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| <h1 class="entry-title">Apache Kudu 1.6.0 released</h1> |
| <p class="meta">Posted 08 Dec 2017 by Mike Percy</p> |
| </header> |
| <div class="entry-content"> |
| <p>The Apache Kudu team is happy to announce the release of Kudu 1.6.0!</p> |
| |
| <p>Apache Kudu 1.6.0 is a minor release that offers new features, performance |
| optimizations, incremental improvements, and bug fixes.</p> |
| |
| <p>Release highlights:</p> |
| |
| <!--more--> |
| |
| <ol> |
| <li>Kudu servers can now tolerate short interruptions in NTP clock |
| synchronization. NTP synchronization is still required when any Kudu daemon |
| starts up.</li> |
| <li>Tablet servers will no longer crash when a disk containing data blocks |
| fails, unless that disk also stores WAL segments or tablet metadata. Instead |
| of crashing, the tablet server will shut down any tablets that may have lost |
| data locally and Kudu will re-replicate the affected tablets to another |
| tablet server. More information can be found in the documentation under |
| <a href="/releases/1.6.0/docs/administration.html#disk_failure_recovery">Recovering from Disk Failure</a>.</li> |
| <li>Tablet server startup time has been improved significantly on servers |
| containing large numbers of blocks.</li> |
| <li>The Spark DataSource integration now can take advantage of scan locality for |
| better scan performance. The scan will take place at the closest replica |
| instead of going to the leader.</li> |
| <li>Support for Spark 1 has been removed in Kudu 1.6.0 and now only Spark 2 is |
| supported. Spark 1 support was deprecated in Kudu 1.5.0.</li> |
| <li>HybridTime timestamp propagation now works in the Java client when using |
| scan tokens.</li> |
| <li>Tablet servers now consider the health of all replicas of a tablet before |
| deciding to evict one. This can improve the stability of the Kudu cluster |
| when multiple servers temporarily go down at the same time.</li> |
| <li>A bug in the C++ client was fixed that could cause tablets to be erroneously |
| pruned, or skipped, during certain scans, resulting in fewer results than |
| expected being returned from queries. The bug only affected tables whose |
| range partition columns are a proper prefix of the primary key. |
| See <a href="https://issues.apache.org/jira/browse/KUDU-2173">KUDU-2173</a> for more |
| information.</li> |
| </ol> |
| |
| <p>For more details, and the complete list of changes in Kudu 1.6.0, please see |
| the <a href="/releases/1.6.0/docs/release_notes.html">Kudu 1.6.0 release notes</a>.</p> |
| |
| <p>The Apache Kudu project only publishes source code releases. To build Kudu |
| 1.6.0, follow these steps:</p> |
| |
| <ol> |
| <li>Download the <a href="/releases/1.6.0/">Kudu 1.6.0 source release</a>.</li> |
| <li>Follow the instructions in the documentation to |
| <a href="/releases/1.6.0/docs/installation.html#build_from_source">build Kudu 1.6.0 from source</a>.</li> |
| </ol> |
| |
| <p>For your convenience, binary JAR files for the Kudu Java client library, Spark |
| DataSource, Flume sink, and other Java integrations are published to the ASF |
| Maven repository and are |
| <a href="https://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.apache.kudu%22%20AND%20v%3A%221.6.0%22">now available</a>.</p> |
| |
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| <div class="col-lg-3 recent-posts"> |
| <h3>Recent posts</h3> |
| <ul> |
| |
| <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> |
| |
| <li> <a href="/2018/09/11/simplified-pipelines-with-kudu.html">Simplified Data Pipelines with Kudu</a> </li> |
| |
| <li> <a href="/2018/08/06/getting-started-with-kudu-an-oreilly-title.html">Getting Started with Kudu - an O'Reilly Title</a> </li> |
| |
| <li> <a href="/2018/07/10/instrumentation-in-kudu.html">Instrumentation in Apache Kudu</a> </li> |
| |
| <li> <a href="/2018/03/23/apache-kudu-1-7-0-released.html">Apache Kudu 1.7.0 released</a> </li> |
| |
| <li> <a href="/2017/12/08/apache-kudu-1-6-0-released.html">Apache Kudu 1.6.0 released</a> </li> |
| |
| <li> <a href="/2017/10/23/nosql-kudu-spanner-slides.html">Slides: A brave new world in mutable big data: Relational storage</a> </li> |
| |
| <li> <a href="/2017/09/18/kudu-consistency-pt1.html">Consistency in Apache Kudu, Part 1</a> </li> |
| |
| <li> <a href="/2017/09/08/apache-kudu-1-5-0-released.html">Apache Kudu 1.5.0 released</a> </li> |
| |
| <li> <a href="/2017/06/13/apache-kudu-1-4-0-released.html">Apache Kudu 1.4.0 released</a> </li> |
| |
| <li> <a href="/2017/04/19/apache-kudu-1-3-1-released.html">Apache Kudu 1.3.1 released</a> </li> |
| |
| <li> <a href="/2017/03/20/apache-kudu-1-3-0-released.html">Apache Kudu 1.3.0 released</a> </li> |
| |
| </ul> |
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