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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
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Min Zhou commented on TAJO-525:
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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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