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<h1 id="title">Releases Archive</h1>
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<h1><a href="/release/0.23.10.html">Release 0.23.10 available</a></h1>
<p><small>2013 Dec 11 </small></p>
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Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. See accompanying LICENSE file.
-->
<p>A point release for the 0.23.X line. Bug fixes to continue
stabilization.</p>
<p>Please see the <a href="https://hadoop.apache.org/docs/r0.23.10/hadoop-project-dist/hadoop-common/releasenotes.html">Hadoop 0.23.10 Release
Notes</a>
for details.</p>
<h1><a href="/release/2.2.0.html">Release 2.2.0 available</a></h1>
<p><small>2013 Oct 15 </small></p>
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Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. See accompanying LICENSE file.
-->
<p>Apache Hadoop 2.2.0 is the <strong>GA</strong> release of Apache Hadoop 2.x.</p>
<p>Users are encouraged to immediately move to 2.2.0 since this release is
significantly more stable and is guaranteed to remain compatible in
terms of both APIs and protocols.</p>
<p>To recap, this release has a number of significant highlights compared
to Hadoop 1.x:</p>
<ul>
<li>YARN - A general purpose resource management system for Hadoop to
allow MapReduce and other other data processing frameworks and
services</li>
<li>High Availability for HDFS</li>
<li>HDFS Federation</li>
<li>HDFS Snapshots</li>
<li>NFSv3 access to data in HDFS</li>
<li>Support for running Hadoop on Microsoft Windows</li>
<li>Binary Compatibility for MapReduce applications built on hadoop-1.x</li>
<li>Substantial amount of integration testing with rest of projects in
the ecosystem</li>
</ul>
<p>A couple of important points to note while upgrading to hadoop-2.2.0:</p>
<ul>
<li>HDFS - The HDFS community decided to push the symlinks feature out
to a future 2.3.0 release and is currently disabled.</li>
<li>YARN/MapReduce - Users need to change ShuffleHandler service name
from mapreduce.shuffle to mapreduce_shuffle.</li>
</ul>
<p>Please see the <a href="https://hadoop.apache.org/docs/r2.2.0/hadoop-project-dist/hadoop-common/releasenotes.html">Hadoop 2.2.0 Release
Notes</a>
for details.</p>
<h1><a href="/release/2.1.1-beta.html">Release 2.1.1-beta available</a></h1>
<p><small>2013 Sep 23 </small></p>
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Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. See accompanying LICENSE file.
-->
<p>Apache Hadoop 2.1.1-beta is a bug-fix version of the beta release of
Apache Hadoop 2.x.</p>
<p>Please see the <a href="https://hadoop.apache.org/docs/r2.1.1-beta/hadoop-project-dist/hadoop-common/releasenotes.html">Hadoop 2.1.1-beta Release
Notes</a>
for details.</p>
<h1><a href="/release/2.1.0-beta.html">Release 2.1.0-beta available</a></h1>
<p><small>2013 Aug 25 </small></p>
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Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. See accompanying LICENSE file.
-->
<p>Apache Hadoop 2.1.0-beta is the <strong>beta</strong> release of Apache Hadoop 2.x.</p>
<p>Users are encouraged to immediately move to 2.1.0-beta since this
release is significantly more stable and has completley whetted set of
APIs and wire-protocols for future compatibility.</p>
<p>In addition, this release has a number of other significant highlights:</p>
<ul>
<li>HDFS Snapshots</li>
<li>Support for running Hadoop on Microsoft Windows</li>
<li>YARN API stabilization</li>
<li>Binary Compatibility for MapReduce applications built on hadoop-1.x</li>
<li>Substantial amount of integration testing with rest of projects in
the ecosystem</li>
</ul>
<p>Please see the <a href="https://hadoop.apache.org/docs/r2.1.0-beta/hadoop-project-dist/hadoop-common/releasenotes.html">Hadoop 2.1.0-beta Release
Notes</a>
for details.</p>
<h1><a href="/release/2.0.6-alpha.html">Release 2.0.6-alpha available</a></h1>
<p><small>2013 Aug 23 </small></p>
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Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. See accompanying LICENSE file.
-->
<p>This release delivers a number of critical bug-fixes for hadoop-2.x
uncovered during integration testing of previous release.</p>
<p>Please see the <a href="https://hadoop.apache.org/docs/r2.0.6-alpha/hadoop-project-dist/hadoop-common/releasenotes.html">Hadoop 2.0.6-alpha Release
Notes</a>
for details.</p>
<h1><a href="/release/1.2.1.html">Release 1.2.1 (stable) available</a></h1>
<p><small>2013 Aug 1 </small></p>
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Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. See accompanying LICENSE file.
-->
<p>A point release for the 1.2 line. This release is now considered stable.</p>
<p>Please see the <a href="https://hadoop.apache.org/docs/r1.2.1/releasenotes.html">Hadoop 1.2.1 Release
Notes</a> for the
list of 18 bug fixes and patches since the previous release 1.2.0.</p>
<h1><a href="/release/0.23.9.html">Release 0.23.9 available</a></h1>
<p><small>2013 Jul 8 </small></p>
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Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. See accompanying LICENSE file.
-->
<p>A point release for the 0.23.X line. Bug fixes to continue
stabilization.</p>
<p>Please see the <a href="https://hadoop.apache.org/docs/r0.23.9/hadoop-project-dist/hadoop-common/releasenotes.html">Hadoop 0.23.9 Release
Notes</a>
for details.</p>
<h1><a href="/release/2.0.5-alpha.html">Release 2.0.5-alpha available</a></h1>
<p><small>2013 Jun 6 </small></p>
<!---
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. See accompanying LICENSE file.
-->
<p>This release delivers a number of critical bug-fixes for hadoop-2.x
uncovered during integration testing of previous release.</p>
<p>Please see the <a href="https://hadoop.apache.org/docs/r2.0.5-alpha/hadoop-project-dist/hadoop-common/releasenotes.html">Hadoop 2.0.5-alpha Release
Notes</a>
for details.</p>
<h1><a href="/release/0.23.8.html">Release 0.23.8 available</a></h1>
<p><small>2013 Jun 5 </small></p>
<!---
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. See accompanying LICENSE file.
-->
<p>A point release for the 0.23.X line. Bug fixes to continue
stabilization.</p>
<p>Please see the <a href="https://hadoop.apache.org/docs/r0.23.8/hadoop-project-dist/hadoop-common/releasenotes.html">Hadoop 0.23.8 Release
Notes</a>
for details.</p>
<h1><a href="/release/1.2.0.html">Release 1.2.0 available</a></h1>
<p><small>2013 May 13 </small></p>
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Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. See accompanying LICENSE file.
-->
<p>This is a beta release for version 1.2.</p>
<p>This release delivers over 200 enhancements and bug-fixes, compared to
the previous 1.1.2 release. Major enhancements include:</p>
<ul>
<li>DistCp v2 backported</li>
<li>Web services for JobTracker</li>
<li>WebHDFS enhancements</li>
<li>Extensions of task placement and replica placement policy interfaces</li>
<li>Offline Image Viewer backported</li>
<li>Namenode more robust in case of edit log corruption</li>
<li>Add NodeGroups level to NetworkTopology</li>
<li>Add &ldquo;unset&rdquo; to Configuration API</li>
</ul>
<p>Please see the <a href="https://hadoop.apache.org/docs/r1.2.0/releasenotes.html">Hadoop 1.2.0 Release
Notes</a> for more
details.</p>
</ul>
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