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Posted to commits@kudu.apache.org by to...@apache.org on 2016/06/22 20:53:11 UTC
[48/51] [partial] incubator-kudu-site git commit: Initial import from
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http://git-wip-us.apache.org/repos/asf/incubator-kudu-site/blob/a3d04f9b/2016/05/09/weekly-update.html
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+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8" />
+ <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+ <meta name="viewport" content="width=device-width, initial-scale=1" />
+ <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
+ <meta name="description" content="A new open source Apache Hadoop ecosystem project, Apache Kudu (incubating) completes Hadoop's storage layer to enable fast analytics on fast data" />
+ <meta name="author" content="Cloudera" />
+ <title>Apache Kudu (incubating) - Apache Kudu (incubating) Weekly Update May 9, 2016</title>
+ <!-- Bootstrap core CSS -->
+ <link href="/css/bootstrap.min.css" rel="stylesheet" />
+
+ <!-- Custom styles for this template -->
+ <link href="/css/justified-nav.css" rel="stylesheet" />
+
+ <link href="/css/kudu.css" rel="stylesheet"/>
+ <link href="/css/asciidoc.css" rel="stylesheet"/>
+ <link rel="shortcut icon" href="/img/logo-favicon.ico" />
+ <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.1/css/font-awesome.min.css" />
+
+
+ <link rel="alternate" type="application/atom+xml"
+ title="RSS Feed for Apache Kudu blog"
+ href="/feed.xml" />
+
+
+ <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
+ <!--[if lt IE 9]>
+ <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
+ <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
+ <![endif]-->
+ </head>
+ <body>
+ <!-- Fork me on GitHub -->
+ <a class="fork-me-on-github" href="https://github.com/apache/incubator-kudu"><img src="//aral.github.io/fork-me-on-github-retina-ribbons/right-cerulean@2x.png" alt="Fork me on GitHub" /></a>
+
+ <div class="kudu-site container-fluid">
+ <!-- Static navbar -->
+ <nav class="container-fluid navbar-default">
+ <div class="navbar-header">
+ <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
+ <span class="sr-only">Toggle navigation</span>
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ </button>
+
+ <a class="logo" href="/"><img src="/img/logo_small.png" width="80" /></a>
+
+ </div>
+ <div id="navbar" class="navbar-collapse collapse navbar-right">
+ <ul class="nav navbar-nav">
+ <li >
+ <a href="/">Home</a>
+ </li>
+ <li >
+ <a href="/overview.html">Overview</a>
+ </li>
+ <li >
+ <a href="/docs/">Documentation</a>
+ </li>
+ <li >
+ <a href="/releases/">Download</a>
+ </li>
+ <li class="active">
+ <a href="/blog/">Blog</a>
+ </li>
+ <li >
+ <a href="/community.html">Community</a>
+ </li>
+ <li >
+ <a href="/faq.html">FAQ</a>
+ </li>
+ </ul>
+ </div><!--/.nav-collapse -->
+ </nav>
+
+<div class="row header">
+ <div class="col-lg-12">
+ <h2><a href="/blog">Apache Kudu (incubating) Blog</a></h2>
+ </div>
+</div>
+
+<div class="row-fluid">
+ <div class="col-lg-9">
+ <article>
+ <header>
+ <h1 class="entry-title">Apache Kudu (incubating) Weekly Update May 9, 2016</h1>
+ <p class="meta">Posted 09 May 2016 by Jean-Daniel Cryans</p>
+ </header>
+ <div class="entry-content">
+ <p>Welcome to the eighth edition of the Kudu Weekly Update. This weekly blog post
+covers ongoing development and news in the Apache Kudu (incubating) project.</p>
+
+<!--more-->
+
+<p>If you find this post useful, please let us know by emailing the
+<a href="mailto:user@kudu.incubator.apache.org">kudu-user mailing list</a> or
+tweeting at <a href="https://twitter.com/ApacheKudu">@ApacheKudu</a>. Similarly, if you\u2019re
+aware of some Kudu news we missed, let us know so we can cover it in
+a future post.</p>
+
+<h2 id="development-discussions-and-code-in-progress">Development discussions and code in progress</h2>
+
+<ul>
+ <li>
+ <p>Sameer Abhyankar posted a <a href="http://gerrit.cloudera.org:8080/#/c/2986/">patch</a>
+for <a href="https://issues.apache.org/jira/browse/KUDU-1363">KUDU-1363</a>
+that adds the ability to specify
+<a href="http://www.w3schools.com/sql/sql_in.asp">IN</a>-like predicates on column values.</p>
+ </li>
+ <li>
+ <p>Chris George and Andy Grove have both been adding new features in Kudu\u2019s
+Spark module such as methods to <a href="http://gerrit.cloudera.org:8080/#/c/2981/">create/delete tables</a>
+and <a href="http://gerrit.cloudera.org:8080/#/c/2992/">insert/update rows in the DataSource</a>.</p>
+ </li>
+ <li>
+ <p>Todd Lipcon <a href="https://issues.apache.org/jira/browse/KUDU-1437">fixed a bug</a> in RLE
+encoding that was reported by Przemyslaw Maciolek. Thank you Przemyslaw for
+reporting it and providing an easy way to reproduce it!</p>
+ </li>
+ <li>
+ <p>Adar Dembo is currently working on addressing the
+<a href="https://github.com/cloudera/kudu/blob/master/docs/design-docs/multi-master-1.0.md">issues with multi-master</a>
+and early last week he got <a href="http://gerrit.cloudera.org:8080/2879">a</a>
+<a href="http://gerrit.cloudera.org:8080/2928">few</a> <a href="http://gerrit.cloudera.org:8080/2891">patches</a>
+in that address some race conditions.</p>
+ </li>
+ <li>
+ <p>Zhen Zhang got <a href="http://gerrit.cloudera.org:8080/#/c/2858/">a first contribution</a>
+in with a patch that adds statistics in the Java client. In 0.9.0 it will be
+possible to query the client to get things like the number of bytes written or
+how many write operations were sent.</p>
+ </li>
+</ul>
+
+<h2 id="upcoming-talks-and-meetups">Upcoming talks and meetups</h2>
+
+<ul>
+ <li>Dan Burkert and Mike Percy will present Kudu at the
+<a href="http://www.meetup.com/Vancouver-Spark/events/229692936/">Vancouver Spark Meetup</a> in Vancouver, BC,
+on May 10.</li>
+</ul>
+
+ </div>
+</article>
+
+
+ </div>
+ <div class="col-lg-3 recent-posts">
+ <h3>Recent posts</h3>
+ <ul>
+
+ <li> <a href="/2016/06/21/weekly-update.html">Apache Kudu (incubating) Weekly Update June 21, 2016</a> </li>
+
+ <li> <a href="/2016/06/17/raft-consensus-single-node.html">Using Raft Consensus on a Single Node</a> </li>
+
+ <li> <a href="/2016/06/13/weekly-update.html">Apache Kudu (incubating) Weekly Update June 13, 2016</a> </li>
+
+ <li> <a href="/2016/06/10/apache-kudu-0-9-0-released.html">Apache Kudu (incubating) 0.9.0 released</a> </li>
+
+ <li> <a href="/2016/06/06/weekly-update.html">Apache Kudu (incubating) Weekly Update June 6, 2016</a> </li>
+
+ <li> <a href="/2016/06/02/no-default-partitioning.html">Default Partitioning Changes Coming in Kudu 0.9</a> </li>
+
+ <li> <a href="/2016/06/01/weekly-update.html">Apache Kudu (incubating) Weekly Update June 1, 2016</a> </li>
+
+ <li> <a href="/2016/05/23/weekly-update.html">Apache Kudu (incubating) Weekly Update May 23, 2016</a> </li>
+
+ <li> <a href="/2016/05/16/weekly-update.html">Apache Kudu (incubating) Weekly Update May 16, 2016</a> </li>
+
+ <li> <a href="/2016/05/09/weekly-update.html">Apache Kudu (incubating) Weekly Update May 9, 2016</a> </li>
+
+ <li> <a href="/2016/05/03/weekly-update.html">Apache Kudu (incubating) Weekly Update May 3, 2016</a> </li>
+
+ <li> <a href="/2016/04/26/ycsb.html">Benchmarking and Improving Kudu Insert Performance with YCSB</a> </li>
+
+ <li> <a href="/2016/04/25/weekly-update.html">Apache Kudu (incubating) Weekly Update April 25, 2016</a> </li>
+
+ <li> <a href="/2016/04/19/kudu-0-8-0-predicate-improvements.html">Predicate Improvements in Kudu 0.8</a> </li>
+
+ <li> <a href="/2016/04/18/weekly-update.html">Apache Kudu (incubating) Weekly Update April 18, 2016</a> </li>
+
+ </ul>
+ </div>
+</div>
+
+ <footer class="footer">
+ <p class="pull-left">
+ <a href="http://incubator.apache.org"><img src="/img/apache-incubator.png" width="225" height="53" align="right"/></a>
+ </p>
+ <p class="small">
+ Apache Kudu (incubating) is an effort undergoing incubation at the Apache Software
+ Foundation (ASF), sponsored by the Apache Incubator PMC. Incubation is
+ required of all newly accepted projects until a further review
+ indicates that the infrastructure, communications, and decision making
+ process have stabilized in a manner consistent with other successful
+ ASF projects. While incubation status is not necessarily a reflection
+ of the completeness or stability of the code, it does indicate that the
+ project has yet to be fully endorsed by the ASF.
