>
+<p>Within a Master server, functionality is split between two processes, the Coordinator and Overlord.</p>
+<h4><a class="anchor" aria-hidden="true" id="coordinator-process"></a><a href="#coordinator-process" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.2 [...]
+<p><a href="/docs/26.0.0/design/coordinator.html"><strong>Coordinator</strong></a> processes watch over the Historical processes on the Data servers. They are responsible for assigning segments to specific servers, and for ensuring segments are well-balanced across Historicals.</p>
+<h4><a class="anchor" aria-hidden="true" id="overlord-process"></a><a href="#overlord-process" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2. [...]
+<p><a href="/docs/26.0.0/design/overlord.html"><strong>Overlord</strong></a> processes watch over the MiddleManager processes on the Data servers and are the controllers of data ingestion into Druid. They are responsible for assigning ingestion tasks to MiddleManagers and for coordinating segment publishing.</p>
+<h3><a class="anchor" aria-hidden="true" id="query-server"></a><a href="#query-server" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
+<p>A Query server provides the endpoints that users and client applications interact with, routing queries to Data servers or other Query servers (and optionally proxied Master server requests as well).</p>
+<p>Within a Query server, functionality is split between two processes, the Broker and Router.</p>
+<h4><a class="anchor" aria-hidden="true" id="broker-process"></a><a href="#broker-process" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
+<p><a href="/docs/26.0.0/design/broker.html"><strong>Broker</strong></a> processes receive queries from external clients and forward those queries to Data servers. When Brokers receive results from those subqueries, they merge those results and return them to the
+caller. End users typically query Brokers rather than querying Historicals or MiddleManagers processes on Data servers directly.</p>
+<h4><a class="anchor" aria-hidden="true" id="router-process-optional"></a><a href="#router-process-optional" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 [...]
+<p><a href="/docs/26.0.0/design/router.html"><strong>Router</strong></a> processes are <em>optional</em> processes that provide a unified API gateway in front of Druid Brokers,
+Overlords, and Coordinators. They are optional since you can also simply contact the Druid Brokers, Overlords, and
+Coordinators directly.</p>
+<p>The Router also runs the <a href="/docs/26.0.0/operations/web-console.html">web console</a>, a management UI for datasources, segments, tasks, data processes (Historicals and MiddleManagers), and coordinator dynamic configuration. The user can also run SQL and native Druid queries within the console.</p>
+<h3><a class="anchor" aria-hidden="true" id="data-server"></a><a href="#data-server" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42 [...]
+<p>A Data server executes ingestion jobs and stores queryable data.</p>
+<p>Within a Data server, functionality is split between two processes, the Historical and MiddleManager.</p>
+<h3><a class="anchor" aria-hidden="true" id="historical-process"></a><a href="#historical-process" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22- [...]
+<p><a href="/docs/26.0.0/design/historical.html"><strong>Historical</strong></a> processes are the workhorses that handle storage and querying on "historical" data
+(including any streaming data that has been in the system long enough to be committed). Historical processes
+download segments from deep storage and respond to queries about these segments. They don't accept writes.</p>
+<h3><a class="anchor" aria-hidden="true" id="middle-manager-process"></a><a href="#middle-manager-process" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0 [...]
+<p><a href="/docs/26.0.0/design/middlemanager.html"><strong>MiddleManager</strong></a> processes handle ingestion of new data into the cluster. They are responsible
+for reading from external data sources and publishing new Druid segments.</p>
+<h4><a class="anchor" aria-hidden="true" id="peon-processes"></a><a href="#peon-processes" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
+<p><a href="/docs/26.0.0/design/peons.html"><strong>Peon</strong></a> processes are task execution engines spawned by MiddleManagers. Each Peon runs a separate JVM and is responsible for executing a single task. Peons always run on the same host as the MiddleManager that spawned them.</p>
+<h3><a class="anchor" aria-hidden="true" id="indexer-process-optional"></a><a href="#indexer-process-optional" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-. [...]
+<p><a href="/docs/26.0.0/design/indexer.html"><strong>Indexer</strong></a> processes are an alternative to MiddleManagers and Peons. Instead of
+forking separate JVM processes per-task, the Indexer runs tasks as individual threads within a single JVM process.</p>
+<p>The Indexer is designed to be easier to configure and deploy compared to the MiddleManager + Peon system and to
+better enable resource sharing across tasks. The Indexer is a newer feature and is currently designated
+<a href="/docs/26.0.0/development/experimental.html">experimental</a> due to the fact that its memory management system is still under
+development. It will continue to mature in future versions of Druid.</p>
+<p>Typically, you would deploy either MiddleManagers or Indexers, but not both.</p>
+<h2><a class="anchor" aria-hidden="true" id="pros-and-cons-of-colocation"></a><a href="#pros-and-cons-of-colocation" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 1 [...]
+<p>Druid processes can be colocated based on the Master/Data/Query server organization as
+described above. This organization generally results in better utilization of
+hardware resources for most clusters.</p>
+<p>For very large scale clusters, however, it can be desirable to split the Druid processes
+such that they run on individual servers to avoid resource contention.</p>
+<p>This section describes guidelines and configuration parameters related to process colocation.</p>
+<h3><a class="anchor" aria-hidden="true" id="coordinators-and-overlords"></a><a href="#coordinators-and-overlords" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H [...]
+<p>The workload on the Coordinator process tends to increase with the number of segments in the cluster. The Overlord's workload also increases based on the number of segments in the cluster, but to a lesser degree than the Coordinator.</p>
+<p>In clusters with very high segment counts, it can make sense to separate the Coordinator and Overlord processes to provide more resources for the Coordinator's segment balancing workload.</p>
+<h4><a class="anchor" aria-hidden="true" id="unified-process"></a><a href="#unified-process" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 [...]
+<p>The Coordinator and Overlord processes can be run as a single combined process by setting the <code>druid.coordinator.asOverlord.enabled</code> property.</p>
+<p>Please see <a href="/docs/26.0.0/configuration/index.html#coordinator-operation">Coordinator Configuration: Operation</a> for details.</p>
+<h3><a class="anchor" aria-hidden="true" id="historicals-and-middlemanagers"></a><a href="#historicals-and-middlemanagers" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 1 [...]
+<p>With higher levels of ingestion or query load, it can make sense to deploy the Historical and MiddleManager processes on separate hosts to to avoid CPU and memory contention.</p>
+<p>The Historical also benefits from having free memory for memory mapped segments, which can be another reason to deploy the Historical and MiddleManager processes separately.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/design/segments.html"><span class="arrow-prev">← </span><span>Segments</span></a><a class="docs-next button" href="/docs/26.0.0/dependencies/deep-storage.html"><span>Deep storage</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#process-types">Process types</a></li><li><a href="#server-types">Server types</a><ul c [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/design/realtime.html b/docs/26.0.0/design/realtime.html
new file mode 100644
index 00000000..2f57fca1
--- /dev/null
+++ b/docs/26.0.0/design/realtime.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../ingestion/standalone-realtime.html">
+<meta http-equiv="refresh" content="0; url=../ingestion/standalone-realtime.html">
+<h1>Redirecting...</h1>
+<a href="../ingestion/standalone-realtime.html">Click here if you are not redirected.</a>
+<script>location="../ingestion/standalone-realtime.html"</script>
diff --git a/docs/latest/design/router.html b/docs/26.0.0/design/router.html
similarity index 55%
copy from docs/latest/design/router.html
copy to docs/26.0.0/design/router.html
index a5c0e287..9c3ecbab 100644
--- a/docs/latest/design/router.html
+++ b/docs/26.0.0/design/router.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Router Process · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/design/router.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content="25 [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Router Process · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/design/router.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content="26 [...]
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'UA-131010415-1');
- </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
var coll = document.getElementsByClassName('collapsible');
var checkActiveCategory = true;
for (var i = 0; i < coll.length; i++) {
@@ -77,14 +77,14 @@
~ specific language governing permissions and limitations
~ under the License.
-->
-<p>The Apache Druid Router process can be used to route queries to different Broker processes. By default, the broker routes queries based on how <a href="/docs/latest/operations/rule-configuration.html">Rules</a> are set up. For example, if 1 month of recent data is loaded into a <code>hot</code> cluster, queries that fall within the recent month can be routed to a dedicated set of brokers. Queries outside this range are routed to another set of brokers. This set up provides query isola [...]
+<p>The Apache Druid Router process can be used to route queries to different Broker processes. By default, the broker routes queries based on how <a href="/docs/26.0.0/operations/rule-configuration.html">Rules</a> are set up. For example, if 1 month of recent data is loaded into a <code>hot</code> cluster, queries that fall within the recent month can be routed to a dedicated set of brokers. Queries outside this range are routed to another set of brokers. This set up provides query isola [...]
<p>For query routing purposes, you should only ever need the Router process if you have a Druid cluster well into the terabyte range.</p>
-<p>In addition to query routing, the Router also runs the <a href="/docs/latest/operations/web-console.html">web console</a>, a management UI for datasources, segments, tasks, data processes (Historicals and MiddleManagers), and coordinator dynamic configuration. The user can also run SQL and native Druid queries within the console.</p>
+<p>In addition to query routing, the Router also runs the <a href="/docs/26.0.0/operations/web-console.html">web console</a>, a management UI for datasources, segments, tasks, data processes (Historicals and MiddleManagers), and coordinator dynamic configuration. The user can also run SQL and native Druid queries within the console.</p>
<h3><a class="anchor" aria-hidden="true" id="configuration"></a><a href="#configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
-<p>For Apache Druid Router Process Configuration, see <a href="/docs/latest/configuration/index.html#router">Router Configuration</a>.</p>
-<p>For basic tuning guidance for the Router process, see <a href="/docs/latest/operations/basic-cluster-tuning.html#router">Basic cluster tuning</a>.</p>
+<p>For Apache Druid Router Process Configuration, see <a href="/docs/26.0.0/configuration/index.html#router">Router Configuration</a>.</p>
+<p>For basic tuning guidance for the Router process, see <a href="/docs/26.0.0/operations/basic-cluster-tuning.html#router">Basic cluster tuning</a>.</p>
<h3><a class="anchor" aria-hidden="true" id="http-endpoints"></a><a href="#http-endpoints" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
-<p>For a list of API endpoints supported by the Router, see <a href="/docs/latest/operations/api-reference.html#router">Router API</a>.</p>
+<p>For a list of API endpoints supported by the Router, see <a href="/docs/26.0.0/operations/api-reference.html#router">Router API</a>.</p>
<h3><a class="anchor" aria-hidden="true" id="running"></a><a href="#running" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1- [...]
