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Posted to dev@hive.apache.org by "Namit Jain (Assigned) (JIRA)" <ji...@apache.org> on 2012/04/06 23:17:21 UTC

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

     [ https://issues.apache.org/jira/browse/HIVE-2929?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Namit Jain reassigned HIVE-2929:
--------------------------------

    Assignee: Namit Jain
    
> 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
>         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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