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https://issues.apache.org/jira/browse/HIVE-18804?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zoltan Haindrich reassigned HIVE-18804:
---------------------------------------

    Assignee: Zoltan Haindrich

> StatsUtils.getColStatisticsFromExprMap may only provide info for a column once
> ------------------------------------------------------------------------------
>
>                 Key: HIVE-18804
>                 URL: https://issues.apache.org/jira/browse/HIVE-18804
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Statistics
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>         Attachments: HIVE-18804.01.patch
>
>
> currently {{StatsUtils.getColStatisticsFromExprMap}} may duplicate the 
> datasize by passing the info about the same column more than once
> https://github.com/apache/hive/blob/e8e5ab24616aa834f4966efe3a5f437f6bee4d1d/ql/src/java/org/apache/hadoop/hive/ql/stats/StatsUtils.java#L1529



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