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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6261) NullPointerException if MapOutputBuffer.flush invoked twice
Date Wed, 18 Feb 2015 19:33:12 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14326439#comment-14326439
] 

Hudson commented on MAPREDUCE-6261:
-----------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #7145 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/7145/])
MAPREDUCE-6261. NullPointerException if MapOutputBuffer.flush invoked twice. Contributed by
Tsuyoshi OZAWA (jlowe: rev 4981d082d4f3c82d1c2c900c7488b83bf20301cc)
* hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/MapTask.java
* hadoop-mapreduce-project/CHANGES.txt


> NullPointerException if MapOutputBuffer.flush invoked twice
> -----------------------------------------------------------
>
>                 Key: MAPREDUCE-6261
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6261
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 2.5.0
>            Reporter: Jason Lowe
>            Assignee: Tsuyoshi OZAWA
>             Fix For: 2.7.0
>
>         Attachments: MAPREDUCE-6261.1.patch, MAPREDUCE-6261.2.patch
>
>
> MapOutputBuffer.flush will throw an NPE if it is invoked twice, since it blindly assumes
kvbuffer is not null yet sets kvbuffer to null towards the end of the method.



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