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Posted to issues@drill.apache.org by "Venkata krishnan Sowrirajan (JIRA)" <ji...@apache.org> on 2014/09/11 02:50:33 UTC

[jira] [Resolved] (DRILL-1399) Drill-bit process threads keeps on increasing

     [ https://issues.apache.org/jira/browse/DRILL-1399?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Venkata krishnan Sowrirajan resolved DRILL-1399.
------------------------------------------------
    Resolution: Invalid

> Drill-bit process threads keeps on increasing
> ---------------------------------------------
>
>                 Key: DRILL-1399
>                 URL: https://issues.apache.org/jira/browse/DRILL-1399
>             Project: Apache Drill
>          Issue Type: Bug
>            Reporter: Venkata krishnan Sowrirajan
>
> I actually found increasing number of threads in drill-bit process whenever an exception occurs and the threads are in BLOCKED state. 
> So this is what I am trying to do.
> "select columns[0], columns[1] from `/data.csv` where columns[0] > 500000 limit 100;" This query fails with a NumberFormatException because the column header is having a string which is understandable. So if I do the same query again and again, some of the drill-bit threads goes into waiting state forever. And for the new query another set of threads are spawned which increases the number of threads with in the drillbit process over a period of time. Have anyone seen similar scenario? Wouldn't this overload the process over a period of time?
> Please let me know if you need any other details. I have the JStack output taken from drillbit process after running the query every time.



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