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https://issues.apache.org/jira/browse/HIVE-12021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14943902#comment-14943902
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Laljo John Pullokkaran commented on HIVE-12021:
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[~jcamachorodriguez] The logic of traversing expressions
(ExtractCommonOperands) is not recursive and misses many of the use cases. I
think it can be changed to traverse recursively. Also check for comparison need
to take in to account functions (ex: ((x+y)=10 and z=1) or ((x+y)=10 and z=2) ).
> HivePreFilteringRule may introduce wrong common operands
> --------------------------------------------------------
>
> Key: HIVE-12021
> URL: https://issues.apache.org/jira/browse/HIVE-12021
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Affects Versions: 1.3.0, 1.2.1, 2.0.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Fix For: 1.3.0, 2.0.0, 1.2.2
>
> Attachments: HIVE-12021.01.patch, HIVE-12021.02.patch,
> HIVE-12021.02.patch
>
>
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