+
+ Copyright © 2016 The Apache Software Foundation.
+ </p>
+ </footer>
+ </div>
+ <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
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+ placement: 'right',
+ visible: 'touch',
+ };
+ anchors.add();
+ </script>
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+</html>
+
http://git-wip-us.apache.org/repos/asf/incubator-kudu-site/blob/a3d04f9b/2016/05/16/weekly-update.html
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diff --git a/2016/05/16/weekly-update.html b/2016/05/16/weekly-update.html
new file mode 100644
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--- /dev/null
+++ b/2016/05/16/weekly-update.html
@@ -0,0 +1,264 @@
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8" />
+ <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+ <meta name="viewport" content="width=device-width, initial-scale=1" />
+ <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
+ <meta name="description" content="A new open source Apache Hadoop ecosystem project, Apache Kudu (incubating) completes Hadoop's storage layer to enable fast analytics on fast data" />
+ <meta name="author" content="Cloudera" />
+ <title>Apache Kudu (incubating) - Apache Kudu (incubating) Weekly Update May 16, 2016</title>
+ <!-- Bootstrap core CSS -->
+ <link href="/css/bootstrap.min.css" rel="stylesheet" />
+
+ <!-- Custom styles for this template -->
+ <link href="/css/justified-nav.css" rel="stylesheet" />
+
+ <link href="/css/kudu.css" rel="stylesheet"/>
+ <link href="/css/asciidoc.css" rel="stylesheet"/>
+ <link rel="shortcut icon" href="/img/logo-favicon.ico" />
+ <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.1/css/font-awesome.min.css" />
+
+
+ <link rel="alternate" type="application/atom+xml"
+ title="RSS Feed for Apache Kudu blog"
+ href="/feed.xml" />
+
+
+ <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
+ <!--[if lt IE 9]>
+ <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
+ <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
+ <![endif]-->
+ </head>
+ <body>
+ <!-- Fork me on GitHub -->
+ <a class="fork-me-on-github" href="https://github.com/apache/incubator-kudu"><img src="//aral.github.io/fork-me-on-github-retina-ribbons/right-cerulean@2x.png" alt="Fork me on GitHub" /></a>
+
+ <div class="kudu-site container-fluid">
+ <!-- Static navbar -->
+ <nav class="container-fluid navbar-default">
+ <div class="navbar-header">
+ <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
+ <span class="sr-only">Toggle navigation</span>
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ </button>
+
+ <a class="logo" href="/"><img src="/img/logo_small.png" width="80" /></a>
+
+ </div>
+ <div id="navbar" class="navbar-collapse collapse navbar-right">
+ <ul class="nav navbar-nav">
+ <li >
+ <a href="/">Home</a>
+ </li>
+ <li >
+ <a href="/overview.html">Overview</a>
+ </li>
+ <li >
+ <a href="/docs/">Documentation</a>
+ </li>
+ <li >
+ <a href="/releases/">Download</a>
+ </li>
+ <li class="active">
+ <a href="/blog/">Blog</a>
+ </li>
+ <li >
+ <a href="/community.html">Community</a>
+ </li>
+ <li >
+ <a href="/faq.html">FAQ</a>
+ </li>
+ </ul>
+ </div><!--/.nav-collapse -->
+ </nav>
+
+<div class="row header">
+ <div class="col-lg-12">
+ <h2><a href="/blog">Apache Kudu (incubating) Blog</a></h2>
+ </div>
+</div>
+
+<div class="row-fluid">
+ <div class="col-lg-9">
+ <article>
+ <header>
+ <h1 class="entry-title">Apache Kudu (incubating) Weekly Update May 16, 2016</h1>
+ <p class="meta">Posted 16 May 2016 by Todd Lipcon</p>
+ </header>
+ <div class="entry-content">
+ <p>Welcome to the ninth edition of the Kudu Weekly Update. This weekly blog post
+covers ongoing development and news in the Apache Kudu (incubating) project.</p>
+
+<!--more-->
+
+<p>If you find this post useful, please let us know by emailing the
+<a href="mailto:user@kudu.incubator.apache.org">kudu-user mailing list</a> or
+tweeting at <a href="https://twitter.com/ApacheKudu">@ApacheKudu</a>. Similarly, if you\u2019re
+aware of some Kudu news we missed, let us know so we can cover it in
+a future post.</p>
+
+<h2 id="development-discussions-and-code-in-progress">Development discussions and code in progress</h2>
+
+<ul>
+ <li>
+ <p>Development and code reviews continued on Sameer Abhyankar\u2019s patch which
+adds support for pushing down <a href="http://gerrit.cloudera.org:8080/#/c/2986/">\u2018IN\u2019 predicates</a>
+to the Kudu tablet servers.</p>
+ </li>
+ <li>
+ <p>Todd Lipcon and Binglin Chang have been continuing to work on improving throughput
+for a high throughput random-read use case. Initial profiling indicated that the
+RPC system was a bottleneck, and patches have started to land which improve
+the throughput:</p>
+
+ <p>The largest bottleneck was in the queue which transfers RPC calls from the
+libev \u201creactor\u201d threads which perform network IO to the \u201cworker\u201d threads
+which service the actual requests. Binglin borrowed some ideas from Facebook\u2019s
+<a href="https://github.com/facebook/folly">folly</a> library, and implemented an
+<a href="http://gerrit.cloudera.org:8080/#/c/2938/">improved queue</a>
+which reduces context switches and lock contention while also
+improving CPU cache locality of the worker threads.</p>
+
+ <p>Todd identified that the hash function used to map connections to reactor
+threads was poor, resulting in uneven load distribution across cores.
+A <a href="http://gerrit.cloudera.org:8080/#/c/2939/">simple patch to change the hashcode implementation</a>
+improved the distribution substantially.</p>
+
+ <p>With just these patches, an RPC stress benchmark was improved from about 202K RPCs/second
+to 768K RPCs/second on a 24-core machine. Further improvements are in flight
+and under review this week.</p>
+ </li>
+ <li>
+ <p>Zhen Zhang is continuing to focus on adding more visibility into
+performance and resource usage by adding the ability to propagate various
+per-operation metrics from the server side back to the client. His latest patch
+under review <a href="http://gerrit.cloudera.org:8080/#/c/3013/">exposes scanner cache hit rate metrics</a>
+to the client.</p>
+ </li>
+ <li>
+ <p>Todd Lipcon and Sarah Jelinek continue to make progress on the
+implementation of a persistent-memory backed block cache.
+This week a <a href="http://gerrit.cloudera.org:8080/#/c/2957/">substantial refactor to the block cache interface</a>
+was committed in preparation for the <a href="http://gerrit.cloudera.org:8080/#/c/2593/">NVM cache itself</a>.</p>
+ </li>
+ <li>
+ <p>Congratulations to Will Berkeley, a new contributor who has been
+contributing small fixes and improvements such as
+<a href="http://gerrit.cloudera.org:8080/#/c/3022/">exposing table partitioning information in the master web UI</a>.
+Thanks, Will!</p>
+ </li>
+ <li>
+ <p>David Alves has been continuing to make progress towards his implementation of
+the <a href="http://gerrit.cloudera.org:8080/#/c/2642/">Replay Cache</a>.
+This week, he refactored and cleaned up much of the client code involving
+error handling and retrying write operations, in preparation to inserting
+unique identifiers for these and other operations.</p>
+ </li>
+ <li>
+ <p>Chris George has continued to work on the Spark DataSource implementation.
