[jboss-jira] [JBoss JIRA] Commented: (JBCACHE-1168) Sometimes aquired locks are not released

[Manik Surtani (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBCACHE-1168?page=comments#action_12376824 ] 
            
Manik Surtani commented on JBCACHE-1168:
----------------------------------------

See http://jboss.org/index.html?module=bb&op=viewtopic&t=118186 for detailed explanation by Jacek

> Sometimes aquired locks are not released
> ----------------------------------------
>
>                 Key: JBCACHE-1168
>                 URL: http://jira.jboss.com/jira/browse/JBCACHE-1168
>             Project: JBoss Cache
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: PojoCache
>    Affects Versions: 1.4.1.SP4
>         Environment: Windows XP, jrockit90_150_06 
> Solaris 10
>            Reporter: Jacek Halat
>         Assigned To: Jason T. Greene
>         Attachments: jbosscache.log, output.txt, TransactionStormTest.java
>
>
> Sometimes under heavy load acquired locks are not released - node is locked forever. Only what can we do is stop/start cache.
> Main loop:
> 		while (true) {
> 			for (int x = 0; x < 2; x++) {
> 				WorkThread t = new WorkThread(x == 1);
> 				threads.add(t);
> 				t.start();
> 			}
> 			for (WorkThread separateThread : threads) {
> 				separateThread.join();
> 				if (separateThread.getException() != null) {
> 					//separateThread.getException().getMessage();
> 				}
> 			}
> 			int locksNum = getNumberOfLocksHeld();
> //			System.out.println("Locks="+locksNum);
> 			// checkpoint
> 			if (cache.getNumberOfLocksHeld()>0){
> 				System.out.println("ERROR, locks="+locksNum);
> 				doDomethingOnCache(1);
> 			}
> 			assertEquals(0, locksNum);
> 		}
> Exception - after //checkpoint line numberOfLocks is grater than 0!
> JUnit is provided to this issue, but this error is nondeterministic - sometimes fails after 5 seconds and another time after 20 minutes. 

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