apache
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hadoop
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<h1>Welcome to Hadoop!</h1>
<div id="minitoc-area">
<ul class="minitoc">
<li>
<a href="#News">News</a>
<ul class="minitoc">
<li>
<a href="#8+June%2C+2007%3A+release+0.13.0+available">8 June, 2007: release 0.13.0 available</a>
</li>
<li>
<a href="#6+April%2C+2007%3A+release+0.12.3+available">6 April, 2007: release 0.12.3 available</a>
</li>
<li>
<a href="#23+March%2C+2007%3A+release+0.12.2+available">23 March, 2007: release 0.12.2 available</a>
</li>
<li>
<a href="#17+March%2C+2007%3A+release+0.12.1+available">17 March, 2007: release 0.12.1 available</a>
</li>
<li>
<a href="#2+March%2C+2007%3A+release+0.12.0+available">2 March, 2007: release 0.12.0 available</a>
</li>
<li>
<a href="#16+February%2C+2007%3A+release+0.11.2+available">16 February, 2007: release 0.11.2 available</a>
</li>
<li>
<a href="#9+February%2C+2007%3A+release+0.11.1+available">9 February, 2007: release 0.11.1 available</a>
</li>
<li>
<a href="#2+February%2C+2007%3A+release+0.11.0+available">2 February, 2007: release 0.11.0 available</a>
</li>
<li>
<a href="#10+January%2C+2007%3A+release+0.10.1+available">10 January, 2007: release 0.10.1 available</a>
</li>
<li>
<a href="#5+January%2C+2007%3A+release+0.10.0+available">5 January, 2007: release 0.10.0 available</a>
</li>
<li>
<a href="#15+December%2C+2006%3A+release+0.9.2+available">15 December, 2006: release 0.9.2 available</a>
</li>
<li>
<a href="#6+December%2C+2006%3A+release+0.9.1+available">6 December, 2006: release 0.9.1 available</a>
</li>
<li>
<a href="#1+December%2C+2006%3A+release+0.9.0+available">1 December, 2006: release 0.9.0 available</a>
</li>
<li>
<a href="#3+November%2C+2006%3A+release+0.8.0+available">3 November, 2006: release 0.8.0 available</a>
</li>
<li>
<a href="#18+October%2C+2006%3A+release+0.7.2+available">18 October, 2006: release 0.7.2 available</a>
</li>
<li>
<a href="#11+October%2C+2006%3A+release+0.7.1+available">11 October, 2006: release 0.7.1 available</a>
</li>
<li>
<a href="#6+October%2C+2006%3A+release+0.7.0+available">6 October, 2006: release 0.7.0 available</a>
</li>
<li>
<a href="#18+September%2C+2006%3A+release+0.6.2+available">18 September, 2006: release 0.6.2 available</a>
</li>
<li>
<a href="#13+September%2C+2006%3A+release+0.6.1+available">13 September, 2006: release 0.6.1 available</a>
</li>
<li>
<a href="#8+September%2C+2006%3A+release+0.6.0+available">8 September, 2006: release 0.6.0 available</a>
</li>
<li>
<a href="#4+August%2C+2006%3A+release+0.5.0+available">4 August, 2006: release 0.5.0 available</a>
</li>
<li>
<a href="#28+June%2C+2006%3A+release+0.4.0+available">28 June, 2006: release 0.4.0 available</a>
</li>
<li>
<a href="#9+June%2C+2006%3A+release+0.3.2+available">9 June, 2006: release 0.3.2 available</a>
</li>
<li>
<a href="#8+June%2C+2006%3A+FAQ+added+to+Wiki">8 June, 2006: FAQ added to Wiki</a>
</li>
<li>
<a href="#5+June%2C+2006%3A+release+0.3.1+available">5 June, 2006: release 0.3.1 available</a>
</li>
<li>
<a href="#2+June%2C+2006%3A+release+0.3.0+available">2 June, 2006: release 0.3.0 available</a>
</li>
<li>
<a href="#12+May%2C+2006%3A+release+0.2.1+available">12 May, 2006: release 0.2.1 available</a>
</li>
<li>
<a href="#5+May%2C+2006%3A+release+0.2.0+available">5 May, 2006: release 0.2.0 available</a>
</li>
<li>
<a href="#2+April%2C+2006%3A+release+0.1.0+available">2 April, 2006: release 0.1.0 available</a>
</li>
<li>
<a href="#6+February%2C+2006%3A+nightly+builds">6 February, 2006: nightly builds</a>
</li>
<li>
<a href="#3+February%2C+2006%3A+Hadoop+code+moved+out+of+Nutch">3 February, 2006: Hadoop code moved out of Nutch</a>
</li>
<li>
<a href="#30+March%2C+2006%3A+Hadoop+project+approved">30 March, 2006: Hadoop project approved</a>
</li>
</ul>
</li>
</ul>
</div> 

    
<a name="N1000C"></a><a name="News"></a>
<h2 class="h3">News</h2>
<div class="section">
<a name="N10012"></a><a name="8+June%2C+2007%3A+release+0.13.0+available"></a>
<h3 class="h4">8 June, 2007: release 0.13.0 available</h3>
<p>For details see the <a href="http://tinyurl.com/2prl3k">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N10024"></a><a name="6+April%2C+2007%3A+release+0.12.3+available"></a>
<h3 class="h4">6 April, 2007: release 0.12.3 available</h3>
