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https://issues.apache.org/jira/browse/HIVE-11863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14791744#comment-14791744
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Ashutosh Chauhan commented on HIVE-11863:
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I am not aware of any such issue. Does this happen only on Tez and not on MR ?
> 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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