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https://issues.apache.org/jira/browse/HIVE-1538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12965508#action_12965508
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He Yongqiang commented on HIVE-1538:
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I am not familiar with the ppd code, just a few questions:
In ExprWalkerProcFactory.java line 291,
{noformat}
} else if (!FunctionRegistry.isOpAnd(expr)) {
{noformat}
why this is needed? For example, what will happen if it is a OpNot?
In OpProcFactory, why there is a createFilter in ScriptPPD, JoinPPD, and
DefaultPPD?
> FilterOperator is applied twice with ppd on.
> --------------------------------------------
>
> Key: HIVE-1538
> URL: https://issues.apache.org/jira/browse/HIVE-1538
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Amareshwari Sriramadasu
> Assignee: Amareshwari Sriramadasu
> Fix For: 0.7.0
>
> Attachments: patch-1538.txt
>
>
> With hive.optimize.ppd set to true, FilterOperator is applied twice. And it
> seems second operator is always filtering zero rows.
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