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Date: Mon, 20 Jan 2014 08:15:21 +0000 (UTC)
From: "Min Zhou (JIRA)" <jira@apache.org>
To: dev@tajo.incubator.apache.org
Message-ID: <JIRA.12689742.1390183276111.32419.1390205721136@arcas>
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Subject: [jira] [Commented] (TAJO-525) Concurrent queries hang
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    [ https://issues.apache.org/jira/browse/TAJO-525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13876239#comment-13876239 ] 

Min Zhou commented on TAJO-525:
-------------------------------

I agree with Hyunsik. 
Thanks for the help, Hyoungjun.

> Concurrent queries hang
> -----------------------
>
>                 Key: TAJO-525
>                 URL: https://issues.apache.org/jira/browse/TAJO-525
>             Project: Tajo
>          Issue Type: Bug
>    Affects Versions: 0.8-incubating
>            Reporter: Min Zhou
>            Priority: Critical
>             Fix For: 0.8-incubating
>
>         Attachments: TAJO-525.patch, pstack
>
>
> When I run a simple query "select count(1) from lineitem;" in one tsql session and after that run the 2nd query in another tsql session.  The 2nd one hung.  
> After the 1st one done,  the 2nd one still stuck at 0%.
> After that, run the same query in the first tsql session, the 3rd query also hung.  


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