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https://issues.apache.org/jira/browse/IMPALA-14419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18019751#comment-18019751
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weihua zhang commented on IMPALA-14419:
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https://issues.apache.org/jira/browse/CALCITE-7086
maybe helpful
> Calcite Planner: v1.40 of IntersectToDistinctRule throws exception
> ------------------------------------------------------------------
>
> Key: IMPALA-14419
> URL: https://issues.apache.org/jira/browse/IMPALA-14419
> Project: IMPALA
> Issue Type: Sub-task
> Reporter: Steve Carlin
> Priority: Major
>
> The IntersectToDistinctRule is needed to change the LogicalIntersect RelNode
> into a RelNode that Impala can understand. This Calcite v1.37 version of
> this rule worked fine with Impala.
> On upgrade to v1.40, the rule stopped working. This is because it adds a
> COUNT() FILTER function which has issues that need further investigating.
> Since the rule works fine for 1.37 and it was just an optimization that was
> added, we can continue to use the 1.37 rule until the problem is fixed. A
> Jira will be filed for enabling the 1.40 rule to work.
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