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Re: rmi problems with latest visad.jar

  • To: Doug Lindholm <lind@xxxxxxxx>
  • Subject: Re: rmi problems with latest visad.jar
  • From: Doug Lindholm <lind@xxxxxxxx>
  • Date: Thu, 14 Aug 2003 15:34:50 -0600
Hi,
I've managed to reproduce the problem with a modification of one of the Test examples. If you add the following line to Test56 around line 90 

  histogram_ref.getData().local();
and run 55 then 56 you'll see a related exception with the latest visad.jar. It works with an older version. Did some class lose it's Serializable implementation? 

Thanks,
Doug

Doug Lindholm wrote:
Yes, indeed. The very same visad.jar, in fact, since my client and server are running on the same machine in this case. 

Thanks,
Doug

Tom Rink wrote:


Hi Doug,

Are the client and server both using the same version of visad.jar?

TomR

Doug Lindholm wrote:


Hi,
When I switched to the latest visad.jar file I started getting exceptions like below. It works fine with an older version of visad.jar. I have been careful to make sure the rmiregistry, server, and client are all running with the same classpath. I have a RemoteServerImpl (with RemoteDataReferenceImpls) bound to my server but when I try to access the data from my client:
java.rmi.UnmarshalException: error unmarshalling return; nested exception is: java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: java.lang.Object 
        at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:164)
        at visad.RemoteFieldImpl_Stub.local(Unknown Source)
at edu.ucar.rap.vmet.VMETDisplayer.getSourceData(VMETDisplayer.java:700) at edu.ucar.rap.vmet.GriddedDisplayer.processData(GriddedDisplayer.java:135) at edu.ucar.rap.vmet.VMETDisplayer.updateData(VMETDisplayer.java:1229) at edu.ucar.rap.vmet.VMETDisplayer$UpdateCell.doAction(VMETDisplayer.java:1154) 
        at visad.ActionImpl.run(ActionImpl.java:353)
        at visad.util.ThreadPool$ThreadMinnow.run(ThreadPool.java:95)
Caused by: java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: java.lang.Object at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1268) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1830) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1756) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1636) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1264) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1593) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1261) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1830) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1756) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1636) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1264) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:322) 
        at sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:297)
        at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:146)
        ... 7 more
Caused by: java.io.NotSerializableException: java.lang.Object
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1054) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1330) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1302) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1245) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052) at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1224) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1050) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1330) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1302) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1245) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278) 
        at sun.rmi.server.UnicastRef.marshalValue(UnicastRef.java:265)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:271) 
        at sun.rmi.transport.Transport$1.run(Transport.java:148)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701) 
        at java.lang.Thread.run(Thread.java:536)


Any ideas?

Thanks,
Doug









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