<pre><code class="hljs">org.apache.druid.cli.Main<span class="hljs-built_in"> server </span>router
</code></pre>
@@ -153,7 +153,7 @@ This strategy can route both Native and SQL queries (when enabled).</p>
}
</code></pre>
<blockquote>
-<p>JavaScript-based functionality is disabled by default. Please refer to the Druid <a href="/docs/latest/development/javascript.html">JavaScript programming guide</a> for guidelines about using Druid's JavaScript functionality, including instructions on how to enable it.</p>
+<p>JavaScript-based functionality is disabled by default. Please refer to the Druid <a href="/docs/26.0.0/development/javascript.html">JavaScript programming guide</a> for guidelines about using Druid's JavaScript functionality, including instructions on how to enable it.</p>
</blockquote>
<h3><a class="anchor" aria-hidden="true" id="routing-of-sql-queries-using-strategies"></a><a href="#routing-of-sql-queries-using-strategies" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 [...]
<p>To enable routing of SQL queries using strategies, set <code>druid.router.sql.enable</code> to <code>true</code>. The broker service for a
@@ -219,7 +219,7 @@ Druid always routes Avatica JDBC requests based on connection ID.</p>
<span class="hljs-attr">druid.server.http.numThreads</span>=<span class="hljs-number">100</span>
</code></pre>
-</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/latest/design/overlord.html"><span class="arrow-prev">← </span><span>Overlord Process</span></a><a class="docs-next button" href="/docs/latest/design/peons.html"><span>Peons</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p><a href="/technology"> [...]
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/design/overlord.html"><span class="arrow-prev">← </span><span>Overlord Process</span></a><a class="docs-next button" href="/docs/26.0.0/design/peons.html"><span>Peons</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p><a href="/technology"> [...]
document.addEventListener('keyup', function(e) {
if (e.target !== document.body) {
return;
@@ -236,6 +236,6 @@ Druid always routes Avatica JDBC requests based on connection ID.</p>
apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
indexName: 'apache_druid',
inputSelector: '#search_input_react',
- algoliaOptions: {"facetFilters":["language:en","version:25.0.0"]}
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
});
</script></body></html>
\ No newline at end of file
diff --git a/docs/latest/design/segments.html b/docs/26.0.0/design/segments.html
similarity index 55%
copy from docs/latest/design/segments.html
copy to docs/26.0.0/design/segments.html
index 95036451..d14fd09d 100644
--- a/docs/latest/design/segments.html
+++ b/docs/26.0.0/design/segments.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Segments · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/design/segments.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content="25.0.0 [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Segments · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/design/segments.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content="26.0.0 [...]
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'UA-131010415-1');
- </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
var coll = document.getElementsByClassName('collapsible');
var checkActiveCategory = true;
for (var i = 0; i < coll.length; i++) {
@@ -77,8 +77,8 @@
~ specific language governing permissions and limitations
~ under the License.
-->
-<p>Apache Druid stores its data and indexes in <em>segment files</em> partitioned by time. Druid creates a segment for each segment interval that contains data. If an interval is empty—that is, containing no rows—no segment exists for that time interval. Druid may create multiple segments for the same interval if you ingest data for that period via different ingestion jobs. <a href="/docs/latest/data-management/compaction.html">Compaction</a> is the Druid process that attempts to combine [...]
-<p>The time interval is configurable in the <code>segmentGranularity</code> parameter of the <a href="/docs/latest/ingestion/ingestion-spec.html#granularityspec"><code>granularitySpec</code></a>.</p>
+<p>Apache Druid stores its data and indexes in <em>segment files</em> partitioned by time. Druid creates a segment for each segment interval that contains data. If an interval is empty—that is, containing no rows—no segment exists for that time interval. Druid may create multiple segments for the same interval if you ingest data for that period via different ingestion jobs. <a href="/docs/26.0.0/data-management/compaction.html">Compaction</a> is the Druid process that attempts to combine [...]
+<p>The time interval is configurable in the <code>segmentGranularity</code> parameter of the <a href="/docs/26.0.0/ingestion/ingestion-spec.html#granularityspec"><code>granularitySpec</code></a>.</p>
<p>For Druid to operate well under heavy query load, it is important for the segment
file size to be within the recommended range of 300-700 MB. If your
segment files are larger than this range, then consider either
@@ -86,7 +86,7 @@ changing the granularity of the segment time interval or partitioning your
data and/or adjusting the <code>targetRowsPerSegment</code> in your <code>partitionsSpec</code>.
A good starting point for this parameter is 5 million rows.
See the Sharding section below and the "Partitioning specification" section of
-the <a href="/docs/latest/ingestion/hadoop.html#partitionsspec">Batch ingestion</a> documentation
+the <a href="/docs/26.0.0/ingestion/hadoop.html#partitionsspec">Batch ingestion</a> documentation
for more guidance.</p>
<h2><a class="anchor" aria-hidden="true" id="segment-file-structure"></a><a href="#segment-file-structure" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0 [...]
<p>Segment files are <em>columnar</em>: the data for each column is laid out in
@@ -166,7 +166,7 @@ bitmap. If a row has more than one value for a column, its entry in
the list is an array of values. Additionally, a row with <em>n</em> values in the list has <em>n</em> non-zero valued entries in bitmaps.</p>
<h2><a class="anchor" aria-hidden="true" id="compression"></a><a href="#compression" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42 [...]
<p>Druid uses LZ4 by default to compress blocks of values for string, long, float, and double columns. Druid uses Roaring to compress bitmaps for string columns and numeric null values. We recommend that you use these defaults unless you've experimented with your data and query patterns suggest that non-default options will perform better in your specific case.</p>
-<p>Druid also supports Concise bitmap compression. For string column bitmaps, the differences between using Roaring and Concise are most pronounced for high cardinality columns. In this case, Roaring is substantially faster on filters that match many values, but in some cases Concise can have a lower footprint due to the overhead of the Roaring format (but is still slower when many values are matched). You configure compression at the segment level, not for individual columns. See <a hre [...]
+<p>Druid also supports Concise bitmap compression. For string column bitmaps, the differences between using Roaring and Concise are most pronounced for high cardinality columns. In this case, Roaring is substantially faster on filters that match many values, but in some cases Concise can have a lower footprint due to the overhead of the Roaring format (but is still slower when many values are matched). You configure compression at the segment level, not for individual columns. See <a hre [...]
<h2><a class="anchor" aria-hidden="true" id="segment-identification"></a><a href="#segment-identification" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0 [...]
<p>Segment identifiers typically contain the segment datasource, interval start time (in ISO 8601 format), interval end time (in ISO 8601 format), and version information. If data is additionally sharded beyond a time range, the segment identifier also contains a partition number:</p>
<p><code>datasource_intervalStart_intervalEnd_version_partitionNum</code></p>
@@ -219,7 +219,7 @@ foo_2015<span class="hljs-number">-01</span><span class="hljs-number">-02</span>
foo_2015<span class="hljs-number">-01</span><span class="hljs-number">-03</span>/<span class="hljs-number">2015</span><span class="hljs-number">-01</span><span class="hljs-number">-04</span>_v1_2
</code></pre>
<p>In this case, queries may hit a mixture of <code>v1</code> and <code>v2</code> segments.</p>
-</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/latest/design/architecture.html"><span class="arrow-prev">← </span><span>Design</span></a><a class="docs-next button" href="/docs/latest/design/processes.html"><span>Processes and servers</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#segment-file-structure">Segment file structure</a></li><li><a href="#handling-null-v [...]
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/design/architecture.html"><span class="arrow-prev">← </span><span>Design</span></a><a class="docs-next button" href="/docs/26.0.0/design/processes.html"><span>Processes and servers</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#segment-file-structure">Segment file structure</a></li><li><a href="#handling-null-v [...]
document.addEventListener('keyup', function(e) {
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return;
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apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
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+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
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\ No newline at end of file
diff --git a/docs/26.0.0/development/approximate-histograms.html b/docs/26.0.0/development/approximate-histograms.html
new file mode 100644
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--- /dev/null
+++ b/docs/26.0.0/development/approximate-histograms.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="extensions-core/approximate-histograms.html">
+<meta http-equiv="refresh" content="0; url=extensions-core/approximate-histograms.html">
+<h1>Redirecting...</h1>
+<a href="extensions-core/approximate-histograms.html">Click here if you are not redirected.</a>
+<script>location="extensions-core/approximate-histograms.html"</script>
diff --git a/docs/26.0.0/development/build.html b/docs/26.0.0/development/build.html
new file mode 100644
index 00000000..d746f04e
--- /dev/null
+++ b/docs/26.0.0/development/build.html
@@ -0,0 +1,156 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Build from source · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/development/build.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" cont [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/development/build.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Build from source</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>You can build Apache Druid directly from source. Use the version of this page
+that matches the version you want to build.
+For building the latest code in master, follow the latest version of this page
+<a href="https://github.com/apache/druid/blob/master/docs/development/build.md">here</a>:
+make sure it has <code>/master/</code> in the URL.</p>
+<h4><a class="anchor" aria-hidden="true" id="prerequisites"></a><a href="#prerequisites" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
+<h5><a class="anchor" aria-hidden="true" id="installing-java-and-maven"></a><a href="#installing-java-and-maven" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c [...]
+<ul>
+<li>JDK 8, 8u92+ or JDK 11. See our <a href="/docs/26.0.0/operations/java.html">Java documentation</a> for information about obtaining a JDK.</li>
+<li><a href="http://maven.apache.org/download.cgi">Maven version 3.x</a></li>
+</ul>
+<h5><a class="anchor" aria-hidden="true" id="other-dependencies"></a><a href="#other-dependencies" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22- [...]
+<ul>
+<li>Distribution builds require Python 3.x and the <code>pyyaml</code> module.</li>
+<li>Integration tests require <code>pyyaml</code> version 5.1 or later.</li>
+</ul>
+<h5><a class="anchor" aria-hidden="true" id="downloading-the-source"></a><a href="#downloading-the-source" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0 [...]
+<pre><code class="hljs css language-bash">git <span class="hljs-built_in">clone</span> git@github.com:apache/druid.git
+<span class="hljs-built_in">cd</span> druid
+</code></pre>
+<h4><a class="anchor" aria-hidden="true" id="building-from-source"></a><a href="#building-from-source" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1 [...]
