7 Replies Latest reply on May 25, 2006 3:23 PM by clebert.suconic

    ClassNotFoundException when deserializing an array type that

    mattintx
    mattintx May 17, 2006 9:42 AM

      I'm attempting to use JBoss serialization for some work I'm doing right now to record and playback method executions. This means I record all the input parms, and the return values. For the most part JBoss Serialization has been a working drop-in replacement for Java serialization (great job for a 1.0 release!). However, I'm now encountering a peculiar bug which I'm hoping you'll be able to help me with. Here it is.

      This bug happens when I start a JVM, serialize the an object containing an Array, stop that JVM, start a new JVM, and try to deserialize the object. I get a ClassNotFound exception. I've narrowed it down to a specific line of code (annotated below with a comment) which causes the error, and it ONLY happens the serial/deserial are executed in independent VM's. This makes me think there is (1) JBoss serialization internal state (cache?) that is affecting the behavior and (2) possibly a bug serializing arrays specified a certain way. I've checked out the latest code from jboss cvs and built a current jboss-serialization.jar to make sure this isn't a bug that's already been fixed.

      Here's the test code I'm using. You'll have to manually run some of the test methods in a specific order (and in seperate vm's) in order to see the bug manifest. It's documented in a comment.

      Notice the only difference between what can be successfully serialized and deserialized in seperate VM's is the following line:

      IA as[] = new IA[] { a }; //works

      vs.

      A as[] = new A[] { a }; //breaks it

      Cleburt, I'm e-mailing you the full test case zip file so you can attach it to a JIRA issue if need be. I don't see an attach function in this forum software.




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