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https://issues.apache.org/jira/browse/HIVE-5866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13830342#comment-13830342
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Xuefu Zhang commented on HIVE-5866:
-----------------------------------
An issue regarding UDAFs was identified and JIRA HIVE-5872 is logged.
> Hive divide operator generates wrong results in certain cases
> -------------------------------------------------------------
>
> Key: HIVE-5866
> URL: https://issues.apache.org/jira/browse/HIVE-5866
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.13.0
> Reporter: Xuefu Zhang
> Assignee: Xuefu Zhang
> Attachments: HIVE-5866.1.patch, HIVE-5866.2.patch, HIVE-5866.patch
>
>
> Current GenericUDFOPDivide seems having a bug. The following query generates
> NULL result.
> {code}
> hive> select 4BD / 25BD from test limit 1;
> ...
> Total MapReduce CPU Time Spent: 890 msec
> OK
> NULL
> Time taken: 7.901 seconds, Fetched: 1 row(s)
> {code}
> The correct result should be 0.16 in this query.
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