+<p>The basic command to build Druid from source is:</p>
+<pre><code class="hljs css language-bash">mvn clean install
+</code></pre>
+<p>This will run static analysis, unit tests, compile classes, and package the projects into JARs. It will <em>not</em> generate the source or binary distribution tarball.</p>
+<p>In addition to the basic stages, you may also want to add the following profiles and properties:</p>
+<ul>
+<li><strong>-Pdist</strong> - Distribution profile: Generates the binary distribution tarball by pulling in core extensions and dependencies and packaging the files as <code>distribution/target/apache-druid-x.x.x-bin.tar.gz</code></li>
+<li><strong>-Papache-release</strong> - Apache release profile: Generates GPG signature and checksums, and builds the source distribution tarball as <code>distribution/target/apache-druid-x.x.x-src.tar.gz</code></li>
+<li><strong>-Prat</strong> - Apache Rat profile: Runs the Apache Rat license audit tool</li>
+<li><strong>-DskipTests</strong> - Skips unit tests (which reduces build time)</li>
+<li><strong>-Dweb.console.skip=true</strong> - Skip front end project</li>
+</ul>
+<p>Putting these together, if you wish to build the source and binary distributions with signatures and checksums, audit licenses, and skip the unit tests, you would run:</p>
+<pre><code class="hljs css language-bash">mvn clean install -Papache-release,dist,rat -DskipTests
+</code></pre>
+<h3><a class="anchor" aria-hidden="true" id="building-hadoop-3-distribution"></a><a href="#building-hadoop-3-distribution" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 1 [...]
+<p>By default, druid ships hadoop 2.x.x jars along with the distribution. Exact version can be found in the
+main <a href="https://github.com/apache/druid/blob/master/pom.xml">pom</a>. To build druid with hadoop 3.x.x jars, hadoop3 profile
+needs to be activated.</p>
+<p>To generate build with hadoop 3 dependencies, run:</p>
+<pre><code class="hljs css language-bash">mvn clean install -Phadoop3
+</code></pre>
+<p>To generate distribution with hadoop3 dependencies, run :</p>
+<pre><code class="hljs css language-bash">mvn clean install -Papache-release,dist-hadoop3,rat,hadoop3 -DskipTests
+</code></pre>
+<h4><a class="anchor" aria-hidden="true" id="potential-issues"></a><a href="#potential-issues" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2. [...]
+<h5><a class="anchor" aria-hidden="true" id="missing-pyyaml"></a><a href="#missing-pyyaml" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
+<p>You are building Druid from source following the instructions on this page but you get</p>
+<pre><code class="hljs">[ERROR] Failed to<span class="hljs-built_in"> execute </span>goal org.codehaus.mojo:exec-maven-plugin:1.6.0:exec (generate-binary-license) on project distribution: Command execution failed.: Process exited with an error: 1 (Exit value: 1) -> [Help 1]
+</code></pre>
+<p>Resolution: Make sure you have Python installed as well as the <code>yaml</code> module:</p>
+<pre><code class="hljs css language-bash">pip install pyyaml
+</code></pre>
+<p>On some systems, ensure you use the Python 3.x version of <code>pip</code>:</p>
+<pre><code class="hljs css language-bash">pip3 install pyyaml
+</code></pre>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/development/javascript.html"><span class="arrow-prev">← </span><span class="function-name-prevnext">JavaScript functionality</span></a><a class="docs-next button" href="/docs/26.0.0/development/versioning.html"><span>Versioning</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class=" [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/development/community-extensions/azure.html b/docs/26.0.0/development/community-extensions/azure.html
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+++ b/docs/26.0.0/development/community-extensions/azure.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../extensions-core/azure.html">
+<meta http-equiv="refresh" content="0; url=../extensions-core/azure.html">
+<h1>Redirecting...</h1>
+<a href="../extensions-core/azure.html">Click here if you are not redirected.</a>
+<script>location="../extensions-core/azure.html"</script>
diff --git a/docs/26.0.0/development/community-extensions/cassandra.html b/docs/26.0.0/development/community-extensions/cassandra.html
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@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../extensions-contrib/cassandra.html">
+<meta http-equiv="refresh" content="0; url=../extensions-contrib/cassandra.html">
+<h1>Redirecting...</h1>
+<a href="../extensions-contrib/cassandra.html">Click here if you are not redirected.</a>
+<script>location="../extensions-contrib/cassandra.html"</script>
diff --git a/docs/26.0.0/development/community-extensions/cloudfiles.html b/docs/26.0.0/development/community-extensions/cloudfiles.html
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+++ b/docs/26.0.0/development/community-extensions/cloudfiles.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../extensions-contrib/cloudfiles.html">
+<meta http-equiv="refresh" content="0; url=../extensions-contrib/cloudfiles.html">
+<h1>Redirecting...</h1>
+<a href="../extensions-contrib/cloudfiles.html">Click here if you are not redirected.</a>
+<script>location="../extensions-contrib/cloudfiles.html"</script>
diff --git a/docs/26.0.0/development/community-extensions/graphite.html b/docs/26.0.0/development/community-extensions/graphite.html
new file mode 100644
index 00000000..dc318948
--- /dev/null
+++ b/docs/26.0.0/development/community-extensions/graphite.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../extensions-contrib/graphite.html">
+<meta http-equiv="refresh" content="0; url=../extensions-contrib/graphite.html">
+<h1>Redirecting...</h1>
+<a href="../extensions-contrib/graphite.html">Click here if you are not redirected.</a>
+<script>location="../extensions-contrib/graphite.html"</script>
diff --git a/docs/26.0.0/development/community-extensions/kafka-simple.html b/docs/26.0.0/development/community-extensions/kafka-simple.html
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+++ b/docs/26.0.0/development/community-extensions/kafka-simple.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../extensions-core/kafka-ingestion.html">
+<meta http-equiv="refresh" content="0; url=../extensions-core/kafka-ingestion.html">
+<h1>Redirecting...</h1>
+<a href="../extensions-core/kafka-ingestion.html">Click here if you are not redirected.</a>
+<script>location="../extensions-core/kafka-ingestion.html"</script>
diff --git a/docs/26.0.0/development/community-extensions/rabbitmq.html b/docs/26.0.0/development/community-extensions/rabbitmq.html
new file mode 100644
index 00000000..179d16a8
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+++ b/docs/26.0.0/development/community-extensions/rabbitmq.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../extensions-core/kafka-ingestion.html">
+<meta http-equiv="refresh" content="0; url=../extensions-core/kafka-ingestion.html">
+<h1>Redirecting...</h1>
+<a href="../extensions-core/kafka-ingestion.html">Click here if you are not redirected.</a>
+<script>location="../extensions-core/kafka-ingestion.html"</script>
diff --git a/docs/26.0.0/development/datasketches-aggregators.html b/docs/26.0.0/development/datasketches-aggregators.html
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+++ b/docs/26.0.0/development/datasketches-aggregators.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="extensions-core/datasketches-extension.html">
+<meta http-equiv="refresh" content="0; url=extensions-core/datasketches-extension.html">
+<h1>Redirecting...</h1>
+<a href="extensions-core/datasketches-extension.html">Click here if you are not redirected.</a>
+<script>location="extensions-core/datasketches-extension.html"</script>
diff --git a/docs/latest/development/experimental-features.html b/docs/26.0.0/development/experimental-features.html
similarity index 91%
copy from docs/latest/development/experimental-features.html
copy to docs/26.0.0/development/experimental-features.html
index 6099b167..35314de1 100644
--- a/docs/latest/development/experimental-features.html
+++ b/docs/26.0.0/development/experimental-features.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Experimental features · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/development/experimental-features.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="doc [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Experimental features · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/development/experimental-features.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="doc [...]
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'UA-131010415-1');
- </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></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
@@ -21,43 +21,43 @@
~ specific language governing permissions and limitations
~ under the License.
-->
-<p>The following features are marked <a href="/docs/latest/development/experimental.html">experimental</a> in the Druid docs.</p>
+<p>The following features are marked <a href="/docs/26.0.0/development/experimental.html">experimental</a> in the Druid docs.</p>
<p>This document includes each page that mentions an experimental feature. To graduate a feature, remove all mentions of its experimental status on all relevant pages.</p>
<p>Note that this document does not track the status of contrib extensions, all of which are considered experimental.</p>
<h2><a class="anchor" aria-hidden="true" id="sql-based-ingestion"></a><a href="#sql-based-ingestion" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.2 [...]
<ul>
-<li><a href="/docs/latest/multi-stage-query/index.html">SQL-based ingestion</a></li>
-<li><a href="/docs/latest/multi-stage-query/concepts.html">SQL-based ingestion concepts</a></li>
-<li><a href="/docs/latest/multi-stage-query/api.html">SQL-based ingestion and multi-stage query task API</a></li>
+<li><a href="/docs/26.0.0/multi-stage-query/index.html">SQL-based ingestion</a></li>
+<li><a href="/docs/26.0.0/multi-stage-query/concepts.html">SQL-based ingestion concepts</a></li>
+<li><a href="/docs/26.0.0/multi-stage-query/api.html">SQL-based ingestion and multi-stage query task API</a></li>
</ul>
<h2><a class="anchor" aria-hidden="true" id="indexer-process"></a><a href="#indexer-process" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 [...]
<ul>
-<li><a href="/docs/latest/design/indexer.html">Indexer process</a></li>
-<li><a href="/docs/latest/design/processes.html#indexer-process-optional">Processes and servers</a></li>
+<li><a href="/docs/26.0.0/design/indexer.html">Indexer process</a></li>
+<li><a href="/docs/26.0.0/design/processes.html#indexer-process-optional">Processes and servers</a></li>
</ul>
<h2><a class="anchor" aria-hidden="true" id="kubernetes"></a><a href="#kubernetes" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1 [...]
<ul>
-<li><a href="/docs/latest/development/extensions-core/kubernetes.html">Kubernetes</a></li>
+<li><a href="/docs/26.0.0/development/extensions-core/kubernetes.html">Kubernetes</a></li>
</ul>
<h2><a class="anchor" aria-hidden="true" id="segment-locking"></a><a href="#segment-locking" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 [...]
<ul>
-<li><a href="/docs/latest/configuration/index.html#overlord-operations">Configuration reference</a></li>
-<li><a href="/docs/latest/ingestion/tasks.html#locking">Task reference</a></li>
-<li><a href="/docs/latest/design/architecture.html#availability-and-consistency">Design</a></li>
+<li><a href="/docs/26.0.0/configuration/index.html#overlord-operations">Configuration reference</a></li>
+<li><a href="/docs/26.0.0/ingestion/tasks.html#locking">Task reference</a></li>
+<li><a href="/docs/26.0.0/design/architecture.html#availability-and-consistency">Design</a></li>
</ul>
<h2><a class="anchor" aria-hidden="true" id="front-coding"></a><a href="#front-coding" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
<ul>
-<li><a href="/docs/latest/ingestion/ingestion-spec.html#front-coding">Ingestion spec reference</a></li>
+<li><a href="/docs/26.0.0/ingestion/ingestion-spec.html#front-coding">Ingestion spec reference</a></li>
</ul>
<h2><a class="anchor" aria-hidden="true" id="other-configuration-properties"></a><a href="#other-configuration-properties" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 1 [...]
