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| <h1 class="entry-title">Apache Kudu Weekly Update November 15th, 2016</h1> |
| <p class="meta">Posted 15 Nov 2016 by David Alves</p> |
| </header> |
| <div class="entry-content"> |
| <p>Welcome to the twenty-third edition of the Kudu Weekly Update. This weekly blog post |
| covers ongoing development and news in the Apache Kudu project.</p> |
| |
| <!--more--> |
| |
| <h2 id="project-news">Project news</h2> |
| |
| <ul> |
| <li> |
| <p>The first release candidate for Kudu 1.1.0 is <a href="http://mail-archives.apache.org/mod_mbox/kudu-dev/201611.mbox/%3CCADY20s7ZKZkPmUEcTexW%3D%2B_%2BLnDY2hABZg0-UZD3jvWAs9-pog%40mail.gmail.com%3E">now available</a>.</p> |
| |
| <dl> |
| <dt>Noteworthy new features/improvements:</dt> |
| <dd> |
| <ul> |
| <li>The Python client has been brought to feature parity with the C++ and Java clients.</li> |
| <li>IN LIST predicates.</li> |
| <li>Java client now features client-side tracing.</li> |
| <li>Kudu now publishes jar files for Spark 2.0 compiled with Scala 2.11.</li> |
| <li>Kudu’s Raft implementation now features pre-elections. In our tests this has greatly improved stability.</li> |
| </ul> |
| </dd> |
| </dl> |
| |
| <p>Community developers and users are encouraged to download the source |
| tarball and vote on the release.</p> |
| |
| <p>For more information on what’s new, check out the |
| <a href="https://github.com/apache/kudu/blob/branch-1.1.x/docs/release_notes.adoc">release notes</a>. |
| <em>Note:</em> some links from these in-progress release notes will not be live until the |
| release itself is published.</p> |
| </li> |
| <li> |
| <p>On November 7th, the Kudu PMC announced that Jordan Birdsell, from State Farm, had been voted |
| in as a new committer and PMC member.</p> |
| |
| <p>Jordan’s contributions include extensive work on the python client, throwing it some much needed |
| love, and bringing it to feature parity with the other clients.</p> |
| |
| <p>Besides his extensive code contributions Jordan has also been active in reviewing other |
| developer’s patches and helping the community in general, on slack and other channels.</p> |
| |
| <p>Jordan has been doing great work and the Kudu PMC was pleased to recognize his contributions |
| with committership.</p> |
| </li> |
| <li> |
| <p>Mike Percy will be presenting Kudu Wednesday 16th November at <a href="https://apachebigdataeu2016.sched.org/">Apache Big Data Europe, in Seville</a>.</p> |
| </li> |
| <li> |
| <p>Congratulations to Haijie Hong for his <a href="https://gerrit.cloudera.org/#/c/4822/">first contribution to Kudu!</a>. |
| Haijie fixed some edge cases in BitWriter that were blocking RLE usage for 64 bit types.</p> |
| </li> |
| <li> |
| <p>Congratulations to Maxim Smyatkin for his <a href="https://gerrit.cloudera.org/#/q/Maxim">first contributions to Kudu!</a>. |
| Maxim has contributed several patches helping with debug and cleanup.</p> |
| </li> |
| </ul> |
| |
| <h2 id="development-discussions-and-code-in-progress">Development discussions and code in progress</h2> |
| |
| <ul> |
| <li> |
| <p>A lot of progress has been done towards the goals that were set in the scope docs introduced in |
| the last couple of posts. Specifically:</p> |
| |
| <ul> |
| <li> |
| <p>Dan Burkert, Todd Lipcon and Alexey Serbin have doubled down on the security effort. They have |
| been working on enabling Kerberos authentication and rpc encryption. The <a href="https://docs.google.com/document/d/1cPNDTpVkIUo676RlszpTF1gHZ8l0TdbB7zFBAuOuYUw/edit#heading=h.gsibhnd5dyem">security scope doc</a> |
| has been updated with the latest plans for security and many patches have been merged already.</p> |
| </li> |
| <li> |
| <p>David Alves has continued the work on <a href="https://s.apache.org/7VCo">consistency</a>. Up for review |
| and partially pushed is a patch series to address row history loss if a row is deleted and then |
| re-inserted. Also in progress is work to make sure that scans at a snapshot from followers |
| always return same data as if they were executed on the leader. This helps with Read-Your-Writes |
| when reading from lagging replicas.</p> |
| </li> |
| <li> |
| <p>Adar Dembo has been making good progress <a href="https://s.apache.org/uOOt">addressing issues seen with the LogBlockManager</a>. |
| A series of patches have been merged with various fixes to block managers in general and to the |
| log block manager in particular.</p> |
| </li> |
| <li> |
| <p>Dinesh Bhat has been working on improving the manual recovery tools for Kudu. Namely, he has |
| added a tool to force a remote replica copy to a destination server, and a tool to delete a |
| local replica of a tablet. The latter is useful when a tablet cannot come up due to bad state.</p> |
| </li> |
| <li> |
| <p>Jean-Daniel Cryans has implemented RPC tracing for the java client, greatly improving |
| debuggability. JD also has added ReplicaSelection to the java client, allowing to perform |
| scans on replicas other than the leader, which should be of great help for load-balancing.</p> |
| </li> |
| <li> |
| <p>Besides the feature parity contributions, Jordan Birdsell has laid out a |
| <a href="http://mail-archives.apache.org/mod_mbox/kudu-dev/201611.mbox/%3CCAGaaj_VKfB4mhu6eExHCWo0%3D6Qd0HFWy7bg9e39JgOaFPGJ1nQ%40mail.gmail.com%3E">roadmap for Python client work</a> |
| for the 1.2 release. Feedback from other Python client users is certainly appreciated.</p> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| |
| <p>Want to learn more about a specific topic from this blog post? Shoot an email to the |
| <a href="mailto:user@kudu.apache.org">kudu-user mailing list</a> or |
| tweet 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> |
| |
| </div> |
| </article> |
| |
| |
| </div> |
| <div class="col-lg-3 recent-posts"> |
| <h3>Recent posts</h3> |
| <ul> |
| |
| <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> |
| |
| <li> <a href="/2018/12/11/call-for-posts.html">Call for Posts</a> </li> |
| |
| <li> <a href="/2018/10/26/apache-kudu-1-8-0-released.html">Apache Kudu 1.8.0 Released</a> </li> |
| |
| <li> <a href="/2018/09/26/index-skip-scan-optimization-in-kudu.html">Index Skip Scan Optimization in Kudu</a> </li> |
| |
| </ul> |
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