+In particular, work is progressing on support for <a href="http://gerrit.cloudera.org:8080/#/c/2992/">inserting and updating
+rows via Spark</a>.</p>
+ </li>
+ <li>
+ <p>Todd Lipcon and Mike Percy both committed improvements which will help speed up
+startup. Measurements on a cluster where each node stores a few TB of data
+showed a 3x improvement in startup time.</p>
+ </li>
+</ul>
+
+<h2 id="upcoming-talks-and-meetups">Upcoming talks and meetups</h2>
+
+<ul>
+ <li>Mladen Kovacevi will be presenting Kudu at the
+<a href="http://www.meetup.com/Big-Data-Montreal/events/230879277/?eventId=230879277">Big Data Montreal</a>
+meetup.</li>
+</ul>
+
+ </div>
+</article>
+
+
+ </div>
+ <div class="col-lg-3 recent-posts">
+ <h3>Recent posts</h3>
+ <ul>
+
+ <li> <a href="/2016/06/21/weekly-update.html">Apache Kudu (incubating) Weekly Update June 21, 2016</a> </li>
+
+ <li> <a href="/2016/06/17/raft-consensus-single-node.html">Using Raft Consensus on a Single Node</a> </li>
+
+ <li> <a href="/2016/06/13/weekly-update.html">Apache Kudu (incubating) Weekly Update June 13, 2016</a> </li>
+
+ <li> <a href="/2016/06/10/apache-kudu-0-9-0-released.html">Apache Kudu (incubating) 0.9.0 released</a> </li>
+
+ <li> <a href="/2016/06/06/weekly-update.html">Apache Kudu (incubating) Weekly Update June 6, 2016</a> </li>
+
+ <li> <a href="/2016/06/02/no-default-partitioning.html">Default Partitioning Changes Coming in Kudu 0.9</a> </li>
+
+ <li> <a href="/2016/06/01/weekly-update.html">Apache Kudu (incubating) Weekly Update June 1, 2016</a> </li>
+
+ <li> <a href="/2016/05/23/weekly-update.html">Apache Kudu (incubating) Weekly Update May 23, 2016</a> </li>
+
+ <li> <a href="/2016/05/16/weekly-update.html">Apache Kudu (incubating) Weekly Update May 16, 2016</a> </li>
+
+ <li> <a href="/2016/05/09/weekly-update.html">Apache Kudu (incubating) Weekly Update May 9, 2016</a> </li>
+
+ <li> <a href="/2016/05/03/weekly-update.html">Apache Kudu (incubating) Weekly Update May 3, 2016</a> </li>
+
+ <li> <a href="/2016/04/26/ycsb.html">Benchmarking and Improving Kudu Insert Performance with YCSB</a> </li>
+
+ <li> <a href="/2016/04/25/weekly-update.html">Apache Kudu (incubating) Weekly Update April 25, 2016</a> </li>
+
+ <li> <a href="/2016/04/19/kudu-0-8-0-predicate-improvements.html">Predicate Improvements in Kudu 0.8</a> </li>
+
+ <li> <a href="/2016/04/18/weekly-update.html">Apache Kudu (incubating) Weekly Update April 18, 2016</a> </li>
+
+ </ul>
+ </div>
+</div>
+
+ <footer class="footer">
+ <p class="pull-left">
+ <a href="http://incubator.apache.org"><img src="/img/apache-incubator.png" width="225" height="53" align="right"/></a>
+ </p>
+ <p class="small">
+ Apache Kudu (incubating) is an effort undergoing incubation at the Apache Software
+ Foundation (ASF), sponsored by the Apache Incubator PMC. Incubation is
+ required of all newly accepted projects until a further review
+ indicates that the infrastructure, communications, and decision making
+ process have stabilized in a manner consistent with other successful
+ ASF projects. While incubation status is not necessarily a reflection
+ of the completeness or stability of the code, it does indicate that the
+ project has yet to be fully endorsed by the ASF.
+
+ Copyright © 2016 The Apache Software Foundation.
+ </p>
+ </footer>
+ </div>
+ <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
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+
http://git-wip-us.apache.org/repos/asf/incubator-kudu-site/blob/a3d04f9b/2016/05/23/weekly-update.html
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diff --git a/2016/05/23/weekly-update.html b/2016/05/23/weekly-update.html
new file mode 100644
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--- /dev/null
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@@ -0,0 +1,253 @@
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8" />
+ <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+ <meta name="viewport" content="width=device-width, initial-scale=1" />
+ <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
+ <meta name="description" content="A new open source Apache Hadoop ecosystem project, Apache Kudu (incubating) completes Hadoop's storage layer to enable fast analytics on fast data" />
+ <meta name="author" content="Cloudera" />
+ <title>Apache Kudu (incubating) - Apache Kudu (incubating) Weekly Update May 23, 2016</title>
+ <!-- Bootstrap core CSS -->
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+
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+ <link href="/css/asciidoc.css" rel="stylesheet"/>
+ <link rel="shortcut icon" href="/img/logo-favicon.ico" />
+ <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.1/css/font-awesome.min.css" />
+
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+ <link rel="alternate" type="application/atom+xml"
+ title="RSS Feed for Apache Kudu blog"
+ href="/feed.xml" />
+
+
+ <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
+ <!--[if lt IE 9]>
+ <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
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+ <![endif]-->
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+ <!-- Fork me on GitHub -->
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+
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+ <!-- Static navbar -->
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+ <ul class="nav navbar-nav">
+ <li >
+ <a href="/">Home</a>
+ </li>
+ <li >
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+ </li>
+ <li >
+ <a href="/docs/">Documentation</a>
+ </li>
+ <li >
+ <a href="/releases/">Download</a>
+ </li>
+ <li class="active">
+ <a href="/blog/">Blog</a>
+ </li>
+ <li >
+ <a href="/community.html">Community</a>
+ </li>
+ <li >
+ <a href="/faq.html">FAQ</a>
+ </li>
+ </ul>
+ </div><!--/.nav-collapse -->
+ </nav>
+
+<div class="row header">
+ <div class="col-lg-12">
+ <h2><a href="/blog">Apache Kudu (incubating) Blog</a></h2>
+ </div>
+</div>
+
+<div class="row-fluid">
+ <div class="col-lg-9">
+ <article>
+ <header>
+ <h1 class="entry-title">Apache Kudu (incubating) Weekly Update May 23, 2016</h1>
+ <p class="meta">Posted 23 May 2016 by Todd Lipcon</p>
+ </header>
+ <div class="entry-content">
+ <p>Welcome to the tenth edition of the Kudu Weekly Update. This weekly blog post
+covers ongoing development and news in the Apache Kudu (incubating) project.</p>
+
+<!--more-->
+
+<p>If you find this post useful, please let us know by emailing the
+<a href="mailto:user@kudu.incubator.apache.org">kudu-user mailing list</a> or
+tweeting at <a href="https://twitter.com/ApacheKudu">@ApacheKudu</a>. Similarly, if you\u2019re
+aware of some Kudu news we missed, let us know so we can cover it in
+a future post.</p>
+
+<h2 id="kudu-related-podcast">Kudu related podcast</h2>
+
+<ul>
+ <li>Two committers, Mike Percy and Dan Burkert, appeared on the
+<a href="https://developer.ibm.com/tv/apachecon-apache-projects/">IBM New Builders podcast</a>
+to talk about Apache Kudu, how they got involved, and what sort of
+workloads it is best suited for.</li>
+</ul>
+
+<h2 id="development-discussions-and-code-in-progress">Development discussions and code in progress</h2>
+
+<ul>
+ <li>
+ <p>Jean-Daniel Cryans is again acting as the release manager for the upcoming
+0.9.0 release. The git branch for 0.9 has now been cut, and only bug fixes
+or small improvements will be committed to that branch between now and the
+first release candidate.</p>
+ </li>
+ <li>
+ <p>Since Kudu\u2019s initial release, one of the most commonly requested features
+has been support for the <code>UPSERT</code> operation. <code>UPSERT</code>, known in some other
+databases as <code>INSERT ... ON DUPLICATE KEY UPDATE</code>. This operation has the
+semantics of an <code>INSERT</code> if no key already exists with the provided primary
+key. Otherwise, it replaces the existing row with the new values.</p>
+
+ <p>This week, several developers collaborated to add support for this operation.
+Todd Lipcon implemented
+<a href="http://gerrit.cloudera.org:8080/#/c/3101/">support on the server side</a>,
+C++ client, and <a href="http://gerrit.cloudera.org:8080/#/c/3128/">Python client</a>.
