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https://issues.apache.org/jira/browse/HIVE-18395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16317130#comment-16317130
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Steve Yeom edited comment on HIVE-18395 at 1/9/18 6:30 PM:
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I talked with Ashutosh Chauhan.
We turned off using stats on ACID/MM since the operations to insert onto a
ACID/MM table
and to update the Metastore metadata on the table regarding stats are not in a
single transaction.
I.e., there could be a case where inserts on MM/ACID are successful but
updating
stats on the table in the Metastore are unsuccessful.
Probably to make the set of operations (insert and Metastore metadata update)
transactional will fix the issue.
was (Author: steveyeom2017):
I talked with Ashutosh Chauhan.
We turned off using stats on ACID/MM since the operation to insert onto a
ACID/MM table
and updating the Metastore on the table regarding stats is not transactional.
I.e., there could be a case where inserts on MM/ACID are successful but
updating
stats on the table in the Metastore are unsuccessful.
Probably to make the set of operations (insert and Metastore metadata update)
transactional will fix the issue.
> 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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