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https://issues.apache.org/jira/browse/MAPREDUCE-5448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14374800#comment-14374800
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Harsh J commented on MAPREDUCE-5448:
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Ah, didn't realise junit.Assert import could cause this. Adding an addendum
patch to resolve the import and fall back to using fail(…) from the TestCase
inherited method.
> MapFileOutputFormat#getReaders bug with invisible files/folders
> ---------------------------------------------------------------
>
> Key: MAPREDUCE-5448
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5448
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 2.6.0
> Reporter: Maysam Yabandeh
> Assignee: Maysam Yabandeh
> Priority: Minor
> Fix For: 2.8.0
>
> Attachments: MAPREDUCE-5448.patch, MAPREDUCE-5448.patch
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> MapReduce jobs also produce some invisible files such as _SUCCESS, even when
> the output format is MapFileOutputFormat. MapFileOutputFormat#getReaders
> however reads the entire content of the job output, assming that they are
> MapFiles.
> {code}
> Path[] names = FileUtil.stat2Paths(fs.listStatus(dir));
> {code}
> It should use a filter to skip the files that start with "." or "_".
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