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From Daniel Templeton <dan...@cloudera.com>
Subject Re: [VOTE] Release Apache Hadoop 2.8.0 (RC3)
Date Fri, 17 Mar 2017 21:09:17 GMT
Thanks for the new RC, Junping.  I built from source and tried it out on 
a 2-node cluster with HA enabled.  I ran a pi job and some streaming 
jobs.  I tested that localization and failover work correctly, and I 
played a little with the YARN and HDFS web UIs.

I did encounter an old friend of mine, which is that if you submit a 
streaming job with input that is only 1 block, you will nonetheless get 
2 mappers that both process the same split. What's new this time is that 
the second mapper was consistently failing on certain input sizes.  I 
(re)verified that the issue also exists is 2.7.3, so it's not a 
regression.  I'm pretty sure it's been there since at least 2.6.0.  I 
filed MAPREDUCE-6864 for it.

Given that my issue was not a regression, I'm +1 on the RC.


On 3/17/17 2:18 AM, Junping Du wrote:
> Hi all,
>       With fix of HDFS-11431 get in, I've created a new release candidate (RC3) for Apache
Hadoop 2.8.0.
>       This is the next minor release to follow up 2.7.0 which has been released for more
than 1 year. It comprises 2,900+ fixes, improvements, and new features. Most of these commits
are released for the first time in branch-2.
>        More information about the 2.8.0 release plan can be found here: https://cwiki.apache.org/confluence/display/HADOOP/Hadoop+2.8+Release
>        New RC is available at: http://home.apache.org/~junping_du/hadoop-2.8.0-RC3
>        The RC tag in git is: release-2.8.0-RC3, and the latest commit id is: 91f2b7a13d1e97be65db92ddabc627cc29ac0009
>        The maven artifacts are available via repository.apache.org at: https://repository.apache.org/content/repositories/orgapachehadoop-1057
>        Please try the release and vote; the vote will run for the usual 5 days, ending
on 03/22/2017 PDT time.
> Thanks,
> Junping

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