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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 Tue, 10 May 2016 23:30:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15279224#comment-15279224
] 

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

Hi all,
Colin, thanks for opening this Jira and also thanks to Steve Loughran and Edward Nevill for
finding it.
We in OpenPOWER community and IBM, as part of our Hadoop 3.0 development plan, have unexpectedly
come across this issue, build break due to the embedded x86 asm code :( 
Please, let me know if I can be of any assistance to you. Meanwhile we consider the latest
Hadoop source code for Power architecture broken :( 
btw, could Hadoop community uncommitted these new x86 only enhancements? 

> 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
>             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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