NullPointerException occurs from a org.infinispan.distribution.JoinTask.performRehash

Error exception link (let me know if I should paste here next time) http://pastebin.com/E237tmY8

This is happening for me locally and appears to be timing related. I'm trying to understand why (current AS6 testsuite) SessionCountUnitTestCase is failing on hudson, so I have been adding debug logging in various places to gain more understanding. This changes the timing it seems and I get the NPE.

The AS test source is at https://anonsvn.jboss.org/repos/jbossas/trunk/testsuite/src/main/org/jboss/test/cluster/defaultcfg/simpleweb/test/SessionCountUnitTestCase.java and the test is testReplicatedRedeploy.

The hudson link (shows a timeout error) is (in case there is interest in seeing the failure we are trying to chase down): https://hudson.jboss.org/hudson/job/JBoss-AS-6.0.x-testSuite-sun16/932/testReport/org.jboss.test.cluster.defaultcfg.simpleweb.test/SessionCountUnitTestCase%28Default-udp%29/testReplicatedRedeploy