+Jean-Daniel Cryans added support in the
+<a href="http://gerrit.cloudera.org:8080/#/c/3123/">Java client</a>. Ara Ebrahimi
+and Will Berkeley have started working on
+<a href="http://gerrit.cloudera.org:8080/#/c/3145/">integrating upsert support into the Flume sink</a>.</p>
+ </li>
+ <li>
+ <p>Mike Percy started working on support for <a href="http://gerrit.cloudera.org:8080/#/c/3135/">basic disk
+space reservations</a>
+in the tablet server. This feature will cause the tablet server to stop
+writing to a disk before it\u2019s full, preventing crashes due to running
+out of space.</p>
+ </li>
+ <li>
+ <p>Chris George and Andy Grove collaborated on support for <a href="http://gerrit.cloudera.org:8080/#/c/2992/">insertions and
+updates in the Spark DataSource</a>,
+and the patch was committed towards the end of the week. Brent Gardner
+has also been helping with the Spark integration, and fixed an important
+<a href="https://issues.apache.org/jira/browse/KUDU-1453">connection leak bug</a>
+in the initial implementation.</p>
+ </li>
+ <li>
+ <p>David Alves worked on reviving a 7-month old patch by Jingkai Yuan which
+implements a <a href="http://gerrit.cloudera.org:8080/#/c/1210/">integer delta encoding scheme</a>
+that is meant to be efficient both in terms of CPU and disk space. This
+encoding scheme is also designed to take advantage of modern CPU instruction sets
+such as AVX and AVX2.</p>
+ </li>
+</ul>
+
+<h2 id="upcoming-talks-and-meetups">Upcoming talks and meetups</h2>
+
+<ul>
+ <li>Ryan Bosshart will be presenting Kudu at the <a href="http://www.meetup.com/DFW-Cloudera-User-Group/events/230547045/">Dallas/Fort Worth
+Cloudera User Group</a>.</li>
+</ul>
+
+
+ </div>
+</article>
+
+
+ </div>
+ <div class="col-lg-3 recent-posts">
+ <h3>Recent posts</h3>
+ <ul>
+
+ <li> <a href="/2016/06/21/weekly-update.html">Apache Kudu (incubating) Weekly Update June 21, 2016</a> </li>
+
+ <li> <a href="/2016/06/17/raft-consensus-single-node.html">Using Raft Consensus on a Single Node</a> </li>
+
+ <li> <a href="/2016/06/13/weekly-update.html">Apache Kudu (incubating) Weekly Update June 13, 2016</a> </li>
+
+ <li> <a href="/2016/06/10/apache-kudu-0-9-0-released.html">Apache Kudu (incubating) 0.9.0 released</a> </li>
+
+ <li> <a href="/2016/06/06/weekly-update.html">Apache Kudu (incubating) Weekly Update June 6, 2016</a> </li>
+
+ <li> <a href="/2016/06/02/no-default-partitioning.html">Default Partitioning Changes Coming in Kudu 0.9</a> </li>
+
+ <li> <a href="/2016/06/01/weekly-update.html">Apache Kudu (incubating) Weekly Update June 1, 2016</a> </li>
+
+ <li> <a href="/2016/05/23/weekly-update.html">Apache Kudu (incubating) Weekly Update May 23, 2016</a> </li>
+
+ <li> <a href="/2016/05/16/weekly-update.html">Apache Kudu (incubating) Weekly Update May 16, 2016</a> </li>
+
+ <li> <a href="/2016/05/09/weekly-update.html">Apache Kudu (incubating) Weekly Update May 9, 2016</a> </li>
+
+ <li> <a href="/2016/05/03/weekly-update.html">Apache Kudu (incubating) Weekly Update May 3, 2016</a> </li>
+
+ <li> <a href="/2016/04/26/ycsb.html">Benchmarking and Improving Kudu Insert Performance with YCSB</a> </li>
+
+ <li> <a href="/2016/04/25/weekly-update.html">Apache Kudu (incubating) Weekly Update April 25, 2016</a> </li>
+
+ <li> <a href="/2016/04/19/kudu-0-8-0-predicate-improvements.html">Predicate Improvements in Kudu 0.8</a> </li>
+
+ <li> <a href="/2016/04/18/weekly-update.html">Apache Kudu (incubating) Weekly Update April 18, 2016</a> </li>
+
+ </ul>
+ </div>
+</div>
+
+ <footer class="footer">
+ <p class="pull-left">
+ <a href="http://incubator.apache.org"><img src="/img/apache-incubator.png" width="225" height="53" align="right"/></a>
+ </p>
+ <p class="small">
+ Apache Kudu (incubating) is an effort undergoing incubation at the Apache Software
+ Foundation (ASF), sponsored by the Apache Incubator PMC. Incubation is
+ required of all newly accepted projects until a further review
+ indicates that the infrastructure, communications, and decision making
+ process have stabilized in a manner consistent with other successful
+ ASF projects. While incubation status is not necessarily a reflection
+ of the completeness or stability of the code, it does indicate that the
+ project has yet to be fully endorsed by the ASF.
+
+ Copyright © 2016 The Apache Software Foundation.
+ </p>
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+
http://git-wip-us.apache.org/repos/asf/incubator-kudu-site/blob/a3d04f9b/2016/06/01/weekly-update.html
----------------------------------------------------------------------
diff --git a/2016/06/01/weekly-update.html b/2016/06/01/weekly-update.html
new file mode 100644
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--- /dev/null
+++ b/2016/06/01/weekly-update.html
@@ -0,0 +1,219 @@
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8" />
+ <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+ <meta name="viewport" content="width=device-width, initial-scale=1" />
+ <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
+ <meta name="description" content="A new open source Apache Hadoop ecosystem project, Apache Kudu (incubating) completes Hadoop's storage layer to enable fast analytics on fast data" />
+ <meta name="author" content="Cloudera" />
+ <title>Apache Kudu (incubating) - Apache Kudu (incubating) Weekly Update June 1, 2016</title>
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+
+ <!-- Custom styles for this template -->
+ <link href="/css/justified-nav.css" rel="stylesheet" />
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+ <link href="/css/asciidoc.css" rel="stylesheet"/>
+ <link rel="shortcut icon" href="/img/logo-favicon.ico" />
+ <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.1/css/font-awesome.min.css" />
+
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+ <link rel="alternate" type="application/atom+xml"
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+ <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
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+ <![endif]-->
+ </head>
+ <body>
+ <!-- Fork me on GitHub -->
+ <a class="fork-me-on-github" href="https://github.com/apache/incubator-kudu"><img src="//aral.github.io/fork-me-on-github-retina-ribbons/right-cerulean@2x.png" alt="Fork me on GitHub" /></a>
+
+ <div class="kudu-site container-fluid">
+ <!-- Static navbar -->
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+ <li class="active">
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+ </li>
+ <li >
+ <a href="/community.html">Community</a>
+ </li>
+ <li >
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+ </li>
+ </ul>
+ </div><!--/.nav-collapse -->
+ </nav>
+
+<div class="row header">
+ <div class="col-lg-12">
+ <h2><a href="/blog">Apache Kudu (incubating) Blog</a></h2>
+ </div>
+</div>
+
+<div class="row-fluid">
+ <div class="col-lg-9">
+ <article>
+ <header>
+ <h1 class="entry-title">Apache Kudu (incubating) Weekly Update June 1, 2016</h1>
+ <p class="meta">Posted 01 Jun 2016 by Jean-Daniel Cryans</p>
+ </header>
+ <div class="entry-content">
+ <p>Welcome to the eleventh edition of the Kudu Weekly Update. This weekly blog post
+covers ongoing development and news in the Apache Kudu (incubating) project.</p>
+
+<!--more-->
+
+<p>If you find this post useful, please let us know by emailing the
+<a href="mailto:user@kudu.incubator.apache.org">kudu-user mailing list</a> or
+tweeting at <a href="https://twitter.com/ApacheKudu">@ApacheKudu</a>. Similarly, if you\u2019re
+aware of some Kudu news we missed, let us know so we can cover it in
+a future post.</p>
+
+<h2 id="development-discussions-and-code-in-progress">Development discussions and code in progress</h2>
+
+<ul>
