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https://issues.apache.org/jira/browse/HADOOP-13145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16038768#comment-16038768
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Steve Loughran commented on HADOOP-13145:
-----------------------------------------
we're generally pretty reluctant to put stuff into 2.7.x which isn't a fairly
significant bug fix, just because every change is at a risk of breaking
something, and we like 2.7.x to be stable. There's enough change in this patch
(poms, code, new tests) that it's got the potential to cause trouble
Hadoop 2.8.1 is/will be out in the next few days, could you work with that?
> In DistCp, prevent unnecessary getFileStatus call when not preserving
> metadata.
> -------------------------------------------------------------------------------
>
> Key: HADOOP-13145
> URL: https://issues.apache.org/jira/browse/HADOOP-13145
> Project: Hadoop Common
> Issue Type: Improvement
> Components: tools/distcp
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Fix For: 2.8.0, 3.0.0-alpha1
>
> Attachments: HADOOP-13145.001.patch, HADOOP-13145.003.patch,
> HADOOP-13145-branch-2.004.patch, HADOOP-13145-branch-2.8.004.patch
>
>
> After DistCp copies a file, it calls {{getFileStatus}} to get the
> {{FileStatus}} from the destination so that it can compare to the source and
> update metadata if necessary. If the DistCp command was run without the
> option to preserve metadata attributes, then this additional
> {{getFileStatus}} call is wasteful.
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