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Posted to dev@lens.apache.org by "Rajat Khandelwal (JIRA)" <ji...@apache.org> on 2017/08/28 10:35:00 UTC

[jira] [Commented] (LENS-1464) One or two queued queries failing with ConcurrentModificationException on restart

    [ https://issues.apache.org/jira/browse/LENS-1464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16143613#comment-16143613 ] 

Rajat Khandelwal commented on LENS-1464:
----------------------------------------

Taking patch from reviewboard and attaching

> One or two queued queries failing with ConcurrentModificationException on restart 
> ----------------------------------------------------------------------------------
>
>                 Key: LENS-1464
>                 URL: https://issues.apache.org/jira/browse/LENS-1464
>             Project: Apache Lens
>          Issue Type: Bug
>          Components: server
>            Reporter: Rajat Khandelwal
>            Assignee: Rajat Khandelwal
>         Attachments: LENS-1464.01.patch
>
>
> Happens because of synchronizations issues. If two queries are simultaneously launching, both try to add resources to hive driver. One of those queries can fail then. 



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