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https://issues.apache.org/jira/browse/HADOOP-4565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12670181#action_12670181
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dhruba borthakur commented on HADOOP-4565:
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[exec] +1 overall.
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[exec] +1 @author. The patch does not contain any @author tags.
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[exec] +1 tests included. The patch appears to include 3 new or
modified tests.
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[exec] +1 javadoc. The javadoc tool did not generate any warning
messages.
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[exec] +1 javac. The applied patch does not increase the total number
of javac compiler warnings.
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[exec] +1 findbugs. The patch does not introduce any new Findbugs
warnings.
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[exec] +1 Eclipse classpath. The patch retains Eclipse classpath
integrity.
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[exec] +1 release audit. The applied patch does not increase the
total number of release audit warnings.
> MultiFileInputSplit can use data locality information to create splits
> ----------------------------------------------------------------------
>
> Key: HADOOP-4565
> URL: https://issues.apache.org/jira/browse/HADOOP-4565
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Reporter: dhruba borthakur
> Assignee: dhruba borthakur
> Fix For: 0.20.0, 0.21.0
>
> Attachments: CombineMultiFile.patch, CombineMultiFile2.patch,
> CombineMultiFile3.patch, CombineMultiFile4.patch, CombineMultiFile5.patch,
> CombineMultiFile7.patch, CombineMultiFile8.patch, CombineMultiFile9.patch,
> TestCombine.txt
>
>
> The MultiFileInputFormat takes a set of paths and creates splits based on
> file sizes. Each splits contains a few files an each split are roughly equal
> in size. It would be efficient if we can extend this InputFormat to create
> splits such each all the blocks in one split and either node-local or
> rack-local.
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