java.lang.ClassCastException: org.jgroups.stack.ProtocolStack cannot be cast to org.jgroups.protocols.TP

[Sagar-Singari]

Hi @belaban

I keep getting errors while trying to upgrade from 3.3.3 to 3.6.10. Now, I'm getting this error:
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.informatica.b2b.MftServerBootstrap.main(MftServerBootstrap.java:92)
Caused by: java.lang.ClassCastException: org.jgroups.stack.ProtocolStack cannot be cast to org.jgroups.protocols.TP
at org.jgroups.stack.ProtocolStack.getTransport(ProtocolStack.java:252)
at org.jgroups.JChannel.stopStack(JChannel.java:1010)
at org.jgroups.JChannel._close(JChannel.java:989)
at org.jgroups.JChannel.close(JChannel.java:385)
at com.linoma.dpa.jgroups.ClusterManager.close(ClusterManager.java:560)
at com.linoma.startup.TomcatStarter.start(TomcatStarter.java:302)

Here's my Protocol stack:
channel = new JChannel(false);
channel.setName(SystemInfo.getName());
channel.enableStats(false);
ProtocolStack stack = new ProtocolStack();
stack.enableStats(false);
channel.setProtocolStack(stack);

            stack.addProtocol(getTCPProtocol());
                if (initialMembers != null) {
            stack.addProtocol(getTCPPingProtocol());
                                                          }
	stack.addProtocol(getFDSockProtocol());
	stack.addProtocol(getFDAllProtocol());
	stack.addProtocol(getVerifySuspectProtocol());
	stack.addProtocol(getNakack2Protocol());
	stack.addProtocol(getUnicast3Protocol());
	stack.addProtocol(getCentralLockProtocol());
	stack.addProtocol(getStableProtocol());
	stack.addProtocol(getAuthProtocol());
	stack.addProtocol(getGMSProtocol());
	stack.addProtocol(getUfcProtocol());
	stack.addProtocol(getMfcProtocol());
	stack.addProtocol(getEncryptProtocol());
	stack.addProtocol(getFrag2Protocol());
    
	stack.init();
	channel.setDiscardOwnMessages(true);

	dispatcher = new MessageDispatcher(channel, null,
			new ClusterMembershipListener(), new ClusterMessageReceiver());

	lockService = new LockService(channel);

	channel.connect(ClusterConstants.CLUSTER_NAME);

Can you please help on this.
Thanks.

[belaban]

Do you have a reproducer that compiles under 3.6? Looks as if the transport is not of type TP...

[johnou]

@bobsag sounds like you have multiple versions of jgroups on your classpath.

[johnou]

You might try forcing a specific version in your project dependency management configuration.

[Sagar-Singari]

@johnou
I already checked that, I'm using only a single version in classpath & also the same version is on the different instances on the cluster.

Thanks for your response!

[johnou]

Can you share the function close? com.linoma.dpa.jgroups.ClusterManager.close

[Sagar-Singari]

@johnou
Here you go:
public void close() {
ViewChangeRuntime.getInstance().shutdown();
if (dispatcher != null || channel != null) {
LOGGER.info(ClusterManagerMessages.getBundleString("info.clusterCloseStart"));
if (channel != null) {
channel.close();
channel = null;
}
if (dispatcher != null) {
dispatcher.stop();
dispatcher = null;
}
LOGGER.info(ClusterManagerMessages.getBundleString("info.clusterCloseStop"));
}
}