Hi Experts,

     We are trying to start multiple JBoss nodes simultaneously that are to join a cluster , by calling the run batch files for all the nodes, from a single batch file.

     While the nodes are started simultaneously , one of the node's console listed the ERROR :-

15:04:30,860 INFO  [DfsPartition] Number of cluster members: 3
15:04:30,864 INFO  [DfsPartition] Other members: 2
15:04:30,864 INFO  [DfsPartition] Fetching state (will wait for 30000 millisecon
ds):
15:04:30,926 ERROR [DfsPartition] _add failed
java.lang.NullPointerException
        at org.jboss.ha.framework.server.DistributedReplicantManagerImpl._add(Di
stributedReplicantManagerImpl.java:622)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.jgroups.blocks.MethodCall.invoke(MethodCall.java:330)
        at org.jboss.ha.framework.server.HAPartitionImpl.handle(HAPartitionImpl.
java:1126)
        at org.jgroups.blocks.RequestCorrelator.handleRequest(RequestCorrelator.
java:654)
        at org.jgroups.blocks.RequestCorrelator.receiveMessage(RequestCorrelator
.java:544)
        at org.jgroups.blocks.RequestCorrelator.receive(RequestCorrelator.java:3
67)
        at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispat
cher.java:777)
        at org.jgroups.JChannel.up(JChannel.java:1091)
        at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:382)
        at org.jgroups.stack.ProtocolStack.receiveUpEvent(ProtocolStack.java:398
)
        at org.jgroups.stack.Protocol.passUp(Protocol.java:520)
        at org.jgroups.protocols.pbcast.STATE_TRANSFER.up(STATE_TRANSFER.java:15
8)
        at org.jgroups.stack.Protocol.receiveUpEvent(Protocol.java:470)
        at org.jgroups.stack.Protocol.passUp(Protocol.java:520)
        at org.jgroups.protocols.FRAG2.up(FRAG2.java:197)
        at org.jgroups.stack.Protocol.receiveUpEvent(Protocol.java:470)
        at org.jgroups.stack.Protocol.passUp(Protocol.java:520)
        at org.jgroups.protocols.pbcast.GMS.up(GMS.java:768)
        at org.jgroups.stack.Protocol.receiveUpEvent(Protocol.java:470)
        at org.jgroups.protocols.pbcast.GMS.receiveUpEvent(GMS.java:788)
        at org.jgroups.stack.Protocol.passUp(Protocol.java:520)
        at org.jgroups.protocols.pbcast.STABLE.up(STABLE.java:258)
        at org.jgroups.stack.Protocol.receiveUpEvent(Protocol.java:470)
        at org.jgroups.stack.Protocol.passUp(Protocol.java:520)
        at org.jgroups.protocols.UNICAST.up(UNICAST.java:259)
        at org.jgroups.stack.Protocol.receiveUpEvent(Protocol.java:470)
        at org.jgroups.stack.Protocol.passUp(Protocol.java:520)
        at org.jgroups.protocols.pbcast.NAKACK.handleMessage(NAKACK.java:685)
        at org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:517)
        at org.jgroups.stack.Protocol.receiveUpEvent(Protocol.java:470)
        at org.jgroups.stack.Protocol.passUp(Protocol.java:520)
        at org.jgroups.protocols.VERIFY_SUSPECT.up(VERIFY_SUSPECT.java:170)
        at org.jgroups.stack.Protocol.receiveUpEvent(Protocol.java:470)
        at org.jgroups.stack.Protocol.passUp(Protocol.java:520)
        at org.jgroups.protocols.FD.up(FD.java:300)
        at org.jgroups.stack.Protocol.receiveUpEvent(Protocol.java:470)
        at org.jgroups.stack.Protocol.passUp(Protocol.java:520)
        at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:301)
        at org.jgroups.stack.Protocol.receiveUpEvent(Protocol.java:470)
        at org.jgroups.stack.Protocol.passUp(Protocol.java:520)
        at org.jgroups.protocols.MERGE2.up(MERGE2.java:162)
        at org.jgroups.stack.Protocol.receiveUpEvent(Protocol.java:470)
        at org.jgroups.stack.Protocol.passUp(Protocol.java:520)
        at org.jgroups.protocols.Discovery.up(Discovery.java:225)
        at org.jgroups.stack.Protocol.receiveUpEvent(Protocol.java:470)
        at org.jgroups.stack.Protocol.passUp(Protocol.java:520)
        at org.jgroups.protocols.TP.handleIncomingMessage(TP.java:908)
        at org.jgroups.protocols.TP.handleIncomingPacket(TP.java:850)
        at org.jgroups.protocols.TP.access$400(TP.java:45)
        at org.jgroups.protocols.TP$IncomingPacketHandler.run(TP.java:1296)
        at java.lang.Thread.run(Thread.java:595)
15:04:31,212 INFO  [DfsPartition] state was retrieved successfully (in 345 milli
seconds)

Kindly let me know , why we got that error ?

And how to resolve this issue !!

Thanks & Regards

Saswata Mandal.