this error message came in an ESB cluster, master node. Is this a known
issue? or an configuration error ?

[2012-01-23 14:53:37,010] ERROR - NAKACK couldn't deliver message [dst:
<null>, src: localhost-25598 (3 headers), size=0 bytes]
java.lang.NullPointerException
at
org.infinispan.remoting.transport.jgroups.JGroupsTransport.needsToRejoin(JGroupsTransport.java:515)
at
org.infinispan.remoting.transport.jgroups.JGroupsTransport.viewAccepted(JGroupsTransport.java:495)
 at
org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.handleUpEvent(MessageDispatcher.java:729)
at
org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:772)
 at org.jgroups.JChannel.up(JChannel.java:1453)
at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:887)
 at org.jgroups.protocols.pbcast.FLUSH.up(FLUSH.java:446)
at
org.jgroups.protocols.pbcast.STREAMING_STATE_TRANSFER.up(STREAMING_STATE_TRANSFER.java:265)
 at org.jgroups.protocols.FRAG2.up(FRAG2.java:188)
at org.jgroups.protocols.FC.up(FC.java:494)
 at org.jgroups.protocols.pbcast.GMS.installView(GMS.java:597)
at
org.jgroups.protocols.pbcast.ParticipantGmsImpl.handleViewChange(ParticipantGmsImpl.java:152)
 at org.jgroups.protocols.pbcast.GMS.up(GMS.java:797)
at org.jgroups.protocols.pbcast.STABLE.up(STABLE.java:234)
 at org.jgroups.protocols.UNICAST.up(UNICAST.java:309)
at org.jgroups.protocols.pbcast.NAKACK.handleMessage(NAKACK.java:877)
 at org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:671)
at org.jgroups.protocols.BARRIER.up(BARRIER.java:120)
 at org.jgroups.protocols.FD_ALL.up(FD_ALL.java:177)
at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:270)
 at org.jgroups.protocols.MERGE2.up(MERGE2.java:210)
at org.jgroups.protocols.Discovery.up(Discovery.java:281)
 at org.jgroups.protocols.PING.up(PING.java:67)
at org.jgroups.protocols.TP.passMessageUp(TP.java:1009)
 at org.jgroups.protocols.TP.access$100(TP.java:56)
at org.jgroups.protocols.TP$IncomingPacket.handleMyMessage(TP.java:1549)
 at org.jgroups.protocols.TP$IncomingPacket.run(TP.java:1526)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
 at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)


-- 
*Chamara Ariyarathne*
Software Engineer - QA;
WSO2 Inc; http://www.wso2.com/.
Mobile; *0772786766*
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