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https://issues.apache.org/jira/browse/MAPREDUCE-5069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13606070#comment-13606070
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Sangjin Lee commented on MAPREDUCE-5069:
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Hmm... The build is clean, and all the tests that I have added are green.
However, it seems that somehow more unit tests are run than before, many of
which are failing. Prior to the patch 210 unit tests run. After the patch, 464
unit tests run. I believe all the failing tests are contained in that
difference.
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3431/testReport/
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3432/testReport/
I'm unsure why this patch causes more tests to run? Is
hadoop-mapreduce-client-jobclient not the right place to put the unit tests for
combine file input format tests?
> add concrete common implementations of CombineFileInputFormat
> -------------------------------------------------------------
>
> Key: MAPREDUCE-5069
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5069
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv1, mrv2
> Affects Versions: 2.0.3-alpha
> Reporter: Sangjin Lee
> Priority: Minor
> Attachments: MAPREDUCE-5069-1.patch, MAPREDUCE-5069-2.patch,
> MAPREDUCE-5069.patch
>
>
> CombineFileInputFormat is abstract, and its specific equivalents to
> TextInputFormat, SequenceFileInputFormat, etc. are currently not in the
> hadoop code base.
> These sound like very common need wherever CombineFileInputFormat is used,
> and different folks would write the same code over and over to achieve the
> same goal. It sounds very natural for hadoop to provide at least the text and
> sequence file implementations of the CombineFileInputFormat class.
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