+ <li>
+ <p>Jean-Daniel Cryans, the release manager for 0.9.0, <a href="http://mail-archives.apache.org/mod_mbox/incubator-kudu-dev/201605.mbox/%3CCAGpTDNe_gV5TTsJQSjx_Q-hSGjK9TesWkyP-k9rnhd0mBtYAYg%40mail.gmail.com%3E">indicated</a>
+that the release is almost ready and the first release candidate will be put up for vote this
+week.</p>
+ </li>
+ <li>
+ <p>Dan Burkert pushed <a href="http://gerrit.cloudera.org:8080/3131">a change</a> that disallows default
+partitioning when creating a new table. This is due to many reports from users experiencing bad
+performance because their table was created with only one tablet. Kudu will now force users to
+partition their tables.</p>
+ </li>
+ <li>
+ <p>Todd Lipcon ran YCSB stress tests on a cluster and discovered that compactions were taking hours
+instead of seconds. He pushed <a href="http://gerrit.cloudera.org:8080/#/c/3221/">a change</a> that solves
+the issue as part of our <a href="https://issues.apache.org/jira/browse/KUDU-749">general effort</a> to
+improve performance for zipfian update workloads.</p>
+ </li>
+ <li>
+ <p>Todd also <a href="http://gerrit.cloudera.org:8080/#/c/3186/">changed</a> some flush-related defaults to
+encourage parallel IO and larger flushes. This is based on his previous work that he documented
+in this <a href="http://getkudu.io/2016/04/26/ycsb.html">blog post</a>.</p>
+ </li>
+ <li>
+ <p>Will Berkeley made a few improvements last week, but <a href="http://gerrit.cloudera.org:8080/3199">one</a>
+we\u2019d like to call out is that he removed the Java\u2019s kudu-mapreduce module dependency on Hadoop\u2019s
+hadoop-common test jar. This solved build issues while also removing a nasty dependency.</p>
+ </li>
+</ul>
+
+ </div>
+</article>
+
+
+ </div>
+ <div class="col-lg-3 recent-posts">
+ <h3>Recent posts</h3>
+ <ul>
+
+ <li> <a href="/2016/06/21/weekly-update.html">Apache Kudu (incubating) Weekly Update June 21, 2016</a> </li>
+
+ <li> <a href="/2016/06/17/raft-consensus-single-node.html">Using Raft Consensus on a Single Node</a> </li>
+
+ <li> <a href="/2016/06/13/weekly-update.html">Apache Kudu (incubating) Weekly Update June 13, 2016</a> </li>
+
+ <li> <a href="/2016/06/10/apache-kudu-0-9-0-released.html">Apache Kudu (incubating) 0.9.0 released</a> </li>
+
+ <li> <a href="/2016/06/06/weekly-update.html">Apache Kudu (incubating) Weekly Update June 6, 2016</a> </li>
+
+ <li> <a href="/2016/06/02/no-default-partitioning.html">Default Partitioning Changes Coming in Kudu 0.9</a> </li>
+
+ <li> <a href="/2016/06/01/weekly-update.html">Apache Kudu (incubating) Weekly Update June 1, 2016</a> </li>
+
+ <li> <a href="/2016/05/23/weekly-update.html">Apache Kudu (incubating) Weekly Update May 23, 2016</a> </li>
+
+ <li> <a href="/2016/05/16/weekly-update.html">Apache Kudu (incubating) Weekly Update May 16, 2016</a> </li>
+
+ <li> <a href="/2016/05/09/weekly-update.html">Apache Kudu (incubating) Weekly Update May 9, 2016</a> </li>
+
+ <li> <a href="/2016/05/03/weekly-update.html">Apache Kudu (incubating) Weekly Update May 3, 2016</a> </li>
+
+ <li> <a href="/2016/04/26/ycsb.html">Benchmarking and Improving Kudu Insert Performance with YCSB</a> </li>
+
+ <li> <a href="/2016/04/25/weekly-update.html">Apache Kudu (incubating) Weekly Update April 25, 2016</a> </li>
+
+ <li> <a href="/2016/04/19/kudu-0-8-0-predicate-improvements.html">Predicate Improvements in Kudu 0.8</a> </li>
+
+ <li> <a href="/2016/04/18/weekly-update.html">Apache Kudu (incubating) Weekly Update April 18, 2016</a> </li>
+
+ </ul>
+ </div>
+</div>
+
+ <footer class="footer">
+ <p class="pull-left">
+ <a href="http://incubator.apache.org"><img src="/img/apache-incubator.png" width="225" height="53" align="right"/></a>
+ </p>
+ <p class="small">
+ Apache Kudu (incubating) is an effort undergoing incubation at the Apache Software
+ Foundation (ASF), sponsored by the Apache Incubator PMC. Incubation is
+ required of all newly accepted projects until a further review
+ indicates that the infrastructure, communications, and decision making
+ process have stabilized in a manner consistent with other successful
+ ASF projects. While incubation status is not necessarily a reflection
+ of the completeness or stability of the code, it does indicate that the
+ project has yet to be fully endorsed by the ASF.
+
+ Copyright © 2016 The Apache Software Foundation.
+ </p>
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+
http://git-wip-us.apache.org/repos/asf/incubator-kudu-site/blob/a3d04f9b/2016/06/02/no-default-partitioning.html
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diff --git a/2016/06/02/no-default-partitioning.html b/2016/06/02/no-default-partitioning.html
new file mode 100644
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+++ b/2016/06/02/no-default-partitioning.html
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+<!DOCTYPE html>
+<html lang="en">
+ <head>
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+ <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+ <meta name="viewport" content="width=device-width, initial-scale=1" />
+ <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
+ <meta name="description" content="A new open source Apache Hadoop ecosystem project, Apache Kudu (incubating) completes Hadoop's storage layer to enable fast analytics on fast data" />
+ <meta name="author" content="Cloudera" />
+ <title>Apache Kudu (incubating) - Default Partitioning Changes Coming in Kudu 0.9</title>
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+ <link href="/css/kudu.css" rel="stylesheet"/>
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+ <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.1/css/font-awesome.min.css" />
+
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+ <link rel="alternate" type="application/atom+xml"
+ title="RSS Feed for Apache Kudu blog"
+ href="/feed.xml" />
+
+
+ <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
+ <!--[if lt IE 9]>
+ <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
+ <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
+ <![endif]-->
+ </head>
+ <body>
+ <!-- Fork me on GitHub -->
+ <a class="fork-me-on-github" href="https://github.com/apache/incubator-kudu"><img src="//aral.github.io/fork-me-on-github-retina-ribbons/right-cerulean@2x.png" alt="Fork me on GitHub" /></a>
+
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+ <!-- Static navbar -->
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+ </li>
+ <li >
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+ </li>
+ <li >
+ <a href="/releases/">Download</a>
+ </li>
+ <li class="active">
+ <a href="/blog/">Blog</a>
+ </li>
+ <li >
+ <a href="/community.html">Community</a>
+ </li>
+ <li >
+ <a href="/faq.html">FAQ</a>
+ </li>
+ </ul>
+ </div><!--/.nav-collapse -->
+ </nav>
+
+<div class="row header">
+ <div class="col-lg-12">
+ <h2><a href="/blog">Apache Kudu (incubating) Blog</a></h2>
+ </div>
+</div>
+
+<div class="row-fluid">
+ <div class="col-lg-9">
+ <article>
+ <header>
+ <h1 class="entry-title">Default Partitioning Changes Coming in Kudu 0.9</h1>
+ <p class="meta">Posted 02 Jun 2016 by Dan Burkert</p>
+ </header>
+ <div class="entry-content">
+ <p>The upcoming Apache Kudu (incubating) 0.9 release is changing the default
+partitioning configuration for new tables. This post will introduce the change,
+explain the motivations, and show examples of how code can be updated to work
+with the new release.</p>
+
+<!--more-->
+
+<p>The most common source of frustration with new Kudu users is the default
+partitioning behavior when creating new tables. If partitioning is not
+specified, the Kudu client prior to 0.9 creates tables with a <em>single tablet</em>.
