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From Arun C Murthy <...@hortonworks.com>
Subject [ANNOUNCE] Apache Hadoop 2.4.0 released!
Date Thu, 10 Apr 2014 13:34:54 GMT

It gives me great pleasure to announce that the Apache Hadoop community has voted to release
Apache Hadoop 2.4.0.

hadoop-2.4.0 is the second release for the year 2014, and brings a number of enhancements
to the core platform, both HDFS & YARN:
	• Support for Access Control Lists in HDFS
	• Support for Rolling Upgrades of HDFS
	• Switch to protocol-buffers for HDFS FSImage for smooth operational upgrades
	• Complete HTTPS support in HDFS
	• Support for Automatic Failover of the YARN ResourceManager
	• Enhanced support for new applications on YARN with Application History Server and Application
Timeline Server
	• Support for strong SLAs in YARN CapacityScheduler via Preemption

Of course, a number of bug-fixes, enhancements etc. have also made it into hadoop-2.4.0; there-by
continuing to improve Apache Hadoop. Please see the release notes for more details.

Thanks to all those who contributed to the release!


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