IV26348: MULTITHREADED MARSHALLING TEST ON CALENDAR CLASS LEADS TO CLASSC ASTEXCEPTION

APAR status

• Closed as program error.

Error description

• Error Message: Mulithreaded marshalling tests of
  java.util.GregorianCalendar class leads to ClassCastException
  .
  Stack Trace: Exception in thread "Thread-39"
  java.lang.ClassCastException: java.util.SimpleTimeZone
  incompatible with sun.util.calendar.ZoneInfo
   at java.util.Calendar$1.run(Calendar.java:2664)
   at java.util.Calendar$1.run(Calendar.java:2662)
   at
  java.security.AccessController.doPrivileged(AccessController.jav
  a:288)
   at java.util.Calendar.readObject(Calendar.java:2661)
   at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
   at
  sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod
  AccessorImpl.java:37)
   at java.lang.reflect.Method.invoke(Method.java:611)
   at
  java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.jav
  a:1044)
   at
  java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:
  1866)
   at
  java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.j
  ava:1770)
   at
  java.io.ObjectInputStream.readObject0(ObjectInputStream.java:134
  6)
   at
  java.io.ObjectInputStream.readObject(ObjectInputStream.java:365)
   at
  sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:318)
   at
  sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:3
  07)
   at sun.rmi.transport.Transport$1.run(Transport.java:171)
   at
  java.security.AccessController.doPrivileged(AccessController.jav
  a:288)
   at sun.rmi.transport.Transport.serviceCall(Transport.java:167)
   at
  sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.j
  ava:547)
   at
  sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTra
  nsport.java:802)
   at
  sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTran
  sport.java:661)
   at
  java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoo
  lExecutor.java:897)
   at
  java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExe
  cutor.java:919)
   at java.lang.Thread.run(Thread.java:737)
   at
  sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(S
  treamRemoteCall.java:267)
   at
  sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.
  java:245)
   at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:154)
   at
  MyRemoteRMIImpl_Stub.echoObject(MyRemoteRMIImpl_Stub.java:32)
   at MyRMIClient$Load.echoTest(MyRMIClient.java:68)
   at MyRMIClient$Load.run(MyRMIClient.java:56)
   at java.lang.Thread.run(Thread.java:737)
  .
  

Local fix

• N/A
  

Problem summary

• The problem was caused because the de-serialization of Calendar
  class wasn't thread safe.
  

Problem conclusion

• This defect will be fixed in:
  6.0.0 SR12
  7.0.0 SR3
  6.0.1 SR4
  .
  The JDK has been updated to make the de-serialization of
  Calendar class to be synchronized to prevent this problem.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  JAVA CLASS LIBS

• Fixed component ID

  620700130

Applicable component levels

• R600 PSY

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