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https://issues.apache.org/jira/browse/OOZIE-1699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14011410#comment-14011410
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Purshotam Shah commented on OOZIE-1699:
---------------------------------------
{quote}
But from CallableQueueService perspective, I don't see how the same command can
be queued in parallel as CallabeQueueService.queue() is synchronised and
filterDuplicates will remove the 2nd queue().
{quote}
The problem we notice was not with queuing same command in parallel, but system
congestion because of acquiring two lock for a queue command.
{quote}
Anyways, the lock in offer() can be removed.
{quote}
Other option could be is to keep lock in offer(), so that peek() and offer()
uses same lock. We can remove synchronized keyword for
CallableQueueService.queue() and queueSerial.
> 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
> Priority: Critical
> Fix For: trunk
>
> Attachments: OOZIE-1699-v1-no-prefix.patch, OOZIE-1699.patch
>
>
> 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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