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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