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https://issues.apache.org/jira/browse/HIVE-1750?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12927517#action_12927517
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Ted Yu commented on HIVE-1750:
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In ExprProcFactory.java, GenericFuncExprProcessor.process():
+ ExprNodeConstantDesc falseDesc = new ExprNodeConstantDesc(
+ wrapper.outExpr.getTypeInfo(), Boolean.TRUE);
variable name should be changed.
> Remove Partition Filtering Conditions when Possible
> ---------------------------------------------------
>
> Key: HIVE-1750
> URL: https://issues.apache.org/jira/browse/HIVE-1750
> Project: Hive
> Issue Type: Improvement
> Reporter: Siying Dong
> Assignee: Siying Dong
> Attachments: HIVE-1750.1.patch, HIVE-1750.2.patch
>
>
> For some simple queries, partition filtering constraints take 8% of CPU time
> (now 16% since we filter twice) even if the result is always true. When
> possible, we should remove these constraints to save CPU times.
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