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From "Sangjin Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5038) old API CombineFileInputFormat missing fixes that are in new API
Date Tue, 05 Mar 2013 22:26:13 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5038?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13594002#comment-13594002
] 

Sangjin Lee commented on MAPREDUCE-5038:
----------------------------------------

I filed MAPREDUCE-5046 to backport MAPREDUCE-1423, then found this.

I took a look at the patch here, but I'm not sure if it subsumes the changes contained in
MAPREDUCE-1423. Specifically, rackToNodes seems still static, which is a thread-safety problem.
Could you absorb the fix that's in MAPREDUCE-1423? I'd be happy to look at that if you want.
                
> old API CombineFileInputFormat missing fixes that are in new API 
> -----------------------------------------------------------------
>
>                 Key: MAPREDUCE-5038
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5038
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 1.1.1
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>         Attachments: MAPREDUCE-5038.patch
>
>
> The following changes patched the CombineFileInputFormat in mapreduce, but neglected
the one in mapred
> MAPREDUCE-1597 enabled the CombineFileInputFormat to work on splittable files
> MAPREDUCE-2021 solved returning duplicate hostnames in split locations
> MAPREDUCE-1806 CombineFileInputFormat does not work with paths not on default FS
> In trunk this is not an issue as the one in mapred extends the one in mapreduce.

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