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https://issues.apache.org/jira/browse/HIVE-14957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15574481#comment-15574481
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Pengcheng Xiong commented on HIVE-14957:
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I agree. Is there any utility method to find out the position of an input Rel?
Thanks.
> HiveSortLimitPullUpConstantsRule misses branches when parent operator is Union
> ------------------------------------------------------------------------------
>
> Key: HIVE-14957
> URL: https://issues.apache.org/jira/browse/HIVE-14957
> Project: Hive
> Issue Type: Sub-task
> Reporter: Pengcheng Xiong
> Assignee: Pengcheng Xiong
> Attachments: HIVE-14957.01.patch
>
>
> {code}
> call.transformTo(parent.copy(parent.getTraitSet(),
> ImmutableList.of(relBuilder.build())));
> {code}
> When parent is an union operator which has 2 inputs, the parent.copy will
> only copy the one that has SortLimit and ignore the other branches.
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