<ul>
-<li><a href="/docs/latest/configuration/index.html">Configuration reference</a>
+<li><a href="/docs/26.0.0/configuration/index.html">Configuration reference</a>
<ul>
<li><code>CLOSED_SEGMENTS_SINKS</code> mode</li>
<li>Expression processing configuration <code>druid.expressions.allowNestedArrays</code></li>
</ul></li>
</ul>
-</span></div></article></div><div class="docs-prevnext"></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#sql-based-ingestion">SQL-based ingestion</a></li><li><a href="#indexer-process">Indexer process</a></li><li><a href="#kubernetes">Kubernetes</a></li><li><a href="#segment-locking">Segment locking</a></li><li><a href="#front-coding">Front coding</a></li><li><a href="#other-configuration-properties">Other configuration properties</a></li></ul></nav></div>< [...]
+</span></div></article></div><div class="docs-prevnext"></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#sql-based-ingestion">SQL-based ingestion</a></li><li><a href="#indexer-process">Indexer process</a></li><li><a href="#kubernetes">Kubernetes</a></li><li><a href="#segment-locking">Segment locking</a></li><li><a href="#front-coding">Front coding</a></li><li><a href="#other-configuration-properties">Other configuration properties</a></li></ul></nav></div>< [...]
document.addEventListener('keyup', function(e) {
if (e.target !== document.body) {
return;
@@ -74,6 +74,6 @@
apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
indexName: 'apache_druid',
inputSelector: '#search_input_react',
- algoliaOptions: {"facetFilters":["language:en","version:25.0.0"]}
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
});
</script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/development/experimental.html b/docs/26.0.0/development/experimental.html
new file mode 100644
index 00000000..01ae7c1f
--- /dev/null
+++ b/docs/26.0.0/development/experimental.html
@@ -0,0 +1,110 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Experimental features · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/development/experimental.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:ve [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/development/experimental.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Experimental features</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>Features often start out in "experimental" status that indicates they are still evolving.
+This can mean any of the following things:</p>
+<ol>
+<li>The feature's API may change even in minor releases or patch releases.</li>
+<li>The feature may have known "missing" pieces that will be added later.</li>
+<li>The feature may or may not have received full battle-testing in production environments.</li>
+</ol>
+<p>All experimental features are optional.</p>
+<p>Note that not all of these points apply to every experimental feature. Some have been battle-tested in terms of
+implementation, but are still marked experimental due to an evolving API. Please check the documentation for each
+feature for full details.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/development/versioning.html"><span class="arrow-prev">← </span><span>Versioning</span></a><a class="docs-next button" href="/docs/26.0.0/misc/papers-and-talks.html"><span>Papers</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p><a href="/t [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/latest/development/extensions-contrib/aliyun-oss.html b/docs/26.0.0/development/extensions-contrib/aliyun-oss.html
similarity index 52%
copy from docs/latest/development/extensions-contrib/aliyun-oss.html
copy to docs/26.0.0/development/extensions-contrib/aliyun-oss.html
index 8c1e9d68..f6d227c0 100644
--- a/docs/latest/development/extensions-contrib/aliyun-oss.html
+++ b/docs/26.0.0/development/extensions-contrib/aliyun-oss.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Aliyun OSS · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/development/extensions-contrib/aliyun-oss.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsea [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Aliyun OSS · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/development/extensions-contrib/aliyun-oss.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="docsea [...]
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'UA-131010415-1');
- </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
var coll = document.getElementsByClassName('collapsible');
var checkActiveCategory = true;
for (var i = 0; i < coll.length; i++) {
@@ -80,7 +80,7 @@
<p><a href="https://www.aliyun.com">Alibaba Cloud</a> is the 3rd largest cloud infrastructure provider in the world. It provides its own storage solution known as OSS, <a href="https://www.aliyun.com/product/oss">Object Storage Service</a>.
This document describes how to use OSS as Druid deep storage.</p>
<h2><a class="anchor" aria-hidden="true" id="installation"></a><a href="#installation" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
-<p>Use the <a href="/docs/latest/operations/pull-deps.html">pull-deps</a> tool shipped with Druid to install the <code>aliyun-oss-extensions</code> extension, as described <a href="/docs/latest/development/extensions.html#community-extensions">here</a> on middle manager and historical nodes.</p>
+<p>Use the <a href="/docs/26.0.0/operations/pull-deps.html">pull-deps</a> tool shipped with Druid to install the <code>aliyun-oss-extensions</code> extension, as described <a href="/docs/26.0.0/development/extensions.html#community-extensions">here</a> on middle manager and historical nodes.</p>
<pre><code class="hljs css language-bash">java -classpath <span class="hljs-string">"{YOUR_DRUID_DIR}/lib/*"</span> org.apache.druid.cli.Main tools pull-deps -c org.apache.druid.extensions.contrib:aliyun-oss-extensions:{YOUR_DRUID_VERSION}
</code></pre>
<h2><a class="anchor" aria-hidden="true" id="enabling"></a><a href="#enabling" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 [...]
@@ -152,8 +152,8 @@ To do this, add following configurations:</p>
<tr><th>Property</th><th>Description</th><th>Default</th><th>Required</th></tr>
</thead>
<tbody>
-<tr><td>accessKey</td><td>The <a href="/docs/latest/operations/password-provider.html">Password Provider</a> or plain text string of this OSS InputSource's access key</td><td>None</td><td>yes</td></tr>
-<tr><td>secretKey</td><td>The <a href="/docs/latest/operations/password-provider.html">Password Provider</a> or plain text string of this OSS InputSource's secret key</td><td>None</td><td>yes</td></tr>
+<tr><td>accessKey</td><td>The <a href="/docs/26.0.0/operations/password-provider.html">Password Provider</a> or plain text string of this OSS InputSource's access key</td><td>None</td><td>yes</td></tr>
+<tr><td>secretKey</td><td>The <a href="/docs/26.0.0/operations/password-provider.html">Password Provider</a> or plain text string of this OSS InputSource's secret key</td><td>None</td><td>yes</td></tr>
<tr><td>endpoint</td><td>The endpoint of this OSS InputSource</td><td>None</td><td>no</td></tr>
</tbody>
</table>
@@ -274,7 +274,7 @@ In this case, the <code>uris</code> property of the OSS's input source can be us
<h2><a class="anchor" aria-hidden="true" id="troubleshooting"></a><a href="#troubleshooting" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 [...]
<p>When using OSS as deep storage or reading from OSS, the most problems that users will encounter are related to OSS permission.
Please refer to the official <a href="https://www.alibabacloud.com/help/doc-detail/42777.htm">OSS permission troubleshooting document</a> to find a solution.</p>
-</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/latest/development/extensions-contrib/gce-extensions.html"><span class="arrow-prev">← </span><span>GCE Extensions</span></a><a class="docs-next button" href="/docs/latest/development/extensions-contrib/prometheus.html"><span>Prometheus Emitter</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#installation">Installation</ [...]
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/development/extensions-contrib/gce-extensions.html"><span class="arrow-prev">← </span><span>GCE Extensions</span></a><a class="docs-next button" href="/docs/26.0.0/development/extensions-contrib/prometheus.html"><span>Prometheus Emitter</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#installation">Installation</ [...]
document.addEventListener('keyup', function(e) {
if (e.target !== document.body) {
return;
@@ -291,6 +291,6 @@ Please refer to the official <a href="https://www.alibabacloud.com/help/doc-deta
apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
indexName: 'apache_druid',
inputSelector: '#search_input_react',
- algoliaOptions: {"facetFilters":["language:en","version:25.0.0"]}
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
});
</script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/development/extensions-contrib/ambari-metrics-emitter.html b/docs/26.0.0/development/extensions-contrib/ambari-metrics-emitter.html
new file mode 100644
index 00000000..02605b4a
--- /dev/null
+++ b/docs/26.0.0/development/extensions-contrib/ambari-metrics-emitter.html
@@ -0,0 +1,159 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Ambari Metrics Emitter · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/development/extensions-contrib/ambari-metrics-emitter.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content= [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/development/extensions-contrib/ambari-metrics-emitter.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Ambari Metrics Emitter</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>To use this Apache Druid extension, <a href="/docs/26.0.0/development/extensions.html#loading-extensions">include</a> <code>ambari-metrics-emitter</code> in the extensions load list.</p>
+<h2><a class="anchor" aria-hidden="true" id="introduction"></a><a href="#introduction" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
+<p>This extension emits Druid metrics to an ambari-metrics carbon server. Events are sent after been pickled (i.e., batched). The size of the batch is configurable.</p>
+<h2><a class="anchor" aria-hidden="true" id="configuration"></a><a href="#configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
+<p>All the configuration parameters for ambari-metrics emitter are under <code>druid.emitter.ambari-metrics</code>.</p>
+<table>
+<thead>
+<tr><th>property</th><th>description</th><th>required?</th><th>default</th></tr>
+</thead>
+<tbody>
+<tr><td><code>druid.emitter.ambari-metrics.hostname</code></td><td>The hostname of the ambari-metrics server.</td><td>yes</td><td>none</td></tr>
+<tr><td><code>druid.emitter.ambari-metrics.port</code></td><td>The port of the ambari-metrics server.</td><td>yes</td><td>none</td></tr>
+<tr><td><code>druid.emitter.ambari-metrics.protocol</code></td><td>The protocol used to send metrics to ambari metrics collector. One of http/https</td><td>no</td><td>http</td></tr>
+<tr><td><code>druid.emitter.ambari-metrics.trustStorePath</code></td><td>Path to trustStore to be used for https</td><td>no</td><td>none</td></tr>
+<tr><td><code>druid.emitter.ambari-metrics.trustStoreType</code></td><td>trustStore type to be used for https</td><td>no</td><td>none</td></tr>
+<tr><td><code>druid.emitter.ambari-metrics.trustStoreType</code></td><td>trustStore password to be used for https</td><td>no</td><td>none</td></tr>
+<tr><td><code>druid.emitter.ambari-metrics.batchSize</code></td><td>Number of events to send as one batch.</td><td>no</td><td>100</td></tr>
+<tr><td><code>druid.emitter.ambari-metrics.eventConverter</code></td><td>Filter and converter of druid events to ambari-metrics timeline event(please see next section).</td><td>yes</td><td>none</td></tr>
+<tr><td><code>druid.emitter.ambari-metrics.flushPeriod</code></td><td>Queue flushing period in milliseconds.</td><td>no</td><td>1 minute</td></tr>
+<tr><td><code>druid.emitter.ambari-metrics.maxQueueSize</code></td><td>Maximum size of the queue used to buffer events.</td><td>no</td><td><code>MAX_INT</code></td></tr>
+<tr><td><code>druid.emitter.ambari-metrics.alertEmitters</code></td><td>List of emitters where alerts will be forwarded to.</td><td>no</td><td>empty list (no forwarding)</td></tr>
+<tr><td><code>druid.emitter.ambari-metrics.emitWaitTime</code></td><td>wait time in milliseconds to try to send the event otherwise emitter will throwing event.</td><td>no</td><td>0</td></tr>
+<tr><td><code>druid.emitter.ambari-metrics.waitForEventTime</code></td><td>waiting time in milliseconds if necessary for an event to become available.</td><td>no</td><td>1000 (1 sec)</td></tr>
+</tbody>
+</table>
+<h3><a class="anchor" aria-hidden="true" id="druid-to-ambari-metrics-timeline-event-converter"></a><a href="#druid-to-ambari-metrics-timeline-event-converter" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9z [...]
