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https://issues.apache.org/jira/browse/PIG-2296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13109318#comment-13109318
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Todd Lipcon commented on PIG-2296:
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looks like the faulty optimization is {{FilterLogicExpressionSimplifier}} -
running with that disabled generates the correct result.
> case where optimizer causes incorrect filtering
> -----------------------------------------------
>
> Key: PIG-2296
> URL: https://issues.apache.org/jira/browse/PIG-2296
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.8.1
> Reporter: Todd Lipcon
> Priority: Critical
> Attachments: er.head
>
>
> I have a script which reproducibly generates incorrect filter results on Pig
> 0.8.1. Haven't tried to reproduce on 0.9 or trunk.
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