[OOZIE-1886] Queue operation taking longer time

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.1
• Fix Version/s: 4.1.0
• Assignee: Shwetha GS
• Reporter: Shwetha GS
• Created: 18/Jun/14 11:12
• Updated: 09/Dec/14 00:45
• Resolved: 07/Jul/14 22:00

Description

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.

Issue Links

• is broken by: OOZIE-1699 Some of the commands submitted to Oozie internal queue are never executed