PI14525: The listener, JMSObjectGridEventListener, fails when running with synchronous replication.

APAR status

• Closed as program error.

Error description

• JMSObjectGridEventListener fails to update clients with the
  following message and exception stack:
  
  CWOBJ0024E: Cannot deserialize field 1241519472 in class
  com.ibm.ws.objectgrid.map.LogSequenceImpl.  Deserialization
  failed.
  
  java.io.IOException:   Invalid stream content (end) for
  Collection of LogSequences.
  at
  com.ibm.ws.objectgrid.map.LogSequenceImpl.inflate(LogSequenceImp
  l.java:3401)
  at
  com.ibm.websphere.objectgrid.plugins.LogSequenceTransformer.infl
  ate(LogSequenceTransformer.java:128)
  at
  com.ibm.websphere.objectgrid.plugins.builtins.JMSObjectGridEvent
  Listener.run(JMSObjectGridEventListener.java:1230)
  at java.lang.Thread.run(Thread.java:773)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of eXtreme Scale who are using    *
  *                  the COPY_TO_BYTES CopyMode with the         *
  *                  JMSObjectGridEventListener with             *
  *                  synchronous replication enabled.            *
  ****************************************************************
  * PROBLEM DESCRIPTION: When deserializing LogSequences with    *
  *                      the JMSObjectGridEventListener, an      *
  *                      IOException exception occurs.           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A logic error for how a LogSequence is serialized when
  using COPY_TO_BYTES prevented the correct data from being
  serialized for a LogSequence object.  When the receiver of the
  serialized LogSequence tried to inflate it, it failed due to
  the format not being what was expected.
  

Problem conclusion

• An interim fix is available for this APAR.
  

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

  WS EXTREME SCAL

• Fixed component ID

  5724X6702

Applicable component levels

• R850 PSY

     UP

• R860 PSY

     UP