+Single tablet tables are a Kudu anti-pattern, since they are unable to get the
+scalability benefit of distributing data across the cluster, and instead keep
+all data on a single machine.</p>
+
+<p>Unfortunately, automatically choosing a better default partitioning
+configuration for new tables is not simple. In most cases, hash partitioning on
+the primary key is a better default, but this approach can have its own
+drawbacks. In particular, it is not clear how many buckets should be used for
+the new table.</p>
+
+<p>Since there is no bullet-proof default and changing the partitioning
+configuration after table creation is impossible, <a href="https://lists.apache.org/thread.html/ca8972620839109334493424a1022fc08c77c315d9d623f5caaa815f@1463699013@%3Cuser.kudu.apache.org%3E">we
+decided</a>
+to remove the default altogether. Removing the default is a backwards
+incompatible change, so it must be done before the 1.0 release. If we later find
+a better way to create a default partitioning configuration, it should be
+possible to adopt it in a backwards compatible way. The result of removing the
+default is that new tables created with the 0.9 client must specify a
+partitioning configuration, or table creation will fail. You can still create a
+table with a single tablet, but it must be configured explicitly. These changes
+only affect new table creation; existing tables, including tables created with
+default partitioning before the 0.9 release, will continue to work.</p>
+
+<p>In most cases updating existing code to explicitly set a partitioning
+configuration should be simple. The examples below add hash partitioning, but
+you can also specify range partitioning or a combination of range and hash
+partitioning. See the <a href="http://getkudu.io/docs/schema_design.html#data-distribution">schema design
+guide</a> for more
+advanced configurations.</p>
+
+<h1 id="c-client">C++ Client</h1>
+
+<p>With the C++ client, creating a new table with hash partitions is as simple as
+calling <code>KuduTableCreator:add_hash_partitions</code> with the columns to hash and the
+number of buckets to use:</p>
+
+<p><code>cpp
+unique_ptr<KuduTableCreator> table_creator(my_client->NewTableCreator());
+Status create_status = table_creator->table_name("my-table")
+ .schema(my_schema)
+ .add_hash_partitions({ "key_column_a", "key_column_b" }, 16)
+ .Create();
+if (!create_status.ok() { /* handle error */ }
+</code></p>
+
+<h1 id="java-client">Java Client</h1>
+
+<p>And similarly, in Java:</p>
+
+<p><code>java
+List<String> hashColumns = new ArrayList<>();
+hashColumns.add("key_column_a");
+hashColumn.add("key_column_b");
+CreateTableOptions options = new CreateTableOptions().addHashPartitions(hashColumns, 16);
+myClient.createTable("my-table", my_schema, options);
+</code></p>
+
+<p>In the examples above, if the hash partition configuration is omitted the create
+table operation will fail with the error <code>Table partitioning must be specified
+using setRangePartitionColumns or addHashPartitions</code>. In the Java client this
+manifests as a thrown <code>IllegalArgumentException</code>, while in the C++ client it is
+returned as a <code>Status::InvalidArgument</code>.</p>
+
+<h1 id="impala">Impala</h1>
+
+<p>When creating Kudu tables with Impala, the formerly optional <code>DISTRIBUTE BY</code>
+clause is now required:</p>
+
+<p><code>SQL
+CREATE TABLE my_table (key_column_a STRING, key_column_b STRING, other_column STRING)
+DISTRIBUTE BY HASH (key_column_a, key_column_b) INTO 16 BUCKETS
+TBLPROPERTIES(
+ 'storage_handler' = 'com.cloudera.kudu.hive.KuduStorageHandler',
+ 'kudu.table_name' = 'my_table',
+ 'kudu.master_addresses' = 'kudu-master.example.com:7051',
+ 'kudu.key_columns' = 'key_column_a,key_column_b'
+);
+</code></p>
+
+ </div>
+</article>
+
+
+ </div>
+ <div class="col-lg-3 recent-posts">
+ <h3>Recent posts</h3>
+ <ul>
+
+ <li> <a href="/2016/06/21/weekly-update.html">Apache Kudu (incubating) Weekly Update June 21, 2016</a> </li>
+
+ <li> <a href="/2016/06/17/raft-consensus-single-node.html">Using Raft Consensus on a Single Node</a> </li>
+
+ <li> <a href="/2016/06/13/weekly-update.html">Apache Kudu (incubating) Weekly Update June 13, 2016</a> </li>
+
+ <li> <a href="/2016/06/10/apache-kudu-0-9-0-released.html">Apache Kudu (incubating) 0.9.0 released</a> </li>
+
+ <li> <a href="/2016/06/06/weekly-update.html">Apache Kudu (incubating) Weekly Update June 6, 2016</a> </li>
+
+ <li> <a href="/2016/06/02/no-default-partitioning.html">Default Partitioning Changes Coming in Kudu 0.9</a> </li>
+
+ <li> <a href="/2016/06/01/weekly-update.html">Apache Kudu (incubating) Weekly Update June 1, 2016</a> </li>
+
+ <li> <a href="/2016/05/23/weekly-update.html">Apache Kudu (incubating) Weekly Update May 23, 2016</a> </li>
+
+ <li> <a href="/2016/05/16/weekly-update.html">Apache Kudu (incubating) Weekly Update May 16, 2016</a> </li>
+
+ <li> <a href="/2016/05/09/weekly-update.html">Apache Kudu (incubating) Weekly Update May 9, 2016</a> </li>
+
+ <li> <a href="/2016/05/03/weekly-update.html">Apache Kudu (incubating) Weekly Update May 3, 2016</a> </li>
+
+ <li> <a href="/2016/04/26/ycsb.html">Benchmarking and Improving Kudu Insert Performance with YCSB</a> </li>
+
+ <li> <a href="/2016/04/25/weekly-update.html">Apache Kudu (incubating) Weekly Update April 25, 2016</a> </li>
+
+ <li> <a href="/2016/04/19/kudu-0-8-0-predicate-improvements.html">Predicate Improvements in Kudu 0.8</a> </li>
+
+ <li> <a href="/2016/04/18/weekly-update.html">Apache Kudu (incubating) Weekly Update April 18, 2016</a> </li>
+
+ </ul>
+ </div>
+</div>
+
+ <footer class="footer">
+ <p class="pull-left">
+ <a href="http://incubator.apache.org"><img src="/img/apache-incubator.png" width="225" height="53" align="right"/></a>
+ </p>
+ <p class="small">
+ Apache Kudu (incubating) is an effort undergoing incubation at the Apache Software
+ Foundation (ASF), sponsored by the Apache Incubator PMC. Incubation is
+ required of all newly accepted projects until a further review
+ indicates that the infrastructure, communications, and decision making
+ process have stabilized in a manner consistent with other successful
+ ASF projects. While incubation status is not necessarily a reflection
+ of the completeness or stability of the code, it does indicate that the
+ project has yet to be fully endorsed by the ASF.
+
+ Copyright © 2016 The Apache Software Foundation.
+ </p>
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+
http://git-wip-us.apache.org/repos/asf/incubator-kudu-site/blob/a3d04f9b/2016/06/06/weekly-update.html
----------------------------------------------------------------------
diff --git a/2016/06/06/weekly-update.html b/2016/06/06/weekly-update.html
new file mode 100644
index 0000000..fed6135
--- /dev/null
+++ b/2016/06/06/weekly-update.html
@@ -0,0 +1,214 @@
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8" />
+ <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+ <meta name="viewport" content="width=device-width, initial-scale=1" />
+ <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
+ <meta name="description" content="A new open source Apache Hadoop ecosystem project, Apache Kudu (incubating) completes Hadoop's storage layer to enable fast analytics on fast data" />
+ <meta name="author" content="Cloudera" />
+ <title>Apache Kudu (incubating) - Apache Kudu (incubating) Weekly Update June 6, 2016</title>
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+ <link rel="shortcut icon" href="/img/logo-favicon.ico" />
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+ </head>
+ <body>
+ <!-- Fork me on GitHub -->
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+
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+ <!-- Static navbar -->
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+ <li class="active">
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+ </li>
+ </ul>
+ </div><!--/.nav-collapse -->
+ </nav>
+
+<div class="row header">
+ <div class="col-lg-12">
+ <h2><a href="/blog">Apache Kudu (incubating) Blog</a></h2>
+ </div>
+</div>
+
+<div class="row-fluid">
+ <div class="col-lg-9">
+ <article>
+ <header>
+ <h1 class="entry-title">Apache Kudu (incubating) Weekly Update June 6, 2016</h1>
+ <p class="meta">Posted 06 Jun 2016 by Jean-Daniel Cryans</p>
+ </header>
+ <div class="entry-content">
+ <p>Welcome to the twelfth edition of the Kudu Weekly Update. This weekly blog post
+covers ongoing development and news in the Apache Kudu (incubating) project.</p>
+
+<!--more-->
+
+<p>If you find this post useful, please let us know by emailing the
+<a href="mailto:user@kudu.incubator.apache.org">kudu-user mailing list</a> or
+tweeting at <a href="https://twitter.com/ApacheKudu">@ApacheKudu</a>. Similarly, if you\u2019re
+aware of some Kudu news we missed, let us know so we can cover it in
+a future post.</p>
