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

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5918?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14021210#comment-14021210 ] 

Hadoop QA commented on MAPREDUCE-5918:
--------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12648873/MAPREDUCE-5918.1.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4643//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4643//console

This message is automatically generated.

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



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