[jboss-jira] [JBoss JIRA] (JGRP-1660) LockService hangs during concurrent access (tryLock/tryLock(timeout)/lock/unlock)

[Architect SoftWeb.ISD (JIRA)]

Architect SoftWeb.ISD created JGRP-1660:
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             Summary: LockService hangs during concurrent access (tryLock/tryLock(timeout)/lock/unlock)
                 Key: JGRP-1660
                 URL: https://issues.jboss.org/browse/JGRP-1660
             Project: JGroups
          Issue Type: Bug
    Affects Versions: 3.3.3, 3.2.4
         Environment: Intel(R) Core(TM) i5-2310 CPU @ 2.90GHz
6GB RAM
Windows 7
JRE 1.6.31
            Reporter: Architect SoftWeb.ISD
            Assignee: Bela Ban
            Priority: Critical


We have rather simple test that starts some amount of threads which in turn simultaneously obtain lock through LockService#getLock then perform lock and unlock.
Each thread works during some time.
After couple of seconds of work some threads just hang up in Locking$ClientLock(Object).wait() called indirectly from LockService$LockImpl.tryLock().
Here is stack trace:
Thread [Thread-ClientImitation-1] (Suspended)                
                Object.wait(long) line: not available [native method]      
                Locking$ClientLock(Object).wait() line: 485          
                Locking$ClientLock.acquireTryLock(long, boolean) line: 1010       
                Locking$ClientLock.tryLock() line: 896     
                CENTRAL_LOCK(Locking).down(Event) line: 152                
                ProtocolStack.down(Event) line: 1025    
                JChannel.down(Event) line: 718                
                LockService$LockImpl.tryLock() line: 102               
                LockServiceStabilityTestCase$ClientImitation.run() line: 167        
                Thread.run() line: 662     


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