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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-2188) The new API MultithreadedMapper doesn't call the initialize method of the RecordReader
Date Fri, 04 Feb 2011 02:50:23 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12990437#comment-12990437
] 

Konstantin Shvachko commented on MAPREDUCE-2188:
------------------------------------------------

test-patch results
{code}
     [exec] -1 overall.  
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec]     -1 tests included.  The patch doesn't appear to include any new or modified
tests.
     [exec]                         Please justify why no new tests are needed for this patch.
     [exec]                         Also please list what manual steps were performed to verify
this patch.
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
warnings.
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9)
warnings.
     [exec]     +1 release audit.  The applied patch does not increase the total number of
release audit warnings.
     [exec]     +1 system test framework. The patch passed system test framework compile.
     [exec] ======================================================================
{code}

> The new API MultithreadedMapper doesn't call the initialize method of the RecordReader
> --------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2188
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2188
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>         Attachments: mr2188.patch
>
>
> The wrapping RecordReader in the Multithreaded Mapper is never initialized. With HADOOP-6685,
this becomes a problem because the ReflectionUtils.copy requires a non-null configuration.

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