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https://issues.apache.org/jira/browse/HIVE-16511?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16199364#comment-16199364
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Ashutosh Chauhan commented on HIVE-16511:
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+1 minor comments on RB.
> CBO looses inner casts on constants of complex type
> ---------------------------------------------------
>
> Key: HIVE-16511
> URL: https://issues.apache.org/jira/browse/HIVE-16511
> Project: Hive
> Issue Type: Bug
> Components: CBO, Query Planning
> Reporter: Ashutosh Chauhan
> Assignee: Vineet Garg
> Attachments: HIVE-16511.1.patch, HIVE-16511.2.patch
>
>
> type for map <10, cast(null as int)> becomes map <int,string>
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