[infinispan-dev] frequent stack in testsuite

[Dan Berindei]

I don't think it's an externalizer issue, as I also see some
exceptions on the node that generates state:

2011-06-09 18:16:18,250 ERROR
[org.infinispan.remoting.transport.jgroups.JGroupsTransport]
(STREAMING_STATE_TRANSFER-sender-1,Infinispan-Cluster,NodeA-57902)
ISPN00095: Caught while responding to state transfer request
org.infinispan.statetransfer.StateTransferException:
java.util.concurrent.TimeoutException:
STREAMING_STATE_TRANSFER-sender-1,Infinispan-Cluster,NodeA-57902 could
not obtain exclusive processing lock after 10 seconds.  Locks in
question are java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock at a35c90[Read
locks = 1] and java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock at 111fb7f[Unlocked]
        at org.infinispan.statetransfer.StateTransferManagerImpl.generateState(StateTransferManagerImpl.java:177)
        at org.infinispan.remoting.InboundInvocationHandlerImpl.generateState(InboundInvocationHandlerImpl.java:248)
        at org.infinispan.remoting.transport.jgroups.JGroupsTransport.getState(JGroupsTransport.java:585)
        at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.handleUpEvent(MessageDispatcher.java:690)
        at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:771)
        at org.jgroups.JChannel.up(JChannel.java:1484)
        at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:1074)
        at org.jgroups.protocols.pbcast.STREAMING_STATE_TRANSFER$StateProviderHandler.process(STREAMING_STATE_TRANSFER.java:651)
        at org.jgroups.protocols.pbcast.STREAMING_STATE_TRANSFER$StateProviderThreadSpawner$1.run(STREAMING_STATE_TRANSFER.java:580)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
        at java.lang.Thread.run(Thread.java:636)
Caused by: java.util.concurrent.TimeoutException:
STREAMING_STATE_TRANSFER-sender-1,Infinispan-Cluster,NodeA-57902 could
not obtain exclusive processing lock after 10 seconds.  Locks in
question are java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock at a35c90[Read
locks = 1] and java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock at 111fb7f[Unlocked]
        at org.infinispan.remoting.transport.jgroups.JGroupsDistSync.acquireProcessingLock(JGroupsDistSync.java:100)
        at org.infinispan.statetransfer.StateTransferManagerImpl.generateTransactionLog(StateTransferManagerImpl.java:204)
        at org.infinispan.statetransfer.StateTransferManagerImpl.generateState(StateTransferManagerImpl.java:167)
        ... 11 more

I guess we could write an error marker in the stream to prevent the
EOFException on the receiving side, but the end result would be the
same.

Dan


On Thu, Jun 9, 2011 at 5:58 PM, Sanne Grinovero <sanne at infinispan.org> wrote:
> Hello all,
> if I happen to look at the console while the tests are running, I see
> this exception popup very often:
>
> 2011-06-09 15:32:18,092 ERROR [JGroupsTransport]
> (Incoming-1,Infinispan-Cluster,NodeB-32230) ISPN00096: Caught while
> requesting or applying state
> org.infinispan.statetransfer.StateTransferException:
> java.io.EOFException: Read past end of file
>        at org.infinispan.statetransfer.StateTransferManagerImpl.applyState(StateTransferManagerImpl.java:333)
>        at org.infinispan.remoting.InboundInvocationHandlerImpl.applyState(InboundInvocationHandlerImpl.java:230)
>        at org.infinispan.remoting.transport.jgroups.JGroupsTransport.setState(JGroupsTransport.java:602)
>        at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.handleUpEvent(MessageDispatcher.java:711)
>        at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:771)
>        at org.jgroups.JChannel.up(JChannel.java:1441)
>        at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:1074)
>        at org.jgroups.protocols.pbcast.STREAMING_STATE_TRANSFER.connectToStateProvider(STREAMING_STATE_TRANSFER.java:523)
>        at org.jgroups.protocols.pbcast.STREAMING_STATE_TRANSFER.handleStateRsp(STREAMING_STATE_TRANSFER.java:462)
>        at org.jgroups.protocols.pbcast.STREAMING_STATE_TRANSFER.up(STREAMING_STATE_TRANSFER.java:223)
>        at org.jgroups.protocols.FRAG2.up(FRAG2.java:189)
>        at org.jgroups.protocols.FC.up(FC.java:479)
>        at org.jgroups.protocols.pbcast.GMS.up(GMS.java:891)
>        at org.jgroups.protocols.pbcast.STABLE.up(STABLE.java:246)
>        at org.jgroups.protocols.UNICAST.handleDataReceived(UNICAST.java:613)
>        at org.jgroups.protocols.UNICAST.up(UNICAST.java:294)
>        at org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:703)
>        at org.jgroups.protocols.VERIFY_SUSPECT.up(VERIFY_SUSPECT.java:133)
>        at org.jgroups.protocols.FD.up(FD.java:275)
>        at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:275)
>        at org.jgroups.protocols.MERGE2.up(MERGE2.java:209)
>        at org.jgroups.protocols.Discovery.up(Discovery.java:291)
>        at org.jgroups.protocols.TP.passMessageUp(TP.java:1102)
>        at org.jgroups.protocols.TP$IncomingPacket.handleMyMessage(TP.java:1658)
>        at org.jgroups.protocols.TP$IncomingPacket.run(TP.java:1640)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>        at java.lang.Thread.run(Thread.java:662)
> Caused by: java.io.EOFException: Read past end of file
>        at org.jboss.marshalling.SimpleDataInput.eofOnRead(SimpleDataInput.java:126)
>        at org.jboss.marshalling.SimpleDataInput.readUnsignedByteDirect(SimpleDataInput.java:263)
>        at org.jboss.marshalling.SimpleDataInput.readUnsignedByte(SimpleDataInput.java:224)
>        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)
>        at org.jboss.marshalling.AbstractObjectInput.readObject(AbstractObjectInput.java:37)
>        at org.infinispan.marshall.jboss.GenericJBossMarshaller.objectFromObjectStream(GenericJBossMarshaller.java:192)
>        at org.infinispan.marshall.VersionAwareMarshaller.objectFromObjectStream(VersionAwareMarshaller.java:190)
>        at org.infinispan.statetransfer.StateTransferManagerImpl.processCommitLog(StateTransferManagerImpl.java:230)
>        at org.infinispan.statetransfer.StateTransferManagerImpl.applyTransactionLog(StateTransferManagerImpl.java:252)
>        at org.infinispan.statetransfer.StateTransferManagerImpl.applyState(StateTransferManagerImpl.java:322)
>        ... 27 more
>
> But I'm not sure if it's an issue, as it seems tests are not failing.
> I consider a "Read past end of file" quite suspiciously looking; would
> it be possible to think that some internal Externalizer is writing
> less bytes than what it's attempting to read?
> Is there something clever I could do to understand which object the
> marshaller is trying to read when something like this is happening?
> I've found debugging this quite hard.
>
> Also, it doesn't look like our externalizers have a good test
> coverage; They are likely implicitly tested as I assume that nothing
> would work if they aren't, but still it looks like we have no explicit
> tests for them?
>
> Cheers,
> Sanne
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