[jira] [Commented] (HIVE-2929) race condition in DAG execute tasks for hive

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

    [ https://issues.apache.org/jira/browse/HIVE-2929?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13548132#comment-13548132 ] 

Hudson commented on HIVE-2929:
------------------------------

Integrated in Hive-trunk-hadoop2 #54 (See [https://builds.apache.org/job/Hive-trunk-hadoop2/54/])
    HIVE-2929 race condition in DAG execute tasks for hive (Namit Jain via Siying Dong) (Revision 1310619)

     Result = ABORTED
sdong : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1310619
Files : 
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/Driver.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/HadoopJobExecHelper.java

                
> race condition in DAG execute tasks for hive
> --------------------------------------------
>
>                 Key: HIVE-2929
>                 URL: https://issues.apache.org/jira/browse/HIVE-2929
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Namit Jain
>            Assignee: Namit Jain
>             Fix For: 0.10.0
>
>         Attachments: hive.2929.1.patch
>
>
> select ...
> (
> SubQuery involving MapReduce
> union all
> SubQuery involving MapReduce
> );
> or 
> select ...
> (SubQuery involving MapReduce)
> join
> (SubQuery involving MapReduce)
> ;
> If both the subQueries finish at nearly the same time, there is a race 
> condition in which the results of the subQuery finishing last will be completely missed.

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