Error in BlazeDS 4 clustering (jgroups 2.4.1)

Question

Hi,
I'm trying to upgrade from BlazeDS 3.2 to BlazeDS 4 with clustering jgroups configuration jgroups (2.4.1)
Here's my jgroups-tcp.xml file :
jgroups-tcp.xml
<config>
<TCP bind_addr="server1" start_port="8080" loopback="true" enable_diagnostics="false" />
<TCPPING timeout="3000" initial_hosts="server1[8080], server1[8080]" port_range="3" num_initial_members="2" />
<MERGE2 min_interval="10000" max_interval="20000" />
<FD timeout="6000" max_tries="4" />
<VERIFY_SUSPECT timeout="1500" down_thread="false" up_thread="false" />
<pbcast.NAKACK gc_lag="100" retransmit_timeout="600,1200,2400,4800" />
<pbcast.STABLE stability_delay="1000" desired_avg_gossip="20000" down_thread="false" max_bytes="0" up_thread="false" />
<pbcast.GMS print_local_addr="true" join_timeout="5000" join_retry_timeout="2000" shun="true" />
</config>
when I'm starting server2,  I'm getting following error (witch i don't have with BlazeDS 3.2 ):
Catalina.out
BlazeDS]09/03/2010 14:53:59.600 Error handling message pushed from cluster: java.lang.ClassCastException: org.jgroups.stack.IpAddress cannot be cast to java.lang.String
Exception=java.lang.ClassCastException: org.jgroups.stack.IpAddress cannot be cast to java.lang.String
        at flex.messaging.services.messaging.SubscriptionManager.getMessageClient(SubscriptionManage r.java:736)
        at flex.messaging.services.messaging.SubscriptionManager.addSubscriber(SubscriptionManager.j ava:453)
        at flex.messaging.services.messaging.SubscriptionManager.addSubscriber(SubscriptionManager.j ava:438)
        at flex.messaging.services.MessageService.subscribeFromPeer(MessageService.java:822)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at flex.messaging.cluster.JGroupsCluster$ServiceOperationHandler.handleBroadcast(JGroupsClus ter.java:797)
        at flex.messaging.cluster.JGroupsCluster.handle(JGroupsCluster.java:560)
        at org.jgroups.blocks.MessageDispatcher.handle(MessageDispatcher.java:608)
        at org.jgroups.blocks.RequestCorrelator.handleRequest(RequestCorrelator.java:650)
        at org.jgroups.blocks.RequestCorrelator.receiveMessage(RequestCorrelator.java:535)
        at org.jgroups.blocks.RequestCorrelator.receive(RequestCorrelator.java:358)
        at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:775)
        at org.jgroups.JChannel.up(JChannel.java:1091)
        at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:377)
        at org.jgroups.stack.ProtocolStack.receiveUpEvent(ProtocolStack.java:393)
        at org.jgroups.stack.Protocol.passUp(Protocol.java:538)
        at org.jgroups.protocols.pbcast.GMS.up(GMS.java:771)
        at org.jgroups.stack.UpHandler.run(Protocol.java:60)
I know there is an existing issue(but I don't know it) in LDCS (june 2010) but I don't see anything about Blaze DS...
What's possible to do?
Best Regards
Tehem

Answer 1

Hi Techies,
I got resolved this reported issue on blazeds.
The issue was in the BlazeDS version 4.0.0.14931. To point out exactly, the jar file which had this issue in was flex-messaging-core.jar
You can download the latest blazeds version "4.0.1.21287" from the below mentioned link and use the flex-messaging-core.jar. This version has the classcast exception issue fixed while casting org.jgroups.stack.IpAddress to string in "SubscriptionManager.java:736"
http://flexorg.wip3.adobe.com/blazeds/4.x/21287/blazeds-bin-4.0.1.21287.zip
Regards
Balamurugan