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https://issues.apache.org/jira/browse/MAPREDUCE-5918?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14021634#comment-14021634
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Sergey Murylev commented on MAPREDUCE-5918:
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Actually this bug was found during upgrade CDH 4.2.1 to 4.6.0 version. After
this update I found that some tests failed with EOFException. During
investigation I found that single instance of LineRecordReader closed by
Cascading and by MapReduce engine. If it's required I can provide test which
can show that this issue crashes Cascading.
> LineRecordReader can return same decompressor to CodecPool multiple times
> -------------------------------------------------------------------------
>
> Key: MAPREDUCE-5918
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5918
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.3.0
> Reporter: Sergey Murylev
> Assignee: Sergey Murylev
> Priority: Minor
> Fix For: trunk
>
> Attachments: MAPREDUCE-5918.1.patch
>
>
> LineRecordReader can return same decompressor to CodecPool multiple times if
> method close() called multiple times. In this case CodecPool doesn't
> guarantee that it always return different decompressors. This issue can cause
> some difficult reproducible and difficult diagnosable bugs in Hadoop based
> programs.
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