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https://issues.apache.org/jira/browse/OOZIE-1886?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shwetha G S updated OOZIE-1886:
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Summary: Queue operation taking longer time (was: Queue operation talking
longer time)
> Queue operation taking 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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