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https://issues.apache.org/jira/browse/HADOOP-7110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12989131#comment-12989131
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Hudson commented on HADOOP-7110:
--------------------------------
Integrated in Hadoop-Common-trunk-Commit #492 (See
[https://hudson.apache.org/hudson/job/Hadoop-Common-trunk-Commit/492/])
> Implement chmod with JNI
> ------------------------
>
> Key: HADOOP-7110
> URL: https://issues.apache.org/jira/browse/HADOOP-7110
> Project: Hadoop Common
> Issue Type: Improvement
> Components: io, native
> Affects Versions: 0.22.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 0.22.0
>
> Attachments: hadoop-7110.txt
>
>
> MapReduce is currently using a race-prone workaround to approximate chmod()
> because forking chmod is too expensive. This race is causing build failures
> (and probably task failures too). We should implement chmod in the NativeIO
> library so we can have good performance (ie not fork) and still not be prone
> to races.
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