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Posted to common-dev@hadoop.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2008/08/22 14:34:47 UTC

[jira] Commented: (HADOOP-3630) CompositeRecordReader: key and values can be in uninitialized state if files being joined have no records

    [ https://issues.apache.org/jira/browse/HADOOP-3630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12624674#action_12624674 ] 

Hudson commented on HADOOP-3630:
--------------------------------

Integrated in Hadoop-trunk #581 (See [http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/581/])

> 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
>            Assignee: Chris Douglas
>             Fix For: 0.18.0
>
>         Attachments: 3630-0.patch, 3630-1.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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