+
+<h2 id="development-discussions-and-code-in-progress">Development discussions and code in progress</h2>
+
+<ul>
+ <li>
+ <p>Jean-Daniel Cryans, put up <a href="http://mail-archives.apache.org/mod_mbox/incubator-kudu-dev/201606.mbox/%3CCAGpTDNduoQM0ktuZc1eW1XeXCcXhvPGftJ%3DLRB8Er5c2dZptvw%40mail.gmail.com%3E">0.9.0 RC1</a>
+for vote on the dev mailing list and it passed. The Incubator PMC (IPMC) will also need
+to vote on it before it can officially be released.</p>
+ </li>
+ <li>
+ <p>Mike Percy is working on removing LocalConsensus which is currently used for
+single node Kudu deployments. We will instead use the Raft consensus implementation
+with a replication factor of 1. This is to simplify development since we need to maintain two
+consensus implementations. It will also provide a way to migrate from single node to multi-node
+deployments. See the discussion in this <a href="http://mail-archives.apache.org/mod_mbox/kudu-dev/201605.mbox/%3CCADXBggeE6RUYchv5fa=J2geHGE8Mw4SOeoi=LjXjdfmYYSqyhQ@mail.gmail.com%3E">dev thread</a>.</p>
+ </li>
+ <li>
+ <p>Zhen Zhang got a patch in for <a href="https://issues.apache.org/jira/browse/KUDU-1444">KUDU-1444</a>
+that adds resources usage monitoring to scanners in the C++ client. In the future this could
+be leveraged by systems like Impala to augment the query profiles.</p>
+ </li>
+ <li>
+ <p>Longer term efforts for 1.0 are making good progress. Dan Burkert <a href="https://gerrit.cloudera.org/#/c/3255/">added support</a>
+in the C++ client for non-covering range partitioned tables, and David Alves has a few
+patches in for the <a href="https://gerrit.cloudera.org/#/c/2642/">Replay Cache</a>.</p>
+ </li>
+</ul>
+
+ </div>
+</article>
+
+
+ </div>
+ <div class="col-lg-3 recent-posts">
+ <h3>Recent posts</h3>
+ <ul>
+
+ <li> <a href="/2016/06/21/weekly-update.html">Apache Kudu (incubating) Weekly Update June 21, 2016</a> </li>
+
+ <li> <a href="/2016/06/17/raft-consensus-single-node.html">Using Raft Consensus on a Single Node</a> </li>
+
+ <li> <a href="/2016/06/13/weekly-update.html">Apache Kudu (incubating) Weekly Update June 13, 2016</a> </li>
+
+ <li> <a href="/2016/06/10/apache-kudu-0-9-0-released.html">Apache Kudu (incubating) 0.9.0 released</a> </li>
+
+ <li> <a href="/2016/06/06/weekly-update.html">Apache Kudu (incubating) Weekly Update June 6, 2016</a> </li>
+
+ <li> <a href="/2016/06/02/no-default-partitioning.html">Default Partitioning Changes Coming in Kudu 0.9</a> </li>
+
+ <li> <a href="/2016/06/01/weekly-update.html">Apache Kudu (incubating) Weekly Update June 1, 2016</a> </li>
+
+ <li> <a href="/2016/05/23/weekly-update.html">Apache Kudu (incubating) Weekly Update May 23, 2016</a> </li>
+
+ <li> <a href="/2016/05/16/weekly-update.html">Apache Kudu (incubating) Weekly Update May 16, 2016</a> </li>
+
+ <li> <a href="/2016/05/09/weekly-update.html">Apache Kudu (incubating) Weekly Update May 9, 2016</a> </li>
+
+ <li> <a href="/2016/05/03/weekly-update.html">Apache Kudu (incubating) Weekly Update May 3, 2016</a> </li>
+
+ <li> <a href="/2016/04/26/ycsb.html">Benchmarking and Improving Kudu Insert Performance with YCSB</a> </li>
+
+ <li> <a href="/2016/04/25/weekly-update.html">Apache Kudu (incubating) Weekly Update April 25, 2016</a> </li>
+
+ <li> <a href="/2016/04/19/kudu-0-8-0-predicate-improvements.html">Predicate Improvements in Kudu 0.8</a> </li>
+
+ <li> <a href="/2016/04/18/weekly-update.html">Apache Kudu (incubating) Weekly Update April 18, 2016</a> </li>
+
+ </ul>
+ </div>
+</div>
+
+ <footer class="footer">
+ <p class="pull-left">
+ <a href="http://incubator.apache.org"><img src="/img/apache-incubator.png" width="225" height="53" align="right"/></a>
+ </p>
+ <p class="small">
+ Apache Kudu (incubating) is an effort undergoing incubation at the Apache Software
+ Foundation (ASF), sponsored by the Apache Incubator PMC. Incubation is
+ required of all newly accepted projects until a further review
+ indicates that the infrastructure, communications, and decision making
+ process have stabilized in a manner consistent with other successful
+ ASF projects. While incubation status is not necessarily a reflection
+ of the completeness or stability of the code, it does indicate that the
+ project has yet to be fully endorsed by the ASF.
+
+ Copyright © 2016 The Apache Software Foundation.
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http://git-wip-us.apache.org/repos/asf/incubator-kudu-site/blob/a3d04f9b/2016/06/10/apache-kudu-0-9-0-released.html
----------------------------------------------------------------------
diff --git a/2016/06/10/apache-kudu-0-9-0-released.html b/2016/06/10/apache-kudu-0-9-0-released.html
new file mode 100644
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+ <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
+ <meta name="description" content="A new open source Apache Hadoop ecosystem project, Apache Kudu (incubating) completes Hadoop's storage layer to enable fast analytics on fast data" />
+ <meta name="author" content="Cloudera" />
+ <title>Apache Kudu (incubating) - Apache Kudu (incubating) 0.9.0 released</title>
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+ </div><!--/.nav-collapse -->
+ </nav>
+
+<div class="row header">
+ <div class="col-lg-12">
+ <h2><a href="/blog">Apache Kudu (incubating) Blog</a></h2>
+ </div>
+</div>
+
+<div class="row-fluid">
+ <div class="col-lg-9">
+ <article>
+ <header>
+ <h1 class="entry-title">Apache Kudu (incubating) 0.9.0 released</h1>
+ <p class="meta">Posted 10 Jun 2016 by Jean-Daniel Cryans</p>
+ </header>
+ <div class="entry-content">
+ <p>The Apache Kudu (incubating) team is happy to announce the release of Kudu
+0.9.0!</p>
+
+<p>This latest version adds basic UPSERT functionality and an improved Apache Spark Data Source
+that doesn\u2019t rely on the MapReduce I/O formats. It also improves Tablet Server
+restart time as well as write performance under high load. Finally, Kudu now enforces
+the specification of a partitioning scheme for new tables.</p>
+
+<ul>
+ <li>Read the detailed <a href="http://getkudu.io/releases/0.9.0/docs/release_notes.html">Kudu 0.9.0 release notes</a></li>
+ <li>Download the <a href="http://getkudu.io/releases/0.9.0/">Kudu 0.9.0 source release</a></li>
+</ul>
+
+ </div>
+</article>
+
+
+ </div>
+ <div class="col-lg-3 recent-posts">
+ <h3>Recent posts</h3>
+ <ul>
+
+ <li> <a href="/2016/06/21/weekly-update.html">Apache Kudu (incubating) Weekly Update June 21, 2016</a> </li>
+
+ <li> <a href="/2016/06/17/raft-consensus-single-node.html">Using Raft Consensus on a Single Node</a> </li>
+
+ <li> <a href="/2016/06/13/weekly-update.html">Apache Kudu (incubating) Weekly Update June 13, 2016</a> </li>
+
+ <li> <a href="/2016/06/10/apache-kudu-0-9-0-released.html">Apache Kudu (incubating) 0.9.0 released</a> </li>
+
+ <li> <a href="/2016/06/06/weekly-update.html">Apache Kudu (incubating) Weekly Update June 6, 2016</a> </li>
+
+ <li> <a href="/2016/06/02/no-default-partitioning.html">Default Partitioning Changes Coming in Kudu 0.9</a> </li>
+
+ <li> <a href="/2016/06/01/weekly-update.html">Apache Kudu (incubating) Weekly Update June 1, 2016</a> </li>
+
+ <li> <a href="/2016/05/23/weekly-update.html">Apache Kudu (incubating) Weekly Update May 23, 2016</a> </li>
+
+ <li> <a href="/2016/05/16/weekly-update.html">Apache Kudu (incubating) Weekly Update May 16, 2016</a> </li>
+
+ <li> <a href="/2016/05/09/weekly-update.html">Apache Kudu (incubating) Weekly Update May 9, 2016</a> </li>
+
+ <li> <a href="/2016/05/03/weekly-update.html">Apache Kudu (incubating) Weekly Update May 3, 2016</a> </li>
+
+ <li> <a href="/2016/04/26/ycsb.html">Benchmarking and Improving Kudu Insert Performance with YCSB</a> </li>
+
+ <li> <a href="/2016/04/25/weekly-update.html">Apache Kudu (incubating) Weekly Update April 25, 2016</a> </li>
+
+ <li> <a href="/2016/04/19/kudu-0-8-0-predicate-improvements.html">Predicate Improvements in Kudu 0.8</a> </li>
+
+ <li> <a href="/2016/04/18/weekly-update.html">Apache Kudu (incubating) Weekly Update April 18, 2016</a> </li>
+
+ </ul>
+ </div>
+</div>
+
+ <footer class="footer">
+ <p class="pull-left">
+ <a href="http://incubator.apache.org"><img src="/img/apache-incubator.png" width="225" height="53" align="right"/></a>
+ </p>
+ <p class="small">
+ Apache Kudu (incubating) is an effort undergoing incubation at the Apache Software
+ Foundation (ASF), sponsored by the Apache Incubator PMC. Incubation is
+ required of all newly accepted projects until a further review
+ indicates that the infrastructure, communications, and decision making
+ process have stabilized in a manner consistent with other successful
+ ASF projects. While incubation status is not necessarily a reflection
+ of the completeness or stability of the code, it does indicate that the
+ project has yet to be fully endorsed by the ASF.
