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https://issues.apache.org/jira/browse/HADOOP-11505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16191316#comment-16191316
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Anup Halarnkar commented on HADOOP-11505:
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Thanks for the response Steve.
I had already tried the latest "08" patch. But, it did not work for me.
I am not really sure about intricacies or dependencies involved for "bswap" as
the ver 08 patch is too big.
Honestly, I used only the GCC builtin macros (__builtin_bswap32(), etc. These
are already ported to output assembly code for power). And I made the
modification is just one file "primitives.h". Also, I made sure that other
architectures would not be disturbed with this change as I used PPC specific
arch macros.
So, I was trying to get more information from community about my patch ( Info
related to portability, dependencies, arch specific info, etc)
I am thankful for your response and will look to explore the ver 08 patch given
here as well as try to get results from other power specific communities.
Thanks,
Anup Halarnkar
> 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-alpha1
> Reporter: Colin P. McCabe
> Assignee: Alan Burlison
> 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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