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https://issues.apache.org/jira/browse/FLINK-28992?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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godfrey he reassigned FLINK-28992:
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Assignee: Yunhong Zheng
> Change Ndv takes the max value instead of sum of all partitions when getting
> partition table column stats
> ---------------------------------------------------------------------------------------------------------
>
> Key: FLINK-28992
> URL: https://issues.apache.org/jira/browse/FLINK-28992
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.16.0
> Reporter: Yunhong Zheng
> Assignee: Yunhong Zheng
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.16.0
>
>
> Now, when we obtain column statistics Ndv of the partition table, we use the
> method of taking sum of Ndv of all partitions, which will cause the obtained
> stats to be far from the real stats. So now we take the max value instead of
> sum of all partitions.
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