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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13145) In DistCp, prevent unnecessary getFileStatus call when not preserving metadata.
Date Wed, 18 May 2016 19:45:13 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13145?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steve Loughran updated HADOOP-13145:
------------------------------------
    Status: Patch Available  (was: Open)

> 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
>         Attachments: HADOOP-13145.001.patch, HADOOP-13145.003.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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