[infinispan-dev] Weird ClassCastException ..

[Sanne Grinovero]

Hi Dennis,
thanks for the ideas! but that's not possible. This is a single unit
test, run from a flat classpath, bound to localhost and no other JVMs
running on the same machine.
The only thing making "special" is that it's a rather long stress
test, it loops at high speed for at least 10 minutes before such
exceptions are thrown.
I suspect the stream is somehow corrupted under load, getting it to
invoke the wrong unmarshaller combination.

On 5 August 2014 05:06, Dennis Reed <dereed at redhat.com> wrote:
> It looks like the data was written by a different version of
> PutKeyValueCommand than is trying to read it.
>
> Make sure you're not mixing ISPN versions in the cluster and/or
> accidentally clustering with another instance outside your test?
>
> -Dennis
>
> On 08/04/2014 06:33 PM, Sanne Grinovero wrote:
>> I'm (rarely) seeing this exception in one of my stress tests.. any
>> clue about what could be wrong?
>> I reported a similar one approx a year ago, in that case it was a
>> value type being unmarshalled as an instance of Class (was also never
>> resolved).
>>
>> 2014-08-05 00:22:29,521 WARN  [CommandAwareRpcDispatcher]
>> (OOB-1,main-NodeD-22196) ISPN000220: Problems un-marshalling remote
>> command from byte buffer
>> java.lang.ClassCastException: java.lang.String cannot be cast to
>> org.infinispan.metadata.Metadata
>> at org.infinispan.commands.write.PutKeyValueCommand.setParameters(PutKeyValueCommand.java:114)
>> at org.infinispan.commands.RemoteCommandsFactory.fromStream(RemoteCommandsFactory.java:138)
>> at org.infinispan.marshall.exts.ReplicableCommandExternalizer.readObject(ReplicableCommandExternalizer.java:85)
>> at org.infinispan.marshall.exts.ReplicableCommandExternalizer.readObject(ReplicableCommandExternalizer.java:1)
>> at org.infinispan.marshall.core.ExternalizerTable$ExternalizerAdapter.readObject(ExternalizerTable.java:409)
>> at org.infinispan.marshall.core.ExternalizerTable.readObject(ExternalizerTable.java:214)
>> at org.infinispan.marshall.core.JBossMarshaller$ExternalizerTableProxy.readObject(JBossMarshaller.java:148)
>> at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:351)
>> at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)
>> at org.jboss.marshalling.AbstractObjectInput.readObject(AbstractObjectInput.java:41)
>> at org.infinispan.marshall.exts.ReplicableCommandExternalizer.readParameters(ReplicableCommandExternalizer.java:101)
>> at org.infinispan.marshall.exts.CacheRpcCommandExternalizer.readObject(CacheRpcCommandExternalizer.java:153)
>> at org.infinispan.marshall.exts.CacheRpcCommandExternalizer.readObject(CacheRpcCommandExternalizer.java:1)
>> at org.infinispan.marshall.core.ExternalizerTable$ExternalizerAdapter.readObject(ExternalizerTable.java:409)
>> at org.infinispan.marshall.core.ExternalizerTable.readObject(ExternalizerTable.java:214)
>> at org.infinispan.marshall.core.JBossMarshaller$ExternalizerTableProxy.readObject(JBossMarshaller.java:148)
>> at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:351)
>> at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)
>> at org.jboss.marshalling.AbstractObjectInput.readObject(AbstractObjectInput.java:41)
>> at org.infinispan.commons.marshall.jboss.AbstractJBossMarshaller.objectFromObjectStream(AbstractJBossMarshaller.java:135)
>> at org.infinispan.marshall.core.VersionAwareMarshaller.objectFromByteBuffer(VersionAwareMarshaller.java:101)
>> at org.infinispan.commons.marshall.AbstractDelegatingMarshaller.objectFromByteBuffer(AbstractDelegatingMarshaller.java:80)
>> at org.infinispan.remoting.transport.jgroups.MarshallerAdapter.objectFromBuffer(MarshallerAdapter.java:28)
>> at org.infinispan.remoting.transport.jgroups.CommandAwareRpcDispatcher.handle(CommandAwareRpcDispatcher.java:204)
>> at org.jgroups.blocks.RequestCorrelator.handleRequest(RequestCorrelator.java:460)
>> at org.jgroups.blocks.RequestCorrelator.receiveMessage(RequestCorrelator.java:377)
>> at org.jgroups.blocks.RequestCorrelator.receive(RequestCorrelator.java:250)
>> at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:674)
>> at org.jgroups.JChannel.up(JChannel.java:733)
>> at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:1030)
>> at org.jgroups.protocols.RSVP.up(RSVP.java:190)
>> at org.jgroups.protocols.FRAG2.up(FRAG2.java:165)
>> at org.jgroups.protocols.FlowControl.up(FlowControl.java:390)
>> at org.jgroups.protocols.tom.TOA.up(TOA.java:121)
>> at org.jgroups.protocols.pbcast.GMS.up(GMS.java:1041)
>> at org.jgroups.protocols.pbcast.STABLE.up(STABLE.java:234)
>> at org.jgroups.protocols.UNICAST3.deliverMessage(UNICAST3.java:1034)
>> at org.jgroups.protocols.UNICAST3.handleDataReceived(UNICAST3.java:752)
>> at org.jgroups.protocols.UNICAST3.up(UNICAST3.java:399)
>> at org.jgroups.protocols.pbcast.NAKACK2.up(NAKACK2.java:610)
>> at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:297)
>> at org.jgroups.protocols.Discovery.up(Discovery.java:245)
>> at org.jgroups.protocols.TP.passMessageUp(TP.java:1551)
>> at org.jgroups.protocols.TP$MyHandler.run(TP.java:1770)
>> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>> at java.lang.Thread.run(Thread.java:745)
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