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Posted to common-dev@hadoop.apache.org by "Chris Douglas (JIRA)" <ji...@apache.org> on 2008/07/01 09:29:44 UTC
[jira] Updated: (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:all-tabpanel ]
Chris Douglas updated HADOOP-3630:
----------------------------------
Fix Version/s: 0.18.0
Assignee: Chris Douglas
Is it too late for this to make it into 0.18?
> 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, 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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