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https://issues.apache.org/jira/browse/PIG-4202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14151995#comment-14151995
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Daniel Dai commented on PIG-4202:
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Pig has a single PigOutputCommitter derived from mapreduce.OutputCommitter even
when there are multiple HDFS outputs. PigOutputCommitter is a wrapper, and it
will invoke individual OutputCommitter sequentially. We only experience static
variable issue with PigOutputCommitter itself. If the wrapped OutputCommitter
has its own static variable, yes, they might have some issues as well.
> UDFContext.isFrontend return true for OutputCommitter in local mode
> -------------------------------------------------------------------
>
> Key: PIG-4202
> URL: https://issues.apache.org/jira/browse/PIG-4202
> Project: Pig
> Issue Type: Bug
> Components: impl
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Fix For: 0.14.0
>
> Attachments: PIG-4202-1.patch, PIG-4202-2.patch
>
>
> We switch to use UDFContext.isFrontend in PIG-4187. However, it does not work
> as expected in local mode. This causes some local mode test fail
> (TestOrcStoragePushdown.createInputData).
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