[jboss-jira] [JBoss JIRA] Reopened: (JBCACHE-1165) Endless loop in PessimisticLockInterceptor, sometimes seen as a NodeNotExistsException (when using READ_COMMITTED)

[Jason T. Greene (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBCACHE-1165?page=all ]

Jason T. Greene reopened JBCACHE-1165:
--------------------------------------

             
The fix introduced another endless loop problem:

Line 441:
else 
{      
      // do the loop again, but don't assign child_node to currentNode so that child_node is processed again.
       if (System.currentTimeMillis() > expiryTime)
        {
               throw new TimeoutException("Unable to acquire lock on child node " + new Fqn(currentNode.getFqn(), childName) + " after " + timeout + " millis.");
          }
 }

Since currentNode is not set to the peeked node, this code will loop until a timeout occurs, at which point an exception is always thrown.

> Endless loop in PessimisticLockInterceptor, sometimes seen as a NodeNotExistsException (when using READ_COMMITTED)
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: JBCACHE-1165
>                 URL: http://jira.jboss.com/jira/browse/JBCACHE-1165
>             Project: JBoss Cache
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 2.0.0.GA, 1.4.1.SP4
>         Environment: Windows XP, Sun jdk150_06 
> Solaris 10
> READ_COMMITTED
>            Reporter: Jacek Halat
>         Assigned To: Manik Surtani
>             Fix For: 2.1.0.GA, 2.1.0.CR2
>
>         Attachments: ConcurentPutRemoveTest.java, ConsoleOut.log
>
>
> See ConcurrentPutRemoveTest
> This sometimes manifests itself as an endless loop, and sometimes as a NodeNotExistsException (on the putter thread)  when concurrent puts and removes are involved.

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