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From "Venkatesh Seetharam (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5014) Extending DistCp through a custom CopyListing is not possible
Date Wed, 20 Mar 2013 19:39:15 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13608066#comment-13608066
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Venkatesh Seetharam commented on MAPREDUCE-5014:
------------------------------------------------

bq. CopyListing class has a static factory method getCopyListing(). We should make the factory
method configuration based, sothat users can plugin the custom CopyListing without extending
the Tool itself.
[~amareshwari] Great suggestion but could be another jira since the scope of this jira is
enabling a simple extension point which can be enhanced further. Appreciate if you could review
and commit this. Thanks!
                
> Extending DistCp through a custom CopyListing is not possible
> -------------------------------------------------------------
>
>                 Key: MAPREDUCE-5014
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5014
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: distcp
>    Affects Versions: 0.23.0, 0.23.1, 0.23.3, trunk, 0.23.4, 0.23.5
>            Reporter: Srikanth Sundarrajan
>            Assignee: Srikanth Sundarrajan
>         Attachments: MAPREDUCE-5014.patch
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> * While it is possible to implement a custom CopyListing in DistCp, DistCp driver class
doesn't allow for using this custom CopyListing.
> * Allow SimpleCopyListing to provide an option to exclude files (For instance it is useful
to exclude FileOutputCommiter.SUCCEEDED_FILE_NAME during copy as premature copy can indicate
that the entire data is available at the destination)

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