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https://issues.apache.org/jira/browse/HIVE-11646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14721028#comment-14721028
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Jesus Camacho Rodriguez commented on HIVE-11646:
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[~pxiong], could you explain briefly this fix? A test case/query where the
problem is observed would help.
My understanding is that we were handling multiple window specs: for each
RexOver node, loop in line 278 of HiveOpConverter should convert it and
immediately add it to the plan. Or isn't this the case?
Thanks
> CBO: Calcite Operator To Hive Operator (Calcite Return Path): fix multiple
> window spec for PTF operator
> -------------------------------------------------------------------------------------------------------
>
> Key: HIVE-11646
> URL: https://issues.apache.org/jira/browse/HIVE-11646
> Project: Hive
> Issue Type: Sub-task
> Components: CBO
> Reporter: Pengcheng Xiong
> Assignee: Pengcheng Xiong
> Attachments: HIVE-11646.01.patch
>
>
> Current return path only supports a single windowing spec. All the following
> window spec will overwrite the first one.
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