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From "Prasanth Jayachandran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-11863) FS based stats collection generates wrong results for tez (for union queries)
Date Thu, 17 Sep 2015 07:03:46 GMT

    [ https://issues.apache.org/jira/browse/HIVE-11863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14791682#comment-14791682
] 

Prasanth Jayachandran commented on HIVE-11863:
----------------------------------------------

[~ashutoshc] Is this a known issue?

> FS based stats collection generates wrong results for tez (for union queries)
> -----------------------------------------------------------------------------
>
>                 Key: HIVE-11863
>                 URL: https://issues.apache.org/jira/browse/HIVE-11863
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 1.3.0, 2.0.0
>            Reporter: Prasanth Jayachandran
>
> FS based stats collection is the default way to collect stats. However, there are some
cases (involving unions) where it generates wrong results. Refer test case in HIVE-11860 and
compare test cli driver results against tez results. Also it will be good to extend statsfs.q
test case with union queries.



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