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| <h1>Release 2.4.0 available</h1> |
| <!--- |
| 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 |
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| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| --> |
| <p>Apache Hadoop 2.4.0 contains a number of significant enhancements such |
| as:</p> |
| <ul> |
| <li>Support for Access Control Lists in HDFS</li> |
| <li>Native support for Rolling Upgrades in HDFS</li> |
| <li>Usage of protocol-buffers for HDFS FSImage for smooth operational |
| upgrades</li> |
| <li>Complete HTTPS support in HDFS</li> |
| <li>Support for Automatic Failover of the YARN ResourceManager</li> |
| <li>Enhanced support for new applications on YARN with Application |
| History Server and Application Timeline Server</li> |
| <li>Support for strong SLAs in YARN CapacityScheduler via Preemption</li> |
| </ul> |
| <p>Please see the <a href="https://hadoop.apache.org/docs/r2.4.0/hadoop-project-dist/hadoop-common/releasenotes.html">Hadoop 2.4.0 Release |
| Notes</a> |
| for details.</p> |
| |
| <small>2014 Apr 7 </small> |
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