Hi all,
when running ESB
Sample 57: Dynamic load balancing between 3
nodes<http://docs.wso2.org/display/ESB480/Sample+57%3A+Dynamic+load+balancing+between+3+nodes>
I cannot seem to configure the cluster properly. I have edited the
axis2.xml and set both mcastBindAddress , localMemberHost to 127.0.0.1 and
enabled clustering. After running the ESB in the specific setup It does not
communicate with the cluster.
This is the Error that is logged
[2013-12-09 13:44:20,004] ERROR - NativeWorkerPool Uncaught exception
java.lang.NullPointerException
at
org.apache.synapse.core.axis2.Axis2LoadBalanceMembershipHandler.getNextApplicationMember(Axis2LoadBalanceMembershipHandler.java:92)
at
org.apache.synapse.endpoints.DynamicLoadbalanceEndpoint.send(DynamicLoadbalanceEndpoint.java:157)
at
org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:95)
at
org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:71)
at
org.apache.synapse.mediators.filters.InMediator.mediate(InMediator.java:55)
at
org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:71)
at
org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
at
org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:199)
at
org.apache.synapse.core.axis2.SynapseMessageReceiver.receive(SynapseMessageReceiver.java:83)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at
org.apache.synapse.transport.passthru.ServerWorker.processEntityEnclosingRequest(ServerWorker.java:404)
at
org.apache.synapse.transport.passthru.ServerWorker.run(ServerWorker.java:184)
at
org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
What coulld be the problem? Do I have to configure the ESB in some way?
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