+<p>Ambari Metrics Timeline Event Converter defines a mapping between druid metrics name plus dimensions to a timeline event metricName.
+ambari-metrics metric path is organized using the following schema:
+<code><namespacePrefix>.[<druid service name>].[<druid hostname>].<druid metrics dimensions>.<druid metrics name></code>
+Properly naming the metrics is critical to avoid conflicts, confusing data and potentially wrong interpretation later on.</p>
+<p>Example <code>druid.historical.hist-host1:8080.MyDataSourceName.GroupBy.query/time</code>:</p>
+<ul>
+<li><code>druid</code> -> namespace prefix</li>
+<li><code>historical</code> -> service name</li>
+<li><code>hist-host1:8080</code> -> druid hostname</li>
+<li><code>MyDataSourceName</code> -> dimension value</li>
+<li><code>GroupBy</code> -> dimension value</li>
+<li><code>query/time</code> -> metric name</li>
+</ul>
+<p>We have two different implementation of event converter:</p>
+<h4><a class="anchor" aria-hidden="true" id="send-all-converter"></a><a href="#send-all-converter" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22- [...]
+<p>The first implementation called <code>all</code>, will send all the druid service metrics events.
+The path will be in the form <code><namespacePrefix>.[<druid service name>].[<druid hostname>].<dimensions values ordered by dimension's name>.<metric></code>
+User has control of <code><namespacePrefix>.[<druid service name>].[<druid hostname>].</code></p>
+<pre><code class="hljs css language-json">
+druid.emitter.ambari-metrics.eventConverter={"type":"all", "namespacePrefix": "druid.test", "appName":"druid"}
+
+</code></pre>
+<h4><a class="anchor" aria-hidden="true" id="white-list-based-converter"></a><a href="#white-list-based-converter" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H [...]
+<p>The second implementation called <code>whiteList</code>, will send only the white listed metrics and dimensions.
+Same as for the <code>all</code> converter user has control of <code><namespacePrefix>.[<druid service name>].[<druid hostname>].</code>
+White-list based converter comes with the following default white list map located under resources in <code>./src/main/resources/defaultWhiteListMap.json</code></p>
+<p>Although user can override the default white list map by supplying a property called <code>mapPath</code>.
+This property is a String containing the path for the file containing <strong>white list map JSON object</strong>.
+For example the following converter will read the map from the file <code>/pathPrefix/fileName.json</code>.</p>
+<pre><code class="hljs css language-json">
+druid.emitter.ambari-metrics.eventConverter={"type":"whiteList", "namespacePrefix": "druid.test", "ignoreHostname":true, "appName":"druid", "mapPath":"/pathPrefix/fileName.json"}
+
+</code></pre>
+<p><strong>Druid emits a huge number of metrics we highly recommend to use the <code>whiteList</code> converter</strong></p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/development/extensions-core/kubernetes.html"><span class="arrow-prev">← </span><span>Kubernetes</span></a><a class="docs-next button" href="/docs/26.0.0/development/extensions-contrib/cassandra.html"><span>Apache Cassandra</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#introduction">Introduction</a></li><li><a [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/development/extensions-contrib/cassandra.html b/docs/26.0.0/development/extensions-contrib/cassandra.html
new file mode 100644
index 00000000..d5839064
--- /dev/null
+++ b/docs/26.0.0/development/extensions-contrib/cassandra.html
@@ -0,0 +1,103 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Apache Cassandra · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/development/extensions-contrib/cassandra.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="d [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/development/extensions-contrib/cassandra.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Apache Cassandra</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>To use this Apache Druid extension, <a href="/docs/26.0.0/development/extensions.html#loading-extensions">include</a> <code>druid-cassandra-storage</code> in the extensions load list.</p>
+<p><a href="http://www.datastax.com/what-we-offer/products-services/datastax-enterprise/apache-cassandra">Apache Cassandra</a> can also
+be leveraged for deep storage. This requires some additional Druid configuration as well as setting up the necessary
+schema within a Cassandra keystore.</p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/development/extensions-contrib/ambari-metrics-emitter.html"><span class="arrow-prev">← </span><span>Ambari Metrics Emitter</span></a><a class="docs-next button" href="/docs/26.0.0/development/extensions-contrib/cloudfiles.html"><span>Rackspace Cloud Files</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer druid-foot [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/development/extensions-contrib/cloudfiles.html b/docs/26.0.0/development/extensions-contrib/cloudfiles.html
new file mode 100644
index 00000000..001da206
--- /dev/null
+++ b/docs/26.0.0/development/extensions-contrib/cloudfiles.html
@@ -0,0 +1,170 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Rackspace Cloud Files · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/development/extensions-contrib/cloudfiles.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta n [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/development/extensions-contrib/cloudfiles.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Rackspace Cloud Files</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>To use this Apache Druid extension, <a href="/docs/26.0.0/development/extensions.html#loading-extensions">include</a> <code>druid-cloudfiles-extensions</code> in the extensions load list.</p>
+<h2><a class="anchor" aria-hidden="true" id="deep-storage"></a><a href="#deep-storage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
+<p><a href="http://www.rackspace.com/cloud/files/">Rackspace Cloud Files</a> is another option for deep storage. This requires some additional Druid configuration.</p>
+<table>
+<thead>
+<tr><th>Property</th><th>Possible Values</th><th>Description</th><th>Default</th></tr>
+</thead>
+<tbody>
+<tr><td><code>druid.storage.type</code></td><td>cloudfiles</td><td></td><td>Must be set.</td></tr>
+<tr><td><code>druid.storage.region</code></td><td></td><td>Rackspace Cloud Files region.</td><td>Must be set.</td></tr>
+<tr><td><code>druid.storage.container</code></td><td></td><td>Rackspace Cloud Files container name.</td><td>Must be set.</td></tr>
+<tr><td><code>druid.storage.basePath</code></td><td></td><td>Rackspace Cloud Files base path to use in the container.</td><td>Must be set.</td></tr>
+<tr><td><code>druid.storage.operationMaxRetries</code></td><td></td><td>Number of tries before cancel a Rackspace operation.</td><td>10</td></tr>
+<tr><td><code>druid.cloudfiles.userName</code></td><td></td><td>Rackspace Cloud username</td><td>Must be set.</td></tr>
+<tr><td><code>druid.cloudfiles.apiKey</code></td><td></td><td>Rackspace Cloud API key.</td><td>Must be set.</td></tr>
+<tr><td><code>druid.cloudfiles.provider</code></td><td>rackspace-cloudfiles-us,rackspace-cloudfiles-uk</td><td>Name of the provider depending on the region.</td><td>Must be set.</td></tr>
+<tr><td><code>druid.cloudfiles.useServiceNet</code></td><td>true,false</td><td>Whether to use the internal service net.</td><td>true</td></tr>
+</tbody>
+</table>
+<h2><a class="anchor" aria-hidden="true" id="firehose"></a><a href="#firehose" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 [...]
+<p><a name="firehose"></a></p>
+<h4><a class="anchor" aria-hidden="true" id="staticcloudfilesfirehose"></a><a href="#staticcloudfilesfirehose" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-. [...]
+<p>This firehose ingests events, similar to the StaticAzureBlobStoreFirehose, but from Rackspace's Cloud Files.</p>
+<p>Data is newline delimited, with one JSON object per line and parsed as per the <code>InputRowParser</code> configuration.</p>
+<p>The storage account is shared with the one used for Rackspace's Cloud Files deep storage functionality, but blobs can be in a different region and container.</p>
+<p>As with the Azure blobstore, it is assumed to be gzipped if the extension ends in .gz</p>
+<p>This firehose is <em>splittable</em> and can be used by <a href="/docs/26.0.0/ingestion/native-batch.html">native parallel index tasks</a>.
+Since each split represents an object in this firehose, each worker task of <code>index_parallel</code> will read an object.</p>
+<p>Sample spec:</p>
+<pre><code class="hljs css language-json">"firehose" : {
+ "type" : "static-cloudfiles",
+ "blobs": [
+ {
+ "region": "DFW"
+ "container": "container",
+ "path": "/path/to/your/file.json"
+ },
+ {
+ "region": "ORD"
+ "container": "anothercontainer",
+ "path": "/another/path.json"
+ }
+ ]
+}
+</code></pre>
+<p>This firehose provides caching and prefetching features. In IndexTask, a firehose can be read twice if intervals or
+shardSpecs are not specified, and, in this case, caching can be useful. Prefetching is preferred when direct scan of objects is slow.</p>
+<table>
+<thead>
+<tr><th>property</th><th>description</th><th>default</th><th>required?</th></tr>
+</thead>
+<tbody>
+<tr><td>type</td><td>This should be <code>static-cloudfiles</code>.</td><td>N/A</td><td>yes</td></tr>
+<tr><td>blobs</td><td>JSON array of Cloud Files blobs.</td><td>N/A</td><td>yes</td></tr>
+<tr><td>maxCacheCapacityBytes</td><td>Maximum size of the cache space in bytes. 0 means disabling cache.</td><td>1073741824</td><td>no</td></tr>
+<tr><td>maxCacheCapacityBytes</td><td>Maximum size of the cache space in bytes. 0 means disabling cache. Cached files are not removed until the ingestion task completes.</td><td>1073741824</td><td>no</td></tr>
+<tr><td>maxFetchCapacityBytes</td><td>Maximum size of the fetch space in bytes. 0 means disabling prefetch. Prefetched files are removed immediately once they are read.</td><td>1073741824</td><td>no</td></tr>
+<tr><td>fetchTimeout</td><td>Timeout for fetching a Cloud Files object.</td><td>60000</td><td>no</td></tr>
+<tr><td>maxFetchRetry</td><td>Maximum retry for fetching a Cloud Files object.</td><td>3</td><td>no</td></tr>
+</tbody>
+</table>
+<p>Cloud Files Blobs:</p>
+<table>
+<thead>
+<tr><th>property</th><th>description</th><th>default</th><th>required?</th></tr>
+</thead>
+<tbody>
+<tr><td>container</td><td>Name of the Cloud Files container</td><td>N/A</td><td>yes</td></tr>
+<tr><td>path</td><td>The path where data is located.</td><td>N/A</td><td>yes</td></tr>
+</tbody>
+</table>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/development/extensions-contrib/cassandra.html"><span class="arrow-prev">← </span><span>Apache Cassandra</span></a><a class="docs-next button" href="/docs/26.0.0/development/extensions-contrib/distinctcount.html"><span class="function-name-prevnext">DistinctCount Aggregator</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li>< [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/latest/development/extensions-contrib/compressed-big-decimal.html b/docs/26.0.0/development/extensions-contrib/compressed-big-decimal.html
similarity index 96%
copy from docs/latest/development/extensions-contrib/compressed-big-decimal.html
copy to docs/26.0.0/development/extensions-contrib/compressed-big-decimal.html
index 5d7efbb6..6adcfdb9 100644
--- a/docs/latest/development/extensions-contrib/compressed-big-decimal.html
+++ b/docs/26.0.0/development/extensions-contrib/compressed-big-decimal.html
@@ -1,9 +1,9 @@
-<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Compressed Big Decimal · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/development/extensions-contrib/compressed-big-decimal.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content= [...]
