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https://issues.apache.org/jira/browse/CALCITE-3297?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16918830#comment-16918830
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Julian Hyde commented on CALCITE-3297:
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[~IhorHuzenko], Thanks for the rapid response, and reviewing your fix now.
[~khaitran], Please review also.
> PigToSqlAggregateRule should be applied on multi-set projection to produce an
> optimal plan
> ------------------------------------------------------------------------------------------
>
> Key: CALCITE-3297
> URL: https://issues.apache.org/jira/browse/CALCITE-3297
> Project: Calcite
> Issue Type: Bug
> Components: piglet
> Reporter: Khai Tran
> Assignee: Igor Guzenko
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.21.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Fixed testMultisetProjection() in PigRelOpTest.java to make sure the
> PigToSqlAggregateRule is applied to produce an optimized plan for doing
> multiset projection after COLLECT() agg func.
> The optimization rule was blocked by change in CALCITE-3138.
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