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https://issues.apache.org/jira/browse/OOZIE-1699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13903809#comment-13903809
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Srikanth Sundarrajan commented on OOZIE-1699:
---------------------------------------------

Debugging this further, able to identify that there is an Exception in 
CallableWrapper::run() before removeFromUniqueCallables() is invoked, leaving 
command behind in uniqueCallables list. This prevents this item from getting 
added again into the queue and since the earlier run() failed, the command 
never gets executed till a server restart.

> Some of the commands submitted to Oozie internal queue are never executed
> -------------------------------------------------------------------------
>
>                 Key: OOZIE-1699
>                 URL: https://issues.apache.org/jira/browse/OOZIE-1699
>             Project: Oozie
>          Issue Type: Bug
>            Reporter: Srikanth Sundarrajan
>            Assignee: Srikanth Sundarrajan
>
> At scale, we are seeing issues with some command submitted to the command 
> queue in CallableQueueService aren't getting executed at all.



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