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Posted to issues@hive.apache.org by "Sergey Shelukhin (JIRA)" <ji...@apache.org> on 2016/01/29 20:28:39 UTC

[jira] [Commented] (HIVE-12956) run CBO in tests with mapred.mode=strict

    [ https://issues.apache.org/jira/browse/HIVE-12956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15124043#comment-15124043 ] 

Sergey Shelukhin commented on HIVE-12956:
-----------------------------------------

Hmm... this patch would entirely disable CBO in tests. Sounds like a plan! :)

> run CBO in tests with mapred.mode=strict
> ----------------------------------------
>
>                 Key: HIVE-12956
>                 URL: https://issues.apache.org/jira/browse/HIVE-12956
>             Project: Hive
>          Issue Type: Test
>            Reporter: Sergey Shelukhin
>            Assignee: Ashutosh Chauhan
>         Attachments: HIVE-12956.patch
>
>
> There's a strange condition in CBO check that prevents CBO from running in Hive tests (in tests specifically) when mapred.mode is set to strict. I remember seeing it before, and noticed it again recently.
> It is both surprising that we wouldn't test CBO in strict mode, and also problematic for some q files because strict mode is going to be deprecated in HIVE-12727. This needs to be removed.



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