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https://issues.apache.org/jira/browse/HIVE-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12872024#action_12872024
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Ning Zhang commented on HIVE-80:
--------------------------------

I think after HIVE-549 (parallel execution) was committed, Driver allows more 
than one tasks running in parallel. So this JIRA may be fixed as a by-product. 
But we never tried it yet. It may make sense to try it on trunk or release 0.5. 

> Allow Hive Server to run multiple queries simulteneously
> --------------------------------------------------------
>
>                 Key: HIVE-80
>                 URL: https://issues.apache.org/jira/browse/HIVE-80
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Server Infrastructure
>            Reporter: Raghotham Murthy
>            Assignee: Neil Conway
>            Priority: Critical
>         Attachments: hive_input_format_race-2.patch
>
>
> Can use one driver object per query.

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