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https://issues.apache.org/jira/browse/MAPREDUCE-2862?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sadayuki Furuhashi updated MAPREDUCE-2862:
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Attachment: MAPREDUCE-2862-warn-and-ignore-corrupted-blocks.patch
Breaks infinite loop in CombineFileInputFormat.getMoreSplits by ignoring
corrupted blocks.
> Infinite loop in CombineFileInputFormat#getMoreSplits(), with missing blocks
> ----------------------------------------------------------------------------
>
> Key: MAPREDUCE-2862
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2862
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Kazuki Ohta
> Attachments: MAPREDUCE-2862-warn-and-ignore-corrupted-blocks.patch
>
>
> Hi, we met the infinite loop on CombineFileInputFormat#getMoreSplits().
> At first, we lost some blocks by mis-operation :-(. Then, one job tried to
> use these missing blocks. At that time getMoreSplits() goes into the infinite
> loop.
> From our investigation, this List could be an empty array.
> > https://github.com/apache/hadoop-mapreduce/blob/trunk/src/java/org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.java#L363
> Then 'for' loop just after that line does nothing, and entry is not removed
> from 'blockToNodes'.
> Finally this line goes into the infinite loop.
> > https://github.com/apache/hadoop-mapreduce/blob/trunk/src/java/org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.java#L348
> We're now creating the patch against this problem...
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