[jira] [Updated] (OOZIE-1886) Queue operation talking longer time

["Shwetha G S (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OOZIE-1886?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shwetha G S updated OOZIE-1886:
-------------------------------

    Attachment: OOZIE-1886.patch

> Queue operation talking longer time
> -----------------------------------
>
>                 Key: OOZIE-1886
>                 URL: https://issues.apache.org/jira/browse/OOZIE-1886
>             Project: Oozie
>          Issue Type: Bug
>    Affects Versions: 4.0.1
>            Reporter: Shwetha G S
>            Assignee: Shwetha G S
>             Fix For: trunk
>
>         Attachments: OOZIE-1886.patch
>
>
> Purshotam Shah added a comment - 24/May/14 00:36
> We noticed that this fix is causing congestion. Queue operation were talking longer time than expected.
> There are two lock being used for queuing commands, which is causing delay.
> First, all queue command function of CallableQueueService is synchronized.
> Second, add function of PriorityDelayQueue need to acquire ReentrantLock
> lock, which was added as part of this patch.
> Acquiring two lock for queueing a single command was slowing down the system.
> Server was taking more than 4 sec, just to queue a command.
> After we rollback this patch and server was back to normal.



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