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https://issues.apache.org/jira/browse/PIG-2870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438926#comment-13438926
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Raghu Angadi commented on PIG-2870:
-----------------------------------
+1 for reverting PIG-2578. As Rohini pointed out it was essentially a
workaround for a HCat issue. It made things worse.
> pigServer.openIterator fails for jobs with no input splits
> ----------------------------------------------------------
>
> Key: PIG-2870
> URL: https://issues.apache.org/jira/browse/PIG-2870
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.11
> Reporter: Bill Graham
> Assignee: Bill Graham
> Attachments: PIG-2870.1.patch
>
>
> Jobs that have valid input data, but 0 input splits (this is the case where
> indexing implemented in the {{InputFormat}} might return 0 splits for an
> aggressive filter) fail when {{pigServer.openIterator}} is called. This is
> because {{mapred.output.dir}} isn't set, so the job succeeds without creating
> the empty output directory. The {{ReadToEndLoader}} then fails due to the
> null input directory.
> It seems PIG-2578 introduced this issue.
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