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Compressed Big Decimal · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/development/extensions-contrib/compressed-big-decimal.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content= [...]
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', 'UA-131010415-1');
- </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></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
@@ -31,7 +31,7 @@
<li>Accuracy: Provides greater level of accuracy in decimal arithmetic</li>
</ol>
<h2><a class="anchor" aria-hidden="true" id="operations"></a><a href="#operations" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1 [...]
-<p>To use this extension, make sure to <a href="/docs/latest/development/extensions.html#loading-extensions">load</a> <code>compressed-big-decimal</code> to your config file.</p>
+<p>To use this extension, make sure to <a href="/docs/26.0.0/development/extensions.html#loading-extensions">load</a> <code>compressed-big-decimal</code> to your config file.</p>
<h2><a class="anchor" aria-hidden="true" id="configuration"></a><a href="#configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
<p>There are currently no configuration properties specific to Compressed Big Decimal</p>
<h2><a class="anchor" aria-hidden="true" id="limitations"></a><a href="#limitations" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42 [...]
@@ -40,7 +40,7 @@
</ul>
<h3><a class="anchor" aria-hidden="true" id="ingestion-spec"></a><a href="#ingestion-spec" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0- [...]
<ul>
-<li>Most properties in the Ingest spec derived from <a href="/docs/latest/ingestion/index.html">Ingestion Spec</a> / <a href="/docs/latest/ingestion/data-formats.html">Data Formats</a></li>
+<li>Most properties in the Ingest spec derived from <a href="/docs/26.0.0/ingestion/index.html">Ingestion Spec</a> / <a href="/docs/26.0.0/ingestion/data-formats.html">Data Formats</a></li>
</ul>
<table>
<thead>
@@ -52,7 +52,7 @@
</table>
<h3><a class="anchor" aria-hidden="true" id="query-spec"></a><a href="#query-spec" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1 [...]
<ul>
-<li>Most properties in the query spec derived from <a href="/docs/latest/querying/groupbyquery.html">groupBy query</a> / <a href="/docs/latest/querying/timeseriesquery.html">timeseries</a>, see documentation for these query types.</li>
+<li>Most properties in the query spec derived from <a href="/docs/26.0.0/querying/groupbyquery.html">groupBy query</a> / <a href="/docs/26.0.0/querying/timeseriesquery.html">timeseries</a>, see documentation for these query types.</li>
</ul>
<table>
<thead>
@@ -60,14 +60,14 @@
</thead>
<tbody>
<tr><td>queryType</td><td>This String should always be either "groupBy" OR "timeseries"; this is the first thing Druid looks at to figure out how to interpret the query.</td><td>yes</td></tr>
-<tr><td>dataSource</td><td>A String or Object defining the data source to query, very similar to a table in a relational database. See <a href="/docs/latest/querying/datasource.html">DataSource</a> for more information.</td><td>yes</td></tr>
-<tr><td>dimensions</td><td>A JSON list of <a href="/docs/latest/querying/dimensionspecs.html">DimensionSpec</a> (Notice that property is optional)</td><td>no</td></tr>
-<tr><td>limitSpec</td><td>See <a href="/docs/latest/querying/limitspec.html">LimitSpec</a></td><td>no</td></tr>
-<tr><td>having</td><td>See <a href="/docs/latest/querying/having.html">Having</a></td><td>no</td></tr>
+<tr><td>dataSource</td><td>A String or Object defining the data source to query, very similar to a table in a relational database. See <a href="/docs/26.0.0/querying/datasource.html">DataSource</a> for more information.</td><td>yes</td></tr>
+<tr><td>dimensions</td><td>A JSON list of <a href="/docs/26.0.0/querying/dimensionspecs.html">DimensionSpec</a> (Notice that property is optional)</td><td>no</td></tr>
+<tr><td>limitSpec</td><td>See <a href="/docs/26.0.0/querying/limitspec.html">LimitSpec</a></td><td>no</td></tr>
+<tr><td>having</td><td>See <a href="/docs/26.0.0/querying/having.html">Having</a></td><td>no</td></tr>
<tr><td>granularity</td><td>A period granularity; See <a href="../../querying/granularities.html#period-granularities">Period Granularities</a></td><td>yes</td></tr>
-<tr><td>filter</td><td>See <a href="/docs/latest/querying/filters.html">Filters</a></td><td>no</td></tr>
-<tr><td>aggregations</td><td>Aggregations forms the input to Averagers; See <a href="/docs/latest/querying/aggregations.html">Aggregations</a>. The Aggregations must specify type, scale and size as follows for compressedBigDecimal Type <code>"aggregations": [{"type": "compressedBigDecimal","name": "..","fieldName": "..","scale": [Numeric],"size": [Numeric]}</code>. Please refer query example in Exa [...]
-<tr><td>postAggregations</td><td>Supports only aggregations as input; See <a href="/docs/latest/querying/post-aggregations.html">Post Aggregations</a></td><td>no</td></tr>
+<tr><td>filter</td><td>See <a href="/docs/26.0.0/querying/filters.html">Filters</a></td><td>no</td></tr>
+<tr><td>aggregations</td><td>Aggregations forms the input to Averagers; See <a href="/docs/26.0.0/querying/aggregations.html">Aggregations</a>. The Aggregations must specify type, scale and size as follows for compressedBigDecimal Type <code>"aggregations": [{"type": "compressedBigDecimal","name": "..","fieldName": "..","scale": [Numeric],"size": [Numeric]}</code>. Please refer query example in Exa [...]
+<tr><td>postAggregations</td><td>Supports only aggregations as input; See <a href="/docs/26.0.0/querying/post-aggregations.html">Post Aggregations</a></td><td>no</td></tr>
<tr><td>intervals</td><td>A JSON Object representing ISO-8601 Intervals. This defines the time ranges to run the query over.</td><td>yes</td></tr>
<tr><td>context</td><td>An additional JSON Object which can be used to specify certain flags.</td><td>no</td></tr>
</tbody>
@@ -224,7 +224,7 @@
}
} ]
</code></pre>
-</span></div></article></div><div class="docs-prevnext"></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#overview">Overview</a></li><li><a href="#operations">Operations</a></li><li><a href="#configuration">Configuration</a></li><li><a href="#limitations">Limitations</a><ul class="toc-headings"><li><a href="#ingestion-spec">Ingestion Spec:</a></li><li><a href="#query-spec">Query spec:</a></li></ul></li><li><a href="#examples">Examples</a><ul class="toc-headi [...]
+</span></div></article></div><div class="docs-prevnext"></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#overview">Overview</a></li><li><a href="#operations">Operations</a></li><li><a href="#configuration">Configuration</a></li><li><a href="#limitations">Limitations</a><ul class="toc-headings"><li><a href="#ingestion-spec">Ingestion Spec:</a></li><li><a href="#query-spec">Query spec:</a></li></ul></li><li><a href="#examples">Examples</a><ul class="toc-headi [...]
document.addEventListener('keyup', function(e) {
if (e.target !== document.body) {
return;
@@ -241,6 +241,6 @@
apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
indexName: 'apache_druid',
inputSelector: '#search_input_react',
- algoliaOptions: {"facetFilters":["language:en","version:25.0.0"]}
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
});
</script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/development/extensions-contrib/distinctcount.html b/docs/26.0.0/development/extensions-contrib/distinctcount.html
new file mode 100644
index 00000000..d7f1f109
--- /dev/null
+++ b/docs/26.0.0/development/extensions-contrib/distinctcount.html
@@ -0,0 +1,162 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>DistinctCount Aggregator · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/development/extensions-contrib/distinctcount.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/>< [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/development/extensions-contrib/distinctcount.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">DistinctCount Aggregator</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>To use this Apache Druid extension, <a href="/docs/26.0.0/development/extensions.html#loading-extensions">include</a> the <code>druid-distinctcount</code> in the extensions load list.</p>
+<p>Additionally, follow these steps:</p>
+<ol>
+<li>First, use a single dimension hash-based partition spec to partition data by a single dimension. For example visitor_id. This to make sure all rows with a particular value for that dimension will go into the same segment, or this might over count.</li>
+<li>Second, use distinctCount to calculate the distinct count, make sure queryGranularity is divided exactly by segmentGranularity or else the result will be wrong.</li>
+</ol>
+<p>There are some limitations, when used with groupBy, the groupBy keys' numbers should not exceed maxIntermediateRows in every segment. If exceeded the result will be wrong. When used with topN, numValuesPerPass should not be too big. If too big the distinctCount will use a lot of memory and might cause the JVM to go our of memory.</p>
+<p>Example:</p>
+<h2><a class="anchor" aria-hidden="true" id="timeseries-query"></a><a href="#timeseries-query" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2. [...]
