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From "Amir Sanjar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11505) Various native parts use bswap incorrectly and unportably
Date Wed, 11 May 2016 22:02:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15280900#comment-15280900
] 

Amir Sanjar commented on HADOOP-11505:
--------------------------------------

Colin,
Thanks for your guidance and do-diligent  here. This might be of-topic, but to avoid similar
issues in future, could I offer my help here.
For example, we could contribute a Power based Jenkins slave(s) to Apache Hadoop CI.  We have
successfully done similar contribution to Apache Bigtop CI. That way we could catch any regressions
earlier in development cycle. I'd appreciate your guidance on this.

> Various native parts use bswap incorrectly and unportably
> ---------------------------------------------------------
>
>                 Key: HADOOP-11505
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11505
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 3.0.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Alan Burlison
>            Priority: Critical
>             Fix For: 3.0.0
>
>         Attachments: HADOOP-11505.001.patch, HADOOP-11505.003.patch, HADOOP-11505.004.patch,
HADOOP-11505.005.patch, HADOOP-11505.006.patch, HADOOP-11505.007.patch, HADOOP-11505.008.patch
>
>
> hadoop-mapreduce-client-nativetask fails to use x86 optimizations in some cases.  Also,
on some alternate, non-x86, non-ARM architectures the generated code is incorrect.  Thanks
to Steve Loughran and Edward Nevill for finding this.



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