A new era! Cheers!
----- Original Message -----
From: "Arun C Murthy" <[email protected]>
To: [email protected]
Sent: Tuesday, October 15, 2013 10:49:14 PM
Subject: Apache Hadoop 2.x is now GA with release of hadoop-2.2.0
All,
I'm very happy announce that the Apache Hadoop community has released
hadoop-2.2.0, the *GA* release of Apache Hadoop 2.x!
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.
To recap, this release has a number of significant highlights compared to
Hadoop 1.x:
• YARN - A general purpose resource management system for Hadoop to
allow MapReduce and other other data processing frameworks and services
• High Availability for HDFS
• HDFS Federation
• HDFS Snapshots
• NFSv3 access to data in HDFS
• Support for running Hadoop on Microsoft Windows
• Binary Compatibility for MapReduce applications built on hadoop-1.x
• Substantial amount of integration testing with rest of projects in
the ecosystem
Please see the Hadoop 2.2.0 Release Notes for details.
Congratulations to the entire community, this is a big deal!
thanks,
Arun
P.S.: A couple of important points to note while upgrading to hadoop-2.2.0:
• HDFS - The HDFS community decided to push the symlinks feature out to a
future 2.3.0 release and is currently disabled.
• YARN/MapReduce - Users need to change ShuffleHandler service name from
mapreduce.shuffle to mapreduce_shuffle.
--
Arun C. Murthy
Hortonworks Inc.
http://hortonworks.com/
--
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