+<pre><code class="hljs css language-json">{
+ <span class="hljs-attr">"queryType"</span>: <span class="hljs-string">"timeseries"</span>,
+ <span class="hljs-attr">"dataSource"</span>: <span class="hljs-string">"sample_datasource"</span>,
+ <span class="hljs-attr">"granularity"</span>: <span class="hljs-string">"day"</span>,
+ <span class="hljs-attr">"aggregations"</span>: [
+ {
+ <span class="hljs-attr">"type"</span>: <span class="hljs-string">"distinctCount"</span>,
+ <span class="hljs-attr">"name"</span>: <span class="hljs-string">"uv"</span>,
+ <span class="hljs-attr">"fieldName"</span>: <span class="hljs-string">"visitor_id"</span>
+ }
+ ],
+ <span class="hljs-attr">"intervals"</span>: [
+ <span class="hljs-string">"2016-03-01T00:00:00.000/2013-03-20T00:00:00.000"</span>
+ ]
+}
+</code></pre>
+<h2><a class="anchor" aria-hidden="true" id="topn-query"></a><a href="#topn-query" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1 [...]
+<pre><code class="hljs css language-json">{
+ <span class="hljs-attr">"queryType"</span>: <span class="hljs-string">"topN"</span>,
+ <span class="hljs-attr">"dataSource"</span>: <span class="hljs-string">"sample_datasource"</span>,
+ <span class="hljs-attr">"dimension"</span>: <span class="hljs-string">"sample_dim"</span>,
+ <span class="hljs-attr">"threshold"</span>: <span class="hljs-number">5</span>,
+ <span class="hljs-attr">"metric"</span>: <span class="hljs-string">"uv"</span>,
+ <span class="hljs-attr">"granularity"</span>: <span class="hljs-string">"all"</span>,
+ <span class="hljs-attr">"aggregations"</span>: [
+ {
+ <span class="hljs-attr">"type"</span>: <span class="hljs-string">"distinctCount"</span>,
+ <span class="hljs-attr">"name"</span>: <span class="hljs-string">"uv"</span>,
+ <span class="hljs-attr">"fieldName"</span>: <span class="hljs-string">"visitor_id"</span>
+ }
+ ],
+ <span class="hljs-attr">"intervals"</span>: [
+ <span class="hljs-string">"2016-03-06T00:00:00/2016-03-06T23:59:59"</span>
+ ]
+}
+</code></pre>
+<h2><a class="anchor" aria-hidden="true" id="groupby-query"></a><a href="#groupby-query" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
+<pre><code class="hljs css language-json">{
+ <span class="hljs-attr">"queryType"</span>: <span class="hljs-string">"groupBy"</span>,
+ <span class="hljs-attr">"dataSource"</span>: <span class="hljs-string">"sample_datasource"</span>,
+ <span class="hljs-attr">"dimensions"</span>: [<span class="hljs-string">"sample_dim"</span>],
+ <span class="hljs-attr">"granularity"</span>: <span class="hljs-string">"all"</span>,
+ <span class="hljs-attr">"aggregations"</span>: [
+ {
+ <span class="hljs-attr">"type"</span>: <span class="hljs-string">"distinctCount"</span>,
+ <span class="hljs-attr">"name"</span>: <span class="hljs-string">"uv"</span>,
+ <span class="hljs-attr">"fieldName"</span>: <span class="hljs-string">"visitor_id"</span>
+ }
+ ],
+ <span class="hljs-attr">"intervals"</span>: [
+ <span class="hljs-string">"2016-03-06T00:00:00/2016-03-06T23:59:59"</span>
+ ]
+}
+</code></pre>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/development/extensions-contrib/cloudfiles.html"><span class="arrow-prev">← </span><span>Rackspace Cloud Files</span></a><a class="docs-next button" href="/docs/26.0.0/development/extensions-contrib/graphite.html"><span>Graphite Emitter</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#timeseries-query">Timeseries [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/development/extensions-contrib/gce-extensions.html b/docs/26.0.0/development/extensions-contrib/gce-extensions.html
new file mode 100644
index 00000000..cd20a0da
--- /dev/null
+++ b/docs/26.0.0/development/extensions-contrib/gce-extensions.html
@@ -0,0 +1,168 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>GCE Extensions · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/development/extensions-contrib/gce-extensions.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name [...]
+ window.dataLayer = window.dataLayer || [];
+ function gtag(){dataLayer.push(arguments); }
+ gtag('js', new Date());
+ gtag('config', 'UA-131010415-1');
+ </script><link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css"/><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head>< [...]
+ var coll = document.getElementsByClassName('collapsible');
+ var checkActiveCategory = true;
+ for (var i = 0; i < coll.length; i++) {
+ var links = coll[i].nextElementSibling.getElementsByTagName('*');
+ if (checkActiveCategory){
+ for (var j = 0; j < links.length; j++) {
+ if (links[j].classList.contains('navListItemActive')){
+ coll[i].nextElementSibling.classList.toggle('hide');
+ coll[i].childNodes[1].classList.toggle('rotate');
+ checkActiveCategory = false;
+ break;
+ }
+ }
+ }
+
+ coll[i].addEventListener('click', function() {
+ var arrow = this.childNodes[1];
+ arrow.classList.toggle('rotate');
+ var content = this.nextElementSibling;
+ content.classList.toggle('hide');
+ });
+ }
+
+ document.addEventListener('DOMContentLoaded', function() {
+ createToggler('#navToggler', '#docsNav', 'docsSliderActive');
+ createToggler('#tocToggler', 'body', 'tocActive');
+
+ var headings = document.querySelector('.toc-headings');
+ headings && headings.addEventListener('click', function(event) {
+ var el = event.target;
+ while(el !== headings){
+ if (el.tagName === 'A') {
+ document.body.classList.remove('tocActive');
+ break;
+ } else{
+ el = el.parentNode;
+ }
+ }
+ }, false);
+
+ function createToggler(togglerSelector, targetSelector, className) {
+ var toggler = document.querySelector(togglerSelector);
+ var target = document.querySelector(targetSelector);
+
+ if (!toggler) {
+ return;
+ }
+
+ toggler.onclick = function(event) {
+ event.preventDefault();
+
+ target.classList.toggle(className);
+ };
+ }
+ });
+ </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/druid/edit/master/docs/development/extensions-contrib/gce-extensions.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">GCE Extensions</h1></header><article><div><span><!--
+ ~ 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.
+ -->
+<p>To use this Apache Druid extension, <a href="/docs/26.0.0/development/extensions.html#loading-extensions">include</a> <code>gce-extensions</code> in the extensions load list.</p>
+<p>At the moment, this extension enables only Druid to autoscale instances in GCE.</p>
+<p>The extension manages the instances to be scaled up and down through the use of the <a href="https://cloud.google.com/compute/docs/instance-groups/creating-groups-of-managed-instances#resize_managed_group">Managed Instance Groups</a>
+of GCE (MIG from now on). This choice has been made to ease the configuration of the machines and simplify their
+management.</p>
+<p>For this reason, in order to use this extension, the user must have created</p>
+<ol>
+<li>An instance template with the right machine type and image to bu used to run the MiddleManager</li>
+<li>A MIG that has been configured to use the instance template created in the point above</li>
+</ol>
+<p>Moreover, in order to be able to rescale the machines in the MIG, the Overlord must run with a service account
+guaranteeing the following two scopes from the <a href="https://developers.google.com/identity/protocols/googlescopes#computev1">Compute Engine API</a></p>
+<ul>
+<li><code>https://www.googleapis.com/auth/cloud-platform</code></li>
+<li><code>https://www.googleapis.com/auth/compute</code></li>
+</ul>
+<h2><a class="anchor" aria-hidden="true" id="overlord-dynamic-configuration"></a><a href="#overlord-dynamic-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 1 [...]
+<p>The Overlord can dynamically change worker behavior.</p>
+<p>The JSON object can be submitted to the Overlord via a POST request at:</p>
+<pre><code class="hljs">http:<span class="hljs-regexp">//</span><OVERLORD_IP>:<port><span class="hljs-regexp">/druid/i</span>ndexer<span class="hljs-regexp">/v1/</span>worker
+</code></pre>
+<p>Optional Header Parameters for auditing the config change can also be specified.</p>
+<table>
+<thead>
+<tr><th>Header Param Name</th><th>Description</th><th>Default</th></tr>
+</thead>
+<tbody>
+<tr><td><code>X-Druid-Author</code></td><td>author making the config change</td><td>""</td></tr>
+<tr><td><code>X-Druid-Comment</code></td><td>comment describing the change being done</td><td>""</td></tr>
+</tbody>
+</table>
+<p>A sample worker config spec is shown below:</p>
+<pre><code class="hljs css language-json">{
+ <span class="hljs-attr">"autoScaler"</span>: {
+ <span class="hljs-attr">"envConfig"</span> : {
+ <span class="hljs-attr">"numInstances"</span> : <span class="hljs-number">1</span>,
+ <span class="hljs-attr">"projectId"</span> : <span class="hljs-string">"super-project"</span>,
+ <span class="hljs-attr">"zoneName"</span> : <span class="hljs-string">"us-central-1"</span>,
+ <span class="hljs-attr">"managedInstanceGroupName"</span> : <span class="hljs-string">"druid-middlemanagers"</span>
+ },
+ <span class="hljs-attr">"maxNumWorkers"</span> : <span class="hljs-number">4</span>,
+ <span class="hljs-attr">"minNumWorkers"</span> : <span class="hljs-number">2</span>,
+ <span class="hljs-attr">"type"</span> : <span class="hljs-string">"gce"</span>
+ }
+}
+</code></pre>
+<p>The configuration of the autoscaler is quite simple and it is made of two levels only.</p>
+<p>The external level specifies the <code>type</code>—always <code>gce</code> in this case— and two numeric values,
+the <code>maxNumWorkers</code> and <code>minNumWorkers</code> used to define the boundaries in between which the
+number of instances must be at any time.</p>
+<p>The internal level is the <code>envConfig</code> and it is used to specify</p>
+<ul>
+<li>The <code>numInstances</code> used to specify how many workers will be spawned at each
+request to provision more workers. This is safe to be left to <code>1</code></li>
+<li>The <code>projectId</code> used to specify the name of the project in which the MIG resides</li>
+<li>The <code>zoneName</code> used to identify in which zone of the worlds the MIG is</li>
+<li>The <code>managedInstanceGroupName</code> used to specify the MIG containing the instances created or
+removed</li>
+</ul>
+<p>Please refer to the Overlord Dynamic Configuration section in the main <a href="/docs/26.0.0/configuration/index.html">documentation</a>
+for parameters other than the ones specified here, such as <code>selectStrategy</code> etc.</p>
+<h2><a class="anchor" aria-hidden="true" id="known-limitations"></a><a href="#known-limitations" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2- [...]
