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https://issues.apache.org/jira/browse/PIG-179?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alan Gates reopened PIG-179:
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This patch conflicts with the fix for PIG-55. I'll regenerate it and attach
the new patch.
> On hadoop 0.16, some jobs using combiner fail with an NPE
> ---------------------------------------------------------
>
> Key: PIG-179
> URL: https://issues.apache.org/jira/browse/PIG-179
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.0.0
> Environment: Hadoop 0.16
> Reporter: Alan Gates
> Assignee: Alan Gates
> Fix For: 0.1.0
>
> Attachments: PIG-179.patch
>
>
> Some jobs (it appears to only be larger jobs) now fail with an NPE in the
> combiner code on this line:
> {code}
> PigSplit split =
> PigInputFormat.PigRecordReader.getPigRecordReader().getPigFileSplit();
> {code}
> Looking into the PigRecordReader a comment in the class indicates that, as
> implemented, it depends on the mapper and splitter (and in this case the
> combiner as well) running in the same thread. It seems that in some cases in
> hadoop 0.16 this is no longer the case.
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