<p>For details see the <a href="http://tinyurl.com/35qyhw">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N10036"></a><a name="23+March%2C+2007%3A+release+0.12.2+available"></a>
<h3 class="h4">23 March, 2007: release 0.12.2 available</h3>
<p>For details see the <a href="http://tinyurl.com/2r7kcw">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N10048"></a><a name="17+March%2C+2007%3A+release+0.12.1+available"></a>
<h3 class="h4">17 March, 2007: release 0.12.1 available</h3>
<p>For details see the <a href="http://tinyurl.com/2kynuc">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N1005A"></a><a name="2+March%2C+2007%3A+release+0.12.0+available"></a>
<h3 class="h4">2 March, 2007: release 0.12.0 available</h3>
<p>For details see the <a href="http://tinyurl.com/2vp248">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N1006C"></a><a name="16+February%2C+2007%3A+release+0.11.2+available"></a>
<h3 class="h4">16 February, 2007: release 0.11.2 available</h3>
<p>This fixes critical bugs in 0.11.1. For details see the <a href="http://tinyurl.com/2ukkt3">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N1007E"></a><a name="9+February%2C+2007%3A+release+0.11.1+available"></a>
<h3 class="h4">9 February, 2007: release 0.11.1 available</h3>
<p>This fixes bugs in 0.11.0. For details see the <a href="http://tinyurl.com/37c5a3">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N10090"></a><a name="2+February%2C+2007%3A+release+0.11.0+available"></a>
<h3 class="h4">2 February, 2007: release 0.11.0 available</h3>
<p>For details see the <a href="http://tinyurl.com/2yn8zs">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N100A2"></a><a name="10+January%2C+2007%3A+release+0.10.1+available"></a>
<h3 class="h4">10 January, 2007: release 0.10.1 available</h3>
<p>This fixes critical bugs in 0.10.0.  For details see the <a href="http://tinyurl.com/ycpsms">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N100B4"></a><a name="5+January%2C+2007%3A+release+0.10.0+available"></a>
<h3 class="h4">5 January, 2007: release 0.10.0 available</h3>
<p>For details see the <a href="http://tinyurl.com/yapkxs">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N100C6"></a><a name="15+December%2C+2006%3A+release+0.9.2+available"></a>
<h3 class="h4">15 December, 2006: release 0.9.2 available</h3>
<p>This fixes critical bugs in 0.9.1.  For details see the <a href="http://tinyurl.com/ya8lfd">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N100D8"></a><a name="6+December%2C+2006%3A+release+0.9.1+available"></a>
<h3 class="h4">6 December, 2006: release 0.9.1 available</h3>
<p>This fixes critical bugs in 0.9.0.  For details see the <a href="http://tinyurl.com/y55d7p">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N100EA"></a><a name="1+December%2C+2006%3A+release+0.9.0+available"></a>
<h3 class="h4">1 December, 2006: release 0.9.0 available</h3>
<p>For details see the <a href="http://tinyurl.com/sdjhb">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N100FC"></a><a name="3+November%2C+2006%3A+release+0.8.0+available"></a>
<h3 class="h4">3 November, 2006: release 0.8.0 available</h3>
<p>For details see the <a href="http://tinyurl.com/ykqv6s">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N1010E"></a><a name="18+October%2C+2006%3A+release+0.7.2+available"></a>
<h3 class="h4">18 October, 2006: release 0.7.2 available</h3>
<p>This fixes critical bugs in 0.7.1.  For details see the <a href="http://tinyurl.com/ygy6y7">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N10120"></a><a name="11+October%2C+2006%3A+release+0.7.1+available"></a>
<h3 class="h4">11 October, 2006: release 0.7.1 available</h3>
<p>This fixes critical bugs in 0.7.0.  For details see the <a href="http://tinyurl.com/p7qod">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N10132"></a><a name="6+October%2C+2006%3A+release+0.7.0+available"></a>
<h3 class="h4">6 October, 2006: release 0.7.0 available</h3>
<p>For details see the <a href="http://tinyurl.com/kvd9m">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N10144"></a><a name="18+September%2C+2006%3A+release+0.6.2+available"></a>
<h3 class="h4">18 September, 2006: release 0.6.2 available</h3>
<p>This fixes critical bugs in 0.6.1.  For details see the <a href="http://tinyurl.com/gyb56">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N10156"></a><a name="13+September%2C+2006%3A+release+0.6.1+available"></a>
