[jira] [Commented] (HIVE-15272) "LEFT OUTER JOIN" Is not populating correct records with Hive On Spark

["Miklos Szurap (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-15272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15961373#comment-15961373 ] 

Miklos Szurap commented on HIVE-15272:
--------------------------------------

As the amount field is a DECIMAL, it is very likely that HIVE-12768 is the root cause.

> "LEFT OUTER JOIN" Is not populating correct records with Hive On Spark
> ----------------------------------------------------------------------
>
>                 Key: HIVE-15272
>                 URL: https://issues.apache.org/jira/browse/HIVE-15272
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive, Spark
>    Affects Versions: 1.1.0
>         Environment: Hive 1.1.0, CentOS, Cloudera 5.7.4
>            Reporter: Vikash Pareek
>            Assignee: Rui Li
>
> I ran following Hive query multiple times with execution engine as Hive on Spark and Hive on MapReduce.
> {code}
> SELECT COUNT(DISTINCT t1.region, t1.amount)
> FROM my_db.my_table1 t1
> LEFT OUTER
> JOIN my_db.my_table2 t2 ON (t1.id = t2.id
>                             AND t1.name = t2.name)
> {code}
> With Hive on Spark: Result (count) were different of every execution.
> With Hive on MapReduce: Result (count) were same of every execution.
> Seems like Hive on Spark behaving differently in each execution and does not populating correct result.



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