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| <h1 class="entry-title">Apache Kudu (incubating) Weekly Update July 18, 2016</h1> |
| <p class="meta">Posted 18 Jul 2016 by Todd Lipcon</p> |
| </header> |
| <div class="entry-content"> |
| <p>Welcome to the seventeenth edition of the Kudu Weekly Update. This weekly blog post |
| covers ongoing development and news in the Apache Kudu (incubating) project.</p> |
| |
| <!--more--> |
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| <h2 id="development-discussions-and-code-in-progress">Development discussions and code in progress</h2> |
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| <ul> |
| <li> |
| <p>Dan Burkert has continued making progress on support for non-covering range partitioned |
| tables. This past week, he posted a code review for |
| <a href="https://gerrit.cloudera.org/#/c/3648/">adding and dropping range partitions to the master</a> |
| and another for <a href="https://gerrit.cloudera.org/#/c/3581/">handling non-covering ranges in the C++ client</a>.</p> |
| </li> |
| <li> |
| <p>Adar Dembo continued working on addressing multi-master issues, as he explained in this |
| <a href="http://kudu.apache.org/2016/06/24/multi-master-1-0-0.html">blog post</a>. This past week |
| he worked on <a href="https://gerrit.cloudera.org/#/c/3550/">tackling various race conditions</a> |
| that were possible when master operations were submitted concurrent with a master leader election.</p> |
| |
| <p>Adar also posted patches for most of the remaining known server-side issues, including |
| posting a comprehensive <a href="https://gerrit.cloudera.org/#/c/3611/">stress test</a> which issues |
| client DDL operations concurrent with triggering master crashes and associated failovers.</p> |
| |
| <p>As always, Adar’s commit messages are instructive and fun reads for those interested in |
| following along.</p> |
| </li> |
| <li>As mentioned last week, David Alves has been making a lot of progress on the implementation |
| of the replay cache. Many patches landed in master this week, including: |
| <ul> |
| <li><a href="https://gerrit.cloudera.org/#/c/3192/">RPC system integration</a></li> |
| <li><a href="https://gerrit.cloudera.org/#/c/3449/">Integration with replicated writes</a></li> |
| <li><a href="https://gerrit.cloudera.org/#/c/3519/">Correctness/stress tests</a></li> |
| </ul> |
| |
| <p>Currently, this new feature is disabled by default, as the support for evicting elements |
| from the cache is not yet complete. This last missing feature is now |
| <a href="https://gerrit.cloudera.org/#/c/3628/">up for review</a>.</p> |
| </li> |
| <li>Alexey Serbin has been working on adding Doxygen-based documentation for the public |
| C++ API. This was originally <a href="https://mail-archives.apache.org/mod_mbox/incubator-kudu-dev/201606.mbox/%3CCANbMB4wtMz=JKwgKMNPvkjWX3t9NxCeGt04NmL=SyESyzUMWJg@mail.gmail.com%3E">proposed on the mailing list</a> |
| a couple of weeks ago, and last week, Alexey posted the |
| <a href="https://gerrit.cloudera.org/#/c/3619/">initial draft of the implementation</a>.</li> |
| </ul> |
| |
| <h2 id="project-news">Project news</h2> |
| |
| <ul> |
| <li>The <a href="http://mail-archives.apache.org/mod_mbox/incubator-kudu-dev/201607.mbox/%3CCAGpTDNesxH43C-Yt5fNwpEpAxfb2P62Xpdi8AqT8jfvjeqnu0w%40mail.gmail.com%3E">discussion</a> |
| on the dev mailing list about having an intermediate release, called 0.10.0, before 1.0.0, |
| has wound down. The consensus seems to be that the development team is in favor of this |
| release. Accordingly, the version number in the master branch has been changed back to |
| 0.10.0-SNAPSHOT.</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.incubator.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="/2016/07/18/weekly-update.html">Apache Kudu (incubating) Weekly Update July 18, 2016</a> </li> |
| |
| <li> <a href="/2016/07/11/weekly-update.html">Apache Kudu (incubating) Weekly Update July 11, 2016</a> </li> |
| |
| <li> <a href="/2016/07/01/apache-kudu-0-9-1-released.html">Apache Kudu (incubating) 0.9.1 released</a> </li> |
| |
| <li> <a href="/2016/06/27/weekly-update.html">Apache Kudu (incubating) Weekly Update June 27, 2016</a> </li> |
| |
| <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> |
| |
| </ul> |
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