+
+ Copyright © 2016 The Apache Software Foundation.
+ </p>
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+
http://git-wip-us.apache.org/repos/asf/incubator-kudu-site/blob/a3d04f9b/2016/06/13/weekly-update.html
----------------------------------------------------------------------
diff --git a/2016/06/13/weekly-update.html b/2016/06/13/weekly-update.html
new file mode 100644
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--- /dev/null
+++ b/2016/06/13/weekly-update.html
@@ -0,0 +1,222 @@
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8" />
+ <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+ <meta name="viewport" content="width=device-width, initial-scale=1" />
+ <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
+ <meta name="description" content="A new open source Apache Hadoop ecosystem project, Apache Kudu (incubating) completes Hadoop's storage layer to enable fast analytics on fast data" />
+ <meta name="author" content="Cloudera" />
+ <title>Apache Kudu (incubating) - Apache Kudu (incubating) Weekly Update June 13, 2016</title>
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+ <!-- Static navbar -->
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+ <ul class="nav navbar-nav">
+ <li >
+ <a href="/">Home</a>
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+ </li>
+ <li >
+ <a href="/docs/">Documentation</a>
+ </li>
+ <li >
+ <a href="/releases/">Download</a>
+ </li>
+ <li class="active">
+ <a href="/blog/">Blog</a>
+ </li>
+ <li >
+ <a href="/community.html">Community</a>
+ </li>
+ <li >
+ <a href="/faq.html">FAQ</a>
+ </li>
+ </ul>
+ </div><!--/.nav-collapse -->
+ </nav>
+
+<div class="row header">
+ <div class="col-lg-12">
+ <h2><a href="/blog">Apache Kudu (incubating) Blog</a></h2>
+ </div>
+</div>
+
+<div class="row-fluid">
+ <div class="col-lg-9">
+ <article>
+ <header>
+ <h1 class="entry-title">Apache Kudu (incubating) Weekly Update June 13, 2016</h1>
+ <p class="meta">Posted 13 Jun 2016 by Jean-Daniel Cryans</p>
+ </header>
+ <div class="entry-content">
+ <p>Welcome to the thirteenth edition of the Kudu Weekly Update. This weekly blog post
+covers ongoing development and news in the Apache Kudu (incubating) project.</p>
+
+<!--more-->
+
+<p>If you find this post useful, please let us know by emailing the
+<a href="mailto:user@kudu.incubator.apache.org">kudu-user mailing list</a> or
+tweeting at <a href="https://twitter.com/ApacheKudu">@ApacheKudu</a>. Similarly, if you\u2019re
+aware of some Kudu news we missed, let us know so we can cover it in
+a future post.</p>
+
+<h2 id="development-discussions-and-code-in-progress">Development discussions and code in progress</h2>
+
+<ul>
+ <li>
+ <p>The IPMC vote for 0.9.0 RC1 passed and Kudu 0.9.0 is now
+<a href="http://getkudu.io/2016/06/10/apache-kudu-0-9-0-released.html">officially released</a>. Per the
+lazily agreed-upon <a href="http://mail-archives.apache.org/mod_mbox/kudu-dev/201602.mbox/%3CCAGpTDNcMBWwX8p+yGKzHfL2xcmKTScU-rhLcQFSns1UVSbrXhw@mail.gmail.com%3E">plan</a>,
+the next release will be 1.0.0 in about two months.</p>
+ </li>
+ <li>
+ <p>Adar Dembo has been cleaning up and improving the Master process\u2019s code. Last week he
+<a href="https://gerrit.cloudera.org/#/c/2887/">finished</a> removing the per-tablet replica locations cache.</p>
+ </li>
+ <li>
+ <p>Alexey Serbin contributed his first patch last week by <a href="https://gerrit.cloudera.org/#/c/3360/">fixing</a>
+most of the unit tests that were failing on OSX.</p>
+ </li>
+ <li>
+ <p>Sameer Abhyankar is nearly finished adding support for \u201cin-list\u201d predicates,
+follow <a href="https://gerrit.cloudera.org/#/c/2986/">this link</a> to the gerrit
+review. This will enable specifying predicates in the style of \u201ccolumn IN (list, of, values)\u201d.</p>
+ </li>
+ <li>
+ <p>Mike Percy posted a few patches that remove LocalConsensus for single-node tablets, with the actual
+removal happening in this <a href="https://gerrit.cloudera.org/#/c/3350/">patch</a>.</p>
+ </li>
+</ul>
+
+<h2 id="slides-and-recordings">Slides and recordings</h2>
+
+<ul>
+ <li>Todd Lipcon presented Kudu at Berlin Buzzwords earlier this month. The recording is available
+<a href="https://berlinbuzzwords.de/session/apache-kudu-incubating-fast-analytics-fast-data">here</a>.</li>
+</ul>
+
+ </div>
+</article>
+
+
+ </div>
+ <div class="col-lg-3 recent-posts">
+ <h3>Recent posts</h3>
+ <ul>
+
+ <li> <a href="/2016/06/21/weekly-update.html">Apache Kudu (incubating) Weekly Update June 21, 2016</a> </li>
+
+ <li> <a href="/2016/06/17/raft-consensus-single-node.html">Using Raft Consensus on a Single Node</a> </li>
+
+ <li> <a href="/2016/06/13/weekly-update.html">Apache Kudu (incubating) Weekly Update June 13, 2016</a> </li>
+
+ <li> <a href="/2016/06/10/apache-kudu-0-9-0-released.html">Apache Kudu (incubating) 0.9.0 released</a> </li>
+
+ <li> <a href="/2016/06/06/weekly-update.html">Apache Kudu (incubating) Weekly Update June 6, 2016</a> </li>
+
+ <li> <a href="/2016/06/02/no-default-partitioning.html">Default Partitioning Changes Coming in Kudu 0.9</a> </li>
+
+ <li> <a href="/2016/06/01/weekly-update.html">Apache Kudu (incubating) Weekly Update June 1, 2016</a> </li>
+
+ <li> <a href="/2016/05/23/weekly-update.html">Apache Kudu (incubating) Weekly Update May 23, 2016</a> </li>
+
+ <li> <a href="/2016/05/16/weekly-update.html">Apache Kudu (incubating) Weekly Update May 16, 2016</a> </li>
+
+ <li> <a href="/2016/05/09/weekly-update.html">Apache Kudu (incubating) Weekly Update May 9, 2016</a> </li>
+
+ <li> <a href="/2016/05/03/weekly-update.html">Apache Kudu (incubating) Weekly Update May 3, 2016</a> </li>
+
+ <li> <a href="/2016/04/26/ycsb.html">Benchmarking and Improving Kudu Insert Performance with YCSB</a> </li>
+
+ <li> <a href="/2016/04/25/weekly-update.html">Apache Kudu (incubating) Weekly Update April 25, 2016</a> </li>
+
+ <li> <a href="/2016/04/19/kudu-0-8-0-predicate-improvements.html">Predicate Improvements in Kudu 0.8</a> </li>
+
+ <li> <a href="/2016/04/18/weekly-update.html">Apache Kudu (incubating) Weekly Update April 18, 2016</a> </li>
+
+ </ul>
+ </div>
+</div>
+
+ <footer class="footer">
+ <p class="pull-left">
+ <a href="http://incubator.apache.org"><img src="/img/apache-incubator.png" width="225" height="53" align="right"/></a>
+ </p>
+ <p class="small">
+ Apache Kudu (incubating) is an effort undergoing incubation at the Apache Software
+ Foundation (ASF), sponsored by the Apache Incubator PMC. Incubation is
+ required of all newly accepted projects until a further review
+ indicates that the infrastructure, communications, and decision making
+ process have stabilized in a manner consistent with other successful
+ ASF projects. While incubation status is not necessarily a reflection
+ of the completeness or stability of the code, it does indicate that the
+ project has yet to be fully endorsed by the ASF.
+
+ Copyright © 2016 The Apache Software Foundation.
+ </p>
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