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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-19820) add ACID stats support to background stats updater and fix bunch of edge cases found in SU tests
Date Thu, 12 Jul 2018 04:46:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-19820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16541133#comment-16541133
] 

Sergey Shelukhin commented on HIVE-19820:
-----------------------------------------

Adds support and tests for various alter table operations for txn stats.
The failing tests above are mostly due to issues with:
1) Conversion to MM (no write ID yet it calls update stats for some reason).
2) Temporary tables (didn't look at specific problem yet).
3) Some NPE in alter (need to look at changes to code paths)

> add ACID stats support to background stats updater and fix bunch of edge cases found
in SU tests
> ------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-19820
>                 URL: https://issues.apache.org/jira/browse/HIVE-19820
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>            Priority: Major
>         Attachments: HIVE-19820.01-master-txnstats.patch, HIVE-19820.01.patch, HIVE-19820.02-master-txnstats.patch,
HIVE-19820.03-master-txnstats.patch, HIVE-19820.04-master-txnstats.patch, HIVE-19820.patch,
branch-19820.02.nogen.patch, branch-19820.nogen.patch, branch-19820.nogen.patch
>
>
> Follow-up from HIVE-19418.
> Right now it checks whether stats are valid in an old-fashioned way... and also gets
ACID state, and discards it without using.
> When ACID stats are implemented, ACID state needs to be used to do version-aware valid
stats checks.



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