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Posted to dev@hive.apache.org by "Namit Jain (Commented) (JIRA)" <ji...@apache.org> on 2012/04/06 08:14:54 UTC
[jira] [Commented] (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:comment-tabpanel&focusedCommentId=13248114#comment-13248114 ]
Namit Jain commented on HIVE-2929:
----------------------------------
https://reviews.facebook.net/differential/diff/8571/
> 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
>
> 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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