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| <h1>Releases</h1> |
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| <li> |
| <a href="#26+November%2C+2007%3A+release+0.14.4+available">26 November, 2007: release 0.14.4 available </a> |
| </li> |
| <li> |
| <a href="#19+October%2C+2007%3A+release+0.14.3+available">19 October, 2007: release 0.14.3 available </a> |
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| <li> |
| <a href="#9+October%2C+2007%3A+release+0.14.2+available"> 9 October, 2007: release 0.14.2 available </a> |
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| <li> |
| <a href="#4+September%2C+2007%3A+release+0.14.1+available"> 4 September, 2007: release 0.14.1 available </a> |
| </li> |
| <li> |
| <a href="#25+July%2C+2007%3A+release+0.13.1+available">25 July, 2007: release 0.13.1 available</a> |
| </li> |
| <li> |
| <a href="#8+June%2C+2006%3A"> 8 June, 2006: FAQ added to Wiki </a> |
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| |
| <p>This page lists release numbers along with their dates and a |
| link to release notes. You can obtain releases from a nearby |
| mirror.</p> |
| |
| |
| <a name="N1000F"></a><a name="Download"></a> |
| <h2 class="h3">Download</h2> |
| <div class="section"> |
| <p>Releases may be downloaded from Apache mirrors.</p> |
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| |
| <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> |
| <strong><strong>Download a release now!</strong></strong></a> |
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| <p>On the mirror, all recent releases are available, but are not |
| guaranteed to be stable. For stable releases, look in the stable |
| directory. |
| </p> |
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| |
| |
| <a name="N10026"></a><a name="Release+Notes"></a> |
| <h2 class="h3">Release Notes</h2> |
| <div class="section"> |
| <p>Release notes for Hadoop releases are available in Jira.</p> |
| <p> |
| |
| <a href="http://issues.apache.org/jira/browse/HADOOP?report=com.atlassian.jira.plugin.system.project:changelog-panel"> |
| <strong><strong>Browse release notes now!</strong></strong></a> |
| |
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| |
| |
| <a name="N1003A"></a><a name="Project+News"></a> |
| <h2 class="h3">Project News</h2> |
| <div class="section"> |
| <a name="N10040"></a><a name="26+November%2C+2007%3A+release+0.14.4+available"></a> |
| <h3 class="h4">26 November, 2007: release 0.14.4 available </h3> |
| <p>This release fixes critical bugs in release 0.14.3.</p> |
| <a name="N1004A"></a><a name="19+October%2C+2007%3A+release+0.14.3+available"></a> |
| <h3 class="h4">19 October, 2007: release 0.14.3 available </h3> |
| <p>This release fixes critical bugs in release 0.14.2.</p> |
| <a name="N10054"></a><a name="9+October%2C+2007%3A+release+0.14.2+available"></a> |
| <h3 class="h4"> 9 October, 2007: release 0.14.2 available </h3> |
| <p>This release fixes critical bugs in release 0.14.1.</p> |
| <a name="N1005E"></a><a name="4+September%2C+2007%3A+release+0.14.1+available"></a> |
| <h3 class="h4"> 4 September, 2007: release 0.14.1 available </h3> |
| <p>New features in release 0.14 include:</p> |
| <ul> |
| |
| <li>Better checksums in HDFS. Checksums are no longer |
| stored in parallel HDFS files, but are stored directly by |
| datanodes alongside blocks. This is more efficient for the |
| namenode and also improves data integrity.</li> |
| |
| |
| <li>Pipes: A C++ API for MapReduce</li> |
| |
| |
| <li>Eclipse Plugin, including HDFS browsing, job |
| monitoring, etc.</li> |
| |
| |
| <li>File modification times in HDFS.</li> |
| |
| </ul> |
| <p>There are many other improvements, bug fixes, optimizations |
| and new features. Performance and reliability are better than |
| ever.</p> |
| <div class="note"> |
| <div class="label">Note</div> |
| <div class="content">When upgrading an existing HDFS filesystem to a 0.14.x |
| release from a 0.13.x or earlier release, you should first |
| start HDFS with 'bin/start-dfs.sh -upgrade'. See the <a href="http://wiki.apache.org/lucene-hadoop/Hadoop_0.14_Upgrade">Hadoop |
| 0.14 Upgrade</a> page for details.</div> |
| </div> |
| <a name="N10081"></a><a name="25+July%2C+2007%3A+release+0.13.1+available"></a> |
| <h3 class="h4">25 July, 2007: release 0.13.1 available</h3> |
| <p> |
| In addition to new features, release 0.13 contains significant |
| performance and reliability improvements. For example, |
| MapReduce sort performance on large clusters has <a href="http://wiki.apache.org/lucene-hadoop-data/attachments/FAQ/attachments/sort900-20070607.png">doubled</a>. |
| </p> |
| <div class="note"> |
| <div class="label">Note</div> |
| <div class="content"> |
| When upgrading an existing <acronym title="Hadoop Distributed File System">HDFS</acronym> filesystem to this release, you |
| should first start HDFS with <span class="codefrag">bin/start-dfs.sh |
| -upgrade</span>. See the <a href="http://wiki.apache.org/lucene-hadoop/Hadoop_Upgrade">Hadoop |
| Upgrade</a> page for details. </div> |
| </div> |
| <a name="N1009D"></a><a name="8+June%2C+2006%3A"></a> |
| <h3 class="h4"> 8 June, 2006: FAQ added to Wiki </h3> |
| <p> |
| Hadoop now has a <a href="http://wiki.apache.org/lucene-hadoop/FAQ">FAQ</a>. Please help make this more complete! |
| </p> |
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