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| <h1 class="entry-title">Apache Kudu (incubating) Weekly Update July 11, 2016</h1> |
| <p class="meta">Posted 11 Jul 2016 by Jean-Daniel Cryans</p> |
| </header> |
| <div class="entry-content"> |
| <p>Welcome to the sixteenth edition of the Kudu Weekly Update. This weekly blog post |
| covers ongoing development and news in the Apache Kudu (incubating) project.</p> |
| |
| <!--more--> |
| |
| <h2 id="development-discussions-and-code-in-progress">Development discussions and code in progress</h2> |
| |
| <ul> |
| <li> |
| <p>Todd Lipcon <a href="https://gerrit.cloudera.org/#/c/3517/">changed the default</a> |
| bloom filter false positive (FP) ratio from 1% to 0.01%. The original value |
| wasn’t scientifically chosen, but testing with billions of rows on a 5 |
| node cluster showed a 2x insert throughput improvement at the cost of |
| some more disk space.</p> |
| </li> |
| <li> |
| <p>J-D Cryans has been fixing some recently introduced bugs in the Java client. |
| For example, see <a href="https://gerrit.cloudera.org/#/c/3541/">this patch</a> and |
| <a href="https://gerrit.cloudera.org/#/c/3586/">that one</a>. Testability is a major |
| concern right now in the Java client since triggering those issues requires |
| a lot of time and data.</p> |
| </li> |
| <li> |
| <p>Dan Burkert has been making progress on the non-convering range partitioned |
| tables front. The Java client <a href="https://gerrit.cloudera.org/#/c/3388/">now supports</a> |
| such tables and Dan is currently implementing new functionality to add and remove |
| tablets via simple APIs.</p> |
| </li> |
| <li> |
| <p>David Alves is also making a lot of progress on the replay cache, this new component |
| on the server-side which makes it possible for tablets to identify client write |
| operations and enable exactly-once semantics. The main patch is up for review |
| <a href="https://gerrit.cloudera.org/#/c/3449/">here</a>.</p> |
| </li> |
| <li> |
| <p>Adar Dembo is 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>. He just put |
| up for review patches that enable tablet servers to heartbeat to all masters. Part |
| one is <a href="https://gerrit.cloudera.org/#/c/3609/">available here</a>.</p> |
| </li> |
| <li> |
| <p>Misty prepared a document with J-D that contains instructions on how to release a |
| new Kudu version. It is <a href="https://gerrit.cloudera.org/#/c/3614/">up for review here</a> |
| if you are curious or want to learn more about this process.</p> |
| </li> |
| </ul> |
| |
| <h2 id="project-news">Project news</h2> |
| |
| <ul> |
| <li> |
| <p>The <a href="https://s.apache.org/l6Tw">vote</a> to graduate Kudu from the ASF’s Incubator passed! |
| The next step is for the ASF Board to vote on the resolution at their next meeting.</p> |
| </li> |
| <li> |
| <p>There’s <a href="http://mail-archives.apache.org/mod_mbox/incubator-kudu-dev/201607.mbox/%3CCAGpTDNesxH43C-Yt5fNwpEpAxfb2P62Xpdi8AqT8jfvjeqnu0w%40mail.gmail.com%3E">a discussion</a> |
| on the dev mailing list about having an intermediate release, called 0.10.0, before 1.0.0. |
| The current issue is that the version in the code is current “1.0.0-SNAPSHOT” which doesn’t |
| leave room for another other release, but the bigger issue is that code is still churning a |
| lot which doesn’t make for a stable 1.0 release.</p> |
| </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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