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From Arun C Murthy <...@hortonworks.com>
Subject Re: [DISCUSS] Spin out MR, HDFS and YARN as their own TLPs and disband Hadoop umbrella project
Date Mon, 03 Sep 2012 11:02:28 GMT

On Sep 1, 2012, at 6:32 AM, Andrew Purtell wrote:

> I'd imagine such a MR(v1) in Hadoop, if this happened, would concentrate on
> performance improvements, maybe such things as alternate shuffle plugins.
> Perhaps a HA JobTracker for parity with HDFS. 

Lots of this has already happened in branch-1, please look at:
# JT Availability: MAPREDUCE-3837, MAPREDUCE-4328, MAPREDUCE-4603 (WIP)
# Performance - backports of PureJavaCrc32 in spills (MAPREDUCE-782), fadvise backports (MAPREDUCE-3289)
and other several misc. fixes.


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