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From Darren Haas <dh...@apple.com>
Subject Re: Apache Hadoop 2.x is now GA with release of hadoop-2.2.0
Date Wed, 16 Oct 2013 06:08:28 GMT
Absolutely, congrats all.

-Darren


> On Oct 15, 2013, at 11:06 PM, Jagat Singh <jagatsingh@gmail.com> wrote:
> 
> Great news.
> 
> Many congratulations to all who are behind this work
>> On 16/10/2013 4:49 PM, "Arun C Murthy" <acm@hortonworks.com> wrote:
>> 
>> 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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