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https://issues.apache.org/jira/browse/HIVE-18571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16344440#comment-16344440
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Sergey Shelukhin commented on HIVE-18571:
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[~ekoifman] [~steveyeom2017]
this one is for stats... first, it removes double aggregation of stats in case
of insert overwrite.
Then, it actually doesn't call populate quick stats for ACID tables anymore
after create, because the logic there is completely bogus for ACID tables (#
and size of the files). This may affect some existing out file stats for ACID.
> stats issues for MM tables
> --------------------------
>
> Key: HIVE-18571
> URL: https://issues.apache.org/jira/browse/HIVE-18571
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Priority: Major
> Attachments: HIVE-18571.patch
>
>
> There are multiple stats aggregation issues with MM tables.
> Some simple stats are double counted and some stats (simple stats) are
> invalid for ACID table dirs altogether.
> I have a patch almost ready, need to fix some more stuff and clean up.
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