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| <h1 class="entry-title">Apache Kudu (incubating) Weekly Update May 3, 2016</h1> |
| <p class="meta">Posted 03 May 2016 by Todd Lipcon</p> |
| </header> |
| <div class="entry-content"> |
| <p>Welcome to the seventh edition of the Kudu Weekly Update. This weekly blog post |
| covers ongoing development and news in the Apache Kudu (incubating) project.</p> |
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| <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="development-discussions-and-code-in-progress">Development discussions and code in progress</h2> |
| |
| <ul> |
| <li> |
| <p>Chris George completed his |
| <a href="http://gerrit.cloudera.org:8080/#/c/2848/">improved Spark DataSource implementation for Kudu</a> |
| and the new feature will be available in the upcoming 0.9.0 release. |
| The improved DataSource supports features such as predicate pushdown |
| and Chris reports that it is able to perform subsecond queries on |
| millions of rows of data.</p> |
| </li> |
| <li> |
| <p>As mentioned last week, Binglin Chang has been working on and off |
| on a new <a href="https://issues.apache.org/jira/browse/KUDU-1235">Get API</a> for |
| Kudu. The purpose of this new API is to provide an optimized path for |
| looking up a single row.</p> |
| |
| <p>In some initial benchmarking of the feature, it became apparent that Kudu’s |
| RPC mechanism was a scalability bottleneck on servers with 12 or more CPU |
| cores. With some more prototype optimizations of the RPC system, Binglin |
| has been able to push approximately 220K random reads per second on a single |
| server.</p> |
| |
| <p>It may be a few more weeks before this work progresses from prototype stage |
| to completion, but initial results are looking quite promising.</p> |
| </li> |
| <li> |
| <p>Discussion continued on the design document for the upcoming |
| <a href="http://gerrit.cloudera.org:8080/#/c/2642/">Replay Cache</a> feature. This feature |
| was previously introduced in an <a href="http://getkudu.io/2016/04/11/weekly-update.html">earlier weekly update |
| post</a> |
| and development is now fully under way.</p> |
| </li> |
| </ul> |
| |
| <h2 id="on-the-kudu-blog">On the Kudu blog</h2> |
| |
| <ul> |
| <li>Todd Lipcon wrote a post about <a href="http://getkudu.io/2016/04/26/ycsb.html">benchmarking Kudu insert performance with |
| YCSB</a>. This post was quite popular, |
| so Todd is currently working on a follow-up which will include more experiments |
| around Kudu configuration tuning.</li> |
| </ul> |
| |
| <h2 id="upcoming-talks-and-meetups">Upcoming talks and meetups</h2> |
| |
| <ul> |
| <li>ApacheCon Big Data will be next week in Vancouver. As always, you can check |
| the <a href="http://getkudu.io/community.html">Kudu Community page</a> for an up-to-date |
| list of conferenace sessions and meetups near you.</li> |
| </ul> |
| |
| </div> |
| </article> |
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| </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> |
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