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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3630) CompositeRecordReader: key and values can be in uninitialized state if files being joined have no records
Date Wed, 25 Jun 2008 06:02:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12607865#action_12607865

Hadoop QA commented on HADOOP-3630:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 671385.

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

    +1 tests included.  The patch appears to include 9 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    -1 javac.  The applied patch generated 443 javac compiler warnings (more than the trunk's
current 442 warnings).

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2731/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2731/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2731/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2731/console

This message is automatically generated.

> CompositeRecordReader: key and values can be in uninitialized state if files being joined
have no records
> ---------------------------------------------------------------------------------------------------------
>                 Key: HADOOP-3630
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3630
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.17.0
>            Reporter: Jingkei Ly
>             Fix For: 0.19.0
>         Attachments: 3630-0.patch
> I am using org.apache.hadoop.mapred.join.CompositeInputFormat to do an outer-join across
a number of SequenceFiles. This works fine in most circumstances, but I get NullPointerExceptions/uninitialized
data (where Writable#readFields() has not been called) when some of the files being joined
have no records in them.

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