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From "Matt McCline (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HIVE-12562) Enabling native fast hash table can cause incorrect results
Date Thu, 12 May 2016 11:01:12 GMT

     [ https://issues.apache.org/jira/browse/HIVE-12562?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matt McCline resolved HIVE-12562.
---------------------------------
      Resolution: Duplicate
    Release Note: HIVE-13682

> Enabling native fast hash table can cause incorrect results
> -----------------------------------------------------------
>
>                 Key: HIVE-12562
>                 URL: https://issues.apache.org/jira/browse/HIVE-12562
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Siddharth Seth
>            Assignee: Matt McCline
>
> Enabling "hive.vectorized.execution.mapjoin.native.fast.hashtable.enabled" causes incorrect
results when running with LLAP.
> I believe this does not happen for simple container runs. However, it's possible that
caching of these tables, or using the same table more than once causes issues - which may
be seen with container reuse.
> The results vary by a small percentage.
> e.g. 82270, 82267 <- Two results for the same query run back to back.
> cc [~mmccline]



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