[jira] [Work started] (MAPREDUCE-5918) LineRecordReader can return same decompressor to CodecPool multiple times

["Sergey Murylev (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5918?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on MAPREDUCE-5918 started by Sergey Murylev.

> 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
>
> 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 clause some difficult reproducible and difficult diagnosable bugs in Hadoop based programs. 



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