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<h1>Releases</h1>
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<a href="#Download">Download</a>
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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>
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<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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<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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<a href="#4+September%2C+2007%3A+release+0.14.1+available"> 4 September, 2007: release 0.14.1 available </a>
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<a href="#25+July%2C+2007%3A+release+0.13.1+available">25 July, 2007: release 0.13.1 available</a>
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<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>
<p>
      
<a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/">
      <strong><strong>Download a release now!</strong></strong></a>
      
</p>
<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>
</div>

    
<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>
      
</p>
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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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