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Posted to common-issues@hadoop.apache.org by "Adam Kramer (JIRA)" <ji...@apache.org> on 2017/06/06 00:12:12 UTC

[jira] [Commented] (HADOOP-13145) In DistCp, prevent unnecessary getFileStatus call when not preserving metadata.

    [ https://issues.apache.org/jira/browse/HADOOP-13145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16037880#comment-16037880 ] 

Adam Kramer commented on HADOOP-13145:
--------------------------------------

Any chance of creating a patch/applying to 2.7 branch?

> 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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