<h3 class="h4">13 September, 2006: release 0.6.1 available</h3>
<p>This fixes critical bugs in 0.6.0.  For details see the <a href="http://tinyurl.com/lykp4">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N10168"></a><a name="8+September%2C+2006%3A+release+0.6.0+available"></a>
<h3 class="h4">8 September, 2006: release 0.6.0 available</h3>
<p>For details see the <a href="http://tinyurl.com/r3zoj">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N1017A"></a><a name="4+August%2C+2006%3A+release+0.5.0+available"></a>
<h3 class="h4">4 August, 2006: release 0.5.0 available</h3>
<p>For details see the <a href="http://tinyurl.com/pnml2">release notes</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N1018C"></a><a name="28+June%2C+2006%3A+release+0.4.0+available"></a>
<h3 class="h4">28 June, 2006: release 0.4.0 available</h3>
<p>For details see the <a href="http://tinyurl.com/o35b6">change log</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N1019E"></a><a name="9+June%2C+2006%3A+release+0.3.2+available"></a>
<h3 class="h4">9 June, 2006: release 0.3.2 available</h3>
<p>This is a bugfix release.  For details see the <a href="http://tinyurl.com/k9g5c">change log</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N101B0"></a><a name="8+June%2C+2006%3A+FAQ+added+to+Wiki"></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>
<a name="N101BE"></a><a name="5+June%2C+2006%3A+release+0.3.1+available"></a>
<h3 class="h4">5 June, 2006: release 0.3.1 available</h3>
<p>This is a bugfix release.  For details see the <a href="http://tinyurl.com/l6on4">change log</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N101D0"></a><a name="2+June%2C+2006%3A+release+0.3.0+available"></a>
<h3 class="h4">2 June, 2006: release 0.3.0 available</h3>
<p>This includes many fixes, improving performance, scalability
      and reliability and adding new features.  For details see the <a href="http://tinyurl.com/rq3f7">change log</a>. The release can
      be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N101E2"></a><a name="12+May%2C+2006%3A+release+0.2.1+available"></a>
<h3 class="h4">12 May, 2006: release 0.2.1 available</h3>
<p>This fixes a few bugs in release 0.2.0, listed in the <a href="http://tinyurl.com/rnnvz">change log</a>. The
      release can be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N101F4"></a><a name="5+May%2C+2006%3A+release+0.2.0+available"></a>
<h3 class="h4">5 May, 2006: release 0.2.0 available</h3>
<p>We are now aiming for monthly releases.  There have been many
      bug fixes and improvements in the past month.  MapReduce and DFS
      are now fairly reliable on clusters with up to 200 nodes.  See
      the <a href="http://tinyurl.com/qkgsg">change log</a> for
      details. The release can be obtained from <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/"> a
      nearby mirror</a>.
      </p>
<a name="N10206"></a><a name="2+April%2C+2006%3A+release+0.1.0+available"></a>
<h3 class="h4">2 April, 2006: release 0.1.0 available</h3>
<p>This is the first Hadoop release.  The release is available
      <a href="http://www.apache.org/dyn/closer.cgi/lucene/hadoop/">
      here</a>.</p>
<a name="N10214"></a><a name="6+February%2C+2006%3A+nightly+builds"></a>
<h3 class="h4">6 February, 2006: nightly builds</h3>
<p>Hadoop now has nightly builds.  This automatically creates a
      <a href="http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Nightly/">downloadable version of Hadoop every
      night</a>.  All unit tests must pass, or a message is sent to
      the developers mailing list and no new version is created.  This
      also updates the <a href="api/index.html">javadoc</a>.</p>
<a name="N10226"></a><a name="3+February%2C+2006%3A+Hadoop+code+moved+out+of+Nutch"></a>
<h3 class="h4">3 February, 2006: Hadoop code moved out of Nutch</h3>
<p>The Hadoop code has now been moved into its own Subversion
      tree, renamed into packages under <span class="codefrag">org.apache.hadoop</span>.
      All unit tests pass, but little else has yet been tested.</p>
<a name="N10233"></a><a name="30+March%2C+2006%3A+Hadoop+project+approved"></a>
<h3 class="h4">30 March, 2006: Hadoop project approved</h3>
<p>The Lucene PMC has elected to split the Nutch MapReduce and
      distributed filesytem code into a new project named Hadoop.</p>
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