Issue with "unknown user type 6" on Coherence 3.5.2

Question

Having an issue with a cluster which is running using an internally developed cluster starter tool. This tool, and the associated cluster, all use POF, and upon attempting to connect a non-storing member to the cluster from java, the following exception is raised...
2011-07-11 15:54:58.338/2.469 Oracle Coherence GE 3.5.2/463p2 <Error> (thread=Cluster, member=n/a): This cluster node is
configured to use serializer com.tangosol.io.pof.ConfigurablePofContext {location=application-pof-config.xml}, which ap
pears to be different from the serializer used by Member(Id=1, Timestamp=2011-07-11 15:34:30.779, Address=10.74.82.193:8
088, MachineId=11188, Location=site:INTRANET.BARCAPINT.COM,machine:ldnpsm020006423,process:80976,member:ldnpsm020006423:
cacheserver:1).
java.io.StreamCorruptedException: unknown user type: 6
at com.tangosol.io.pof.PofBufferReader.readAsObject(PofBufferReader.java:3289)
at com.tangosol.io.pof.PofBufferReader.readObject(PofBufferReader.java:2600)
at com.tangosol.io.pof.ConfigurablePofContext.deserialize(ConfigurablePofContext.java:348)
at com.tangosol.coherence.component.util.daemon.queueProcessor.Service.readObject(Service.CDB:4)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid$ServiceConfigMap.readObject(Grid.CDB
:1)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid$MemberConfigResponse.read(Grid.CDB:1
3)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.onNotify(Grid.CDB:123)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.ClusterService.onNotify(ClusterServi
ce.CDB:3)
at com.tangosol.coherence.component.util.Daemon.run(Daemon.CDB:42)
at java.lang.Thread.run(Thread.java:619)
There is no serialiser configured in the cache config, instead we just set tangosol.pof.enabled=true, and set the pof config file to what is seen above. The thing which is very confusing about this error is that unlike other clients which we connect, and in fact the servers they connect to, this client never attempts to load the cache configuration file. The point at which this should happen, prior to pof loading, shows:
2011-07-11 15:54:57.260/1.391 Oracle Coherence GE 3.5.2/463p2 <Info> (thread=Main Thread, member=n/a): Loaded cache conf
iguration from "jar:file:/C:/Program%20Files/Oracle/coherence/3.5.2b463P2/lib/coherence.jar!/reports/report-group.xml"
I have tried every combination of classpath entries I can think of, and no matter what, it never shows an attempt to load the application-cache-config.xml supplied in the startup. Does anyone have any experience with something like this?

Answer 1

I guess your non-storing JAVA code does not specify -Dtangosol.pof.enabled=true and the -Dtangosol.pof.config =<POF file location> on joining the cluster. Post the startup java command and the complete logs.
If application-cache-config is not loaded then coherence-cache-config.xml should be loaded by default and set -Dtangosol.coherence.cacheconfig=<application-cache-config>
Cheers,
NJ