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https://issues.apache.org/jira/browse/PIG-3355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13686997#comment-13686997
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Aniket Mokashi commented on PIG-3355:
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[~knoguchi], Feel free to rebase and submit a patch for 0.11.
> ColumnMapKeyPrune bug with distinct operator
> --------------------------------------------
>
> Key: PIG-3355
> URL: https://issues.apache.org/jira/browse/PIG-3355
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.9.2, 0.10.1, 0.11.1
> Reporter: Jeremy Karn
> Assignee: Jeremy Karn
> Attachments: PIG-3355.patch
>
>
> We came across a bug that happens when you have a distinct operator
> immediately followed by a union where the result of the union has at least
> one column that will be pruned by ColumnMapKeyPrune. There's a test showing
> an example script in the submitted patch.
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