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https://issues.apache.org/jira/browse/MAPREDUCE-5038?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13591050#comment-13591050
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Sandy Ryza commented on MAPREDUCE-5038:
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As some additional background, MAPREDUCE-1597, the original patch that added
isSplitable to CombineFileInputFormat, took splittable codecs into account.
The only place in any history I can find CombineFileInputFormat with an
isSplitable method, but without taking splittable codecs into account, is in
branch-1.
> 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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