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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3516) Possible NPE in org.apache.hadoop.mapred.MapTask.MapOutputBuffer.collect(K key, V value, int partition)
Date Mon, 23 Jan 2012 11:46:40 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13191124#comment-13191124
] 

Hadoop QA commented on MAPREDUCE-3516:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12511487/MAPREDUCE-3516.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    -1 patch.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1651//console

This message is automatically generated.
                
> Possible NPE in org.apache.hadoop.mapred.MapTask.MapOutputBuffer.collect(K key, V value,
int partition)
> -------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3516
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3516
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.20.1, 0.20.2, 0.20.203.0, 0.20.205.0, 0.23.0
>            Reporter: Subroto Sanyal
>            Assignee: Subroto Sanyal
>         Attachments: MAPREDUCE-3516.patch
>
>
> *org.apache.hadoop.mapred.MapTask.MapOutputBuffer.collect* accepts a pair of Key and
Value. There is chance that if somehow if a Null value or Key is passed to the method, we
can end up having NPE.

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