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https://issues.apache.org/jira/browse/HIVE-18395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16318893#comment-16318893
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Steve Yeom commented on HIVE-18395:
-----------------------------------

Another viewpoint/reason why not using stats on a ACID/MM table is that 
a reader/select statement can not have a snapshot isolation regarding "actual 
data" and "stats on the Metastore". 
Since update on the data and the stats on the Metastore is not single 
transaction based.

> Using stats for aggregates on Acid/MM is off even with 
> "hive.compute.query.using.stats" is true.
> ------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-18395
>                 URL: https://issues.apache.org/jira/browse/HIVE-18395
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 3.0.0
>            Reporter: Steve Yeom
>            Priority: Minor
>




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