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| <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 class="language-plaintext highlighter-rouge">UPSERT</code> operation. <code class="language-plaintext highlighter-rouge">UPSERT</code>, known in some other |
| databases as <code class="language-plaintext highlighter-rouge">INSERT ... ON DUPLICATE KEY UPDATE</code>. This operation has the |
| semantics of an <code class="language-plaintext highlighter-rouge">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="/2021/06/22/apache-kudu-1-15-0-released.html">Apache Kudu 1.15.0 Released</a> </li> |
| |
| <li> <a href="/2021/01/28/apache-kudu-1-14-0-release.html">Apache Kudu 1.14.0 Released</a> </li> |
| |
| <li> <a href="/2021/01/15/bloom-filter-predicate.html">Optimized joins & filtering with Bloom filter predicate in Kudu</a> </li> |
| |
| <li> <a href="/2020/09/21/apache-kudu-1-13-0-release.html">Apache Kudu 1.13.0 released</a> </li> |
| |
| <li> <a href="/2020/08/11/fine-grained-authz-ranger.html">Fine-Grained Authorization with Apache Kudu and Apache Ranger</a> </li> |
| |
| <li> <a href="/2020/07/30/building-near-real-time-big-data-lake.html">Building Near Real-time Big Data Lake</a> </li> |
| |
| <li> <a href="/2020/05/18/apache-kudu-1-12-0-release.html">Apache Kudu 1.12.0 released</a> </li> |
| |
| <li> <a href="/2019/11/20/apache-kudu-1-11-1-release.html">Apache Kudu 1.11.1 released</a> </li> |
| |
| <li> <a href="/2019/11/20/apache-kudu-1-10-1-release.html">Apache Kudu 1.10.1 released</a> </li> |
| |
| <li> <a href="/2019/07/09/apache-kudu-1-10-0-release.html">Apache Kudu 1.10.0 Released</a> </li> |
| |
| <li> <a href="/2019/04/30/location-awareness.html">Location Awareness in Kudu</a> </li> |
| |
| <li> <a href="/2019/04/22/fine-grained-authorization-with-apache-kudu-and-impala.html">Fine-Grained Authorization with Apache Kudu and Impala</a> </li> |
| |
| <li> <a href="/2019/03/19/testing-apache-kudu-applications-on-the-jvm.html">Testing Apache Kudu Applications on the JVM</a> </li> |
| |
| <li> <a href="/2019/03/15/apache-kudu-1-9-0-release.html">Apache Kudu 1.9.0 Released</a> </li> |
| |
| <li> <a href="/2019/03/05/transparent-hierarchical-storage-management-with-apache-kudu-and-impala.html">Transparent Hierarchical Storage Management with Apache Kudu and Impala</a> </li> |
| |
| </ul> |
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