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https://issues.apache.org/jira/browse/HIVE-16653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16007182#comment-16007182
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Vineet Garg commented on HIVE-16653:
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{code} if (stack.size() < 2 || !(stack.get(stack.size() - 2) instanceof
DummyStoreOperator)) {code} If stack happens to be empty (not sure if it could
be) second condition will throw an error. May be it is a good idea to
check/assert if stack is not empty.
> Mergejoin should give itself a correct tag
> ------------------------------------------
>
> Key: HIVE-16653
> URL: https://issues.apache.org/jira/browse/HIVE-16653
> Project: Hive
> Issue Type: Sub-task
> Reporter: Pengcheng Xiong
> Assignee: Pengcheng Xiong
> Attachments: HIVE-16653.01.patch
>
>
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