| <!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 --> |
| <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 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’re |
| 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’s 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’s 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="/2016/06/24/multi-master-1-0-0.html">Master fault tolerance in Kudu 1.0</a> </li> |
| |
| <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> |
| |
| </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> |
| <script src="/js/bootstrap.js"></script> |
| <script> |
| (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ |
| (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), |
| m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) |
| })(window,document,'script','//www.google-analytics.com/analytics.js','ga'); |
| |
| ga('create', 'UA-68448017-1', 'auto'); |
| ga('send', 'pageview'); |
| |
| </script> |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/anchor-js/3.1.0/anchor.js"></script> |
| <script> |
| anchors.options = { |
| placement: 'right', |
| visible: 'touch', |
| }; |
| anchors.add(); |
| </script> |
| </body> |
| </html> |
| |
