Exception JBREM000200 is thrown at remote-client side if a clustered EJB is called in EAP6

Issue

• After changing a single server, with EJB application, to a cluster, an Exception is logged on the client side but the EJB invocations are working. Is this a wrong configuration?
• There is no LoadBalancing if a client invokes a clustered EJB. Only the initial server is accessed. Why are the other nodes not used as this was done automatically with EAP5 clients?
• How to configure the ejb-client to use a clustered application
• There is an INFO message that the connection can not created to a cluster node. What is the reason for that?

[Server:app-main] INFO  [org.jboss.ejb.client.remoting.RemotingConnectionClusterNodeManager] (ejb-client-cluster-node-connection-creation-4-thread-1) Could not create a connection for cluster node ClusterNode{clusterName='ejb', nodeName='master:app-one', clientMappings=[ClientMapping{sourceNetworkAddress=/0:0:0:0:0:0:0:0, sourceNetworkMaskBits=0, destinationAddress='127.0.0.1', destinationPort=4547}], resolvedDestination=[Destination address=127.0.0.1, destination port=4547]} in cluster ejb: java.lang.RuntimeException: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?

• Why is there an ERROR message (with EAP 6.1.0) if an ejb-client tries to invoke a clustered application?

ERROR org.jboss.remoting.remote.connection> JBREM000200: Remote connection failed: javax.security.sasl.SaslException: Cannot get userid/password [Caused by javax.security.auth.callback.UnsupportedCallbackException]
INFO org.jboss.ejb.client.remoting.RemotingConnectionClusterNodeManager> Could not create a connection for cluster node ClusterNode{clusterName='ejb', nodeName='torvm-perfamp01:smp_svr1', clientMappings=[ClientMapping{sourceNetworkAddress=/0:0:0:0:0:0:0:0, sourceNetworkMaskBits=0, destinationAddress='10.10.10.10', destinationPort=10123}], resolvedDestination=[Destination address=10.10.10.10, destination port=10123]} in cluster ejb
java.lang.RuntimeException: javax.security.sasl.SaslException: Cannot get userid/password [Caused by javax.security.auth.callback.UnsupportedCallbackException]
    at org.jboss.ejb.client.remoting.IoFutureHelper.get(IoFutureHelper.java:91)
    at org.jboss.ejb.client.remoting.ConnectionPool.getConnection(ConnectionPool.java:75)
    at org.jboss.ejb.client.remoting.RemotingConnectionManager.getConnection(RemotingConnectionManager.java:51)
    at org.jboss.ejb.client.remoting.RemotingConnectionClusterNodeManager.getEJBReceiver(RemotingConnectionClusterNodeManager.java:77)
    at org.jboss.ejb.client.ClusterContext$EJBReceiverAssociationTask.call(ClusterContext.java:406)
    at org.jboss.ejb.client.ClusterContext$EJBReceiverAssociationTask.call(ClusterContext.java:380)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
    at java.util.concurrent.FutureTask.run(FutureTask.java:166)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:724)
Caused by: javax.security.sasl.SaslException: Cannot get userid/password [Caused by javax.security.auth.callback.UnsupportedCallbackException]
    at com.sun.security.sasl.ClientFactoryImpl.getUserInfo(ClientFactoryImpl.java:157)
    at com.sun.security.sasl.ClientFactoryImpl.createSaslClient(ClientFactoryImpl.java:94)
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities$1.run(ClientConnectionOpenListener.java:381)
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities$1.run(ClientConnectionOpenListener.java:379)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities.handleEvent(ClientConnectionOpenListener.java:379)
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities.handleEvent(ClientConnectionOpenListener.java:227)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:72)
    at org.xnio.channels.TranslatingSuspendableChannel.handleReadable(TranslatingSuspendableChannel.java:189)
    at org.xnio.channels.TranslatingSuspendableChannel$1.handleEvent(TranslatingSuspendableChannel.java:103)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:72)
    at org.xnio.nio.NioHandle.run(NioHandle.java:90)
    at org.xnio.nio.WorkerThread.run(WorkerThread.java:187)
    at ...asynchronous invocation...(Unknown Source)
    at org.jboss.remoting3.EndpointImpl.doConnect(EndpointImpl.java:270)
    at org.jboss.remoting3.EndpointImpl.connect(EndpointImpl.java:386)
    at org.jboss.ejb.client.remoting.NetworkUtil.connect(NetworkUtil.java:151)
    at org.jboss.ejb.client.remoting.NetworkUtil.connect(NetworkUtil.java:132)
    at org.jboss.ejb.client.remoting.ConnectionPool.getConnection(ConnectionPool.java:73)
    ... 9 more
Caused by: javax.security.auth.callback.UnsupportedCallbackException
    at org.jboss.ejb.client.DefaultCallbackHandler.handle(DefaultCallbackHandler.java:47)
    at com.sun.security.sasl.ClientFactoryImpl.getUserInfo(ClientFactoryImpl.java:136)
    at com.sun.security.sasl.ClientFactoryImpl.createSaslClient(ClientFactoryImpl.java:94)
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities$1.run(ClientConnectionOpenListener.java:381)
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities$1.run(ClientConnectionOpenListener.java:379)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities.handleEvent(ClientConnectionOpenListener.java:379)
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities.handleEvent(ClientConnectionOpenListener.java:227)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:72)
    at org.xnio.channels.TranslatingSuspendableChannel.handleReadable(TranslatingSuspendableChannel.java:189)
    at org.xnio.channels.TranslatingSuspendableChannel$1.handleEvent(TranslatingSuspendableChannel.java:103)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:72)
    at org.xnio.nio.NioHandle.run(NioHandle.java:90)
    at org.xnio.nio.WorkerThread.run(WorkerThread.java:187)