+<ul>
+<li>The module internally uses the <a href="https://cloud.google.com/compute/docs/reference/rest/v1/instanceGroupManagers/listManagedInstances">ListManagedInstances</a>
+call from the API and, while the documentation of the API states that the call can be paged through using the
+<code>pageToken</code> argument, the responses to such call do not provide any <code>nextPageToken</code> to set such parameter. This means
+that the extension can operate safely with a maximum of 500 MiddleManagers instances at any time (the maximum number
+of instances to be returned for each call).</li>
+</ul>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/development/extensions-contrib/time-min-max.html"><span class="arrow-prev">← </span><span>Timestamp Min/Max aggregators</span></a><a class="docs-next button" href="/docs/26.0.0/development/extensions-contrib/aliyun-oss.html"><span>Aliyun OSS</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#overlord-dynamic-config [...]
+ document.addEventListener('keyup', function(e) {
+ if (e.target !== document.body) {
+ return;
+ }
+ // keyCode for '/' (slash)
+ if (e.keyCode === 191) {
+ const search = document.getElementById('search_input_react');
+ search && search.focus();
+ }
+ });
+ </script><script>
+ var search = docsearch({
+ appId: 'CPK9PMSCEY',
+ apiKey: 'd4ef4ffe3a2f0c7d1e34b062fd98736b',
+ indexName: 'apache_druid',
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["language:en","version:26.0.0"]}
+ });
+ </script></body></html>
\ No newline at end of file
diff --git a/docs/26.0.0/development/extensions-contrib/google.html b/docs/26.0.0/development/extensions-contrib/google.html
new file mode 100644
index 00000000..cca1c233
--- /dev/null
+++ b/docs/26.0.0/development/extensions-contrib/google.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Redirecting...</title>
+<link rel="canonical" href="../extensions-core/google.html">
+<meta http-equiv="refresh" content="0; url=../extensions-core/google.html">
+<h1>Redirecting...</h1>
+<a href="../extensions-core/google.html">Click here if you are not redirected.</a>
+<script>location="../extensions-core/google.html"</script>
diff --git a/docs/26.0.0/development/extensions-contrib/graphite.html b/docs/26.0.0/development/extensions-contrib/graphite.html
new file mode 100644
index 00000000..66cdd28b
--- /dev/null
+++ b/docs/26.0.0/development/extensions-contrib/graphite.html
@@ -0,0 +1,170 @@
+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Graphite Emitter · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/development/extensions-contrib/graphite.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><meta name="do [...]
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+<p>To use this Apache Druid extension, <a href="/docs/26.0.0/development/extensions.html#loading-extensions">include</a> <code>graphite-emitter</code> in the extensions load list.</p>
+<h2><a class="anchor" aria-hidden="true" id="introduction"></a><a href="#introduction" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83. [...]
+<p>This extension emits druid metrics to a graphite carbon server.
+Metrics can be sent by using <a href="http://graphite.readthedocs.io/en/latest/feeding-carbon.html#the-plaintext-protocol">plaintext</a> or <a href="http://graphite.readthedocs.io/en/latest/feeding-carbon.html#the-pickle-protocol">pickle</a> protocol.
+The pickle protocol is more efficient and supports sending batches of metrics (plaintext protocol send only one metric) in one request; batch size is configurable.</p>
+<h2><a class="anchor" aria-hidden="true" id="configuration"></a><a href="#configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.8 [...]
+<p>All the configuration parameters for graphite emitter are under <code>druid.emitter.graphite</code>.</p>
+<table>
+<thead>
+<tr><th>property</th><th>description</th><th>required?</th><th>default</th></tr>
+</thead>
+<tbody>
+<tr><td><code>druid.emitter.graphite.hostname</code></td><td>The hostname of the graphite server.</td><td>yes</td><td>none</td></tr>
+<tr><td><code>druid.emitter.graphite.port</code></td><td>The port of the graphite server.</td><td>yes</td><td>none</td></tr>
+<tr><td><code>druid.emitter.graphite.batchSize</code></td><td>Number of events to send as one batch (only for pickle protocol)</td><td>no</td><td>100</td></tr>
+<tr><td><code>druid.emitter.graphite.protocol</code></td><td>Graphite protocol; available protocols: pickle, plaintext.</td><td>no</td><td>pickle</td></tr>
+<tr><td><code>druid.emitter.graphite.eventConverter</code></td><td>Filter and converter of druid events to graphite event (please see next section).</td><td>yes</td><td>none</td></tr>
+<tr><td><code>druid.emitter.graphite.flushPeriod</code></td><td>Queue flushing period in milliseconds.</td><td>no</td><td>1 minute</td></tr>
+<tr><td><code>druid.emitter.graphite.maxQueueSize</code></td><td>Maximum size of the queue used to buffer events.</td><td>no</td><td><code>MAX_INT</code></td></tr>
+<tr><td><code>druid.emitter.graphite.alertEmitters</code></td><td>List of emitters where alerts will be forwarded to. This is a JSON list of emitter names, e.g. <code>["logging", "http"]</code></td><td>no</td><td>empty list (no forwarding)</td></tr>
+<tr><td><code>druid.emitter.graphite.requestLogEmitters</code></td><td>List of emitters where request logs (i.e., query logging events sent to emitters when <code>druid.request.logging.type</code> is set to <code>emitter</code>) will be forwarded to. This is a JSON list of emitter names, e.g. <code>["logging", "http"]</code></td><td>no</td><td>empty list (no forwarding)</td></tr>
+<tr><td><code>druid.emitter.graphite.emitWaitTime</code></td><td>wait time in milliseconds to try to send the event otherwise emitter will throwing event.</td><td>no</td><td>0</td></tr>
+<tr><td><code>druid.emitter.graphite.waitForEventTime</code></td><td>waiting time in milliseconds if necessary for an event to become available.</td><td>no</td><td>1000 (1 sec)</td></tr>
+</tbody>
+</table>
+<h3><a class="anchor" aria-hidden="true" id="supported-event-types"></a><a href="#supported-event-types" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2 [...]
+<p>The graphite emitter only emits service metric events to graphite (See <a href="/docs/26.0.0/operations/metrics.html">Druid Metrics</a> for a list of metrics).</p>
+<p>Alerts and request logs are not sent to graphite. These event types are not well represented in Graphite, which is more suited for timeseries views on numeric metrics, vs. storing non-numeric log events.</p>
+<p>Instead, alerts and request logs are optionally forwarded to other emitter implementations, specified by <code>druid.emitter.graphite.alertEmitters</code> and <code>druid.emitter.graphite.requestLogEmitters</code> respectively.</p>
+<h3><a class="anchor" aria-hidden="true" id="druid-to-graphite-event-converter"></a><a href="#druid-to-graphite-event-converter" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S1 [...]
+<p>Graphite Event Converter defines a mapping between druid metrics name plus dimensions to a Graphite metric path.
+Graphite metric path is organized using the following schema:
+<code><namespacePrefix>.[<druid service name>].[<druid hostname>].<druid metrics dimensions>.<druid metrics name></code>
+Properly naming the metrics is critical to avoid conflicts, confusing data and potentially wrong interpretation later on.</p>
+<p>Example <code>druid.historical.hist-host1_yahoo_com:8080.MyDataSourceName.GroupBy.query/time</code>:</p>
+<ul>
+<li><code>druid</code> -> namespace prefix</li>
+<li><code>historical</code> -> service name</li>
+<li><code>hist-host1.yahoo.com:8080</code> -> druid hostname</li>
+<li><code>MyDataSourceName</code> -> dimension value</li>
+<li><code>GroupBy</code> -> dimension value</li>
+<li><code>query/time</code> -> metric name</li>
+</ul>
+<p>We have two different implementation of event converter:</p>
+<h4><a class="anchor" aria-hidden="true" id="send-all-converter"></a><a href="#send-all-converter" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22- [...]
+<p>The first implementation called <code>all</code>, will send all the druid service metrics events.
+The path will be in the form <code><namespacePrefix>.[<druid service name>].[<druid hostname>].<dimensions values ordered by dimension's name>.<metric></code>
+User has control of <code><namespacePrefix>.[<druid service name>].[<druid hostname>].</code></p>
+<p>You can omit the hostname by setting <code>ignoreHostname=true</code>
+<code>druid.SERVICE_NAME.dataSourceName.queryType.query/time</code></p>
+<p>You can omit the service name by setting <code>ignoreServiceName=true</code>
+<code>druid.HOSTNAME.dataSourceName.queryType.query/time</code></p>
+<p>Elements in metric name by default are separated by "/", so graphite will create all metrics on one level. If you want to have metrics in the tree structure, you have to set <code>replaceSlashWithDot=true</code>
+Original: <code>druid.HOSTNAME.dataSourceName.queryType.query/time</code>
+Changed: <code>druid.HOSTNAME.dataSourceName.queryType.query.time</code></p>
+<pre><code class="hljs css language-json">
+druid.emitter.graphite.eventConverter={"type":"all", "namespacePrefix": "druid.test", "ignoreHostname":true, "ignoreServiceName":true}
+
+</code></pre>
+<h4><a class="anchor" aria-hidden="true" id="white-list-based-converter"></a><a href="#white-list-based-converter" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H [...]
+<p>The second implementation called <code>whiteList</code>, will send only the white listed metrics and dimensions.
+Same as for the <code>all</code> converter user has control of <code><namespacePrefix>.[<druid service name>].[<druid hostname>].</code>
+White-list based converter comes with the following default white list map located under resources in <code>./src/main/resources/defaultWhiteListMap.json</code></p>
+<p>Although user can override the default white list map by supplying a property called <code>mapPath</code>.
+This property is a String containing the path for the file containing <strong>white list map JSON object</strong>.
+For example the following converter will read the map from the file <code>/pathPrefix/fileName.json</code>.</p>
+<pre><code class="hljs css language-json">
+druid.emitter.graphite.eventConverter={"type":"whiteList", "namespacePrefix": "druid.test", "ignoreHostname":true, "ignoreServiceName":true, "mapPath":"/pathPrefix/fileName.json"}
+
+</code></pre>
+<p><strong>Druid emits a huge number of metrics we highly recommend to use the <code>whiteList</code> converter</strong></p>
+</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/development/extensions-contrib/distinctcount.html"><span class="arrow-prev">← </span><span class="function-name-prevnext">DistinctCount Aggregator</span></a><a class="docs-next button" href="/docs/26.0.0/development/extensions-contrib/influx.html"><span class="function-name-prevnext">InfluxDB Line Protocol Parser</span><span class="arrow-next"> →</span></a></div></div></div><nav class=" [...]
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+<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>InfluxDB Line Protocol Parser · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/26.0.0/development/extensions-contrib/influx.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<!--"/><meta name="docsearch:language" content="en"/><me [...]
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+ ~
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