PM02849: CONCURRENTMODIFICATIONEXCEPTION ERROR MAY OCCUR DURING JAX-WS HANDLER PROCESSING

APAR status

• Closed as program error.

Error description

• While running a JAX-WS application a
  ConcurrentModificationException error may occur.
  .
  Here is an example error:
  
  java.util.ConcurrentModificationException
  at
  java.util.AbstractList$Itr.checkForComodification(AbstractList.j
  ava:464)
  at java.util.AbstractList$Itr.next(AbstractList.java:435)
  at
  org.apache.axis2.jaxws.core.controller.InvocationController.regi
  sterUnderstoodHeaders(InvocationController.java:168)
  at
  org.apache.axis2.jaxws.core.controller.InvocationController.invo
  ke(InvocationController.java:117)
  ..
  

Local fix

• N/A.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  IBM WebSphere Application Server Feature    *
  *                  Pack for Web Services users of JAX-WS web   *
  *                  services.                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: A ConcurrentModificationException       *
  *                      error may occur while running a         *
  *                      JAX-WS application.                     *
  ****************************************************************
  * RECOMMENDATION:  Install a fixpack containing this APAR.     *
  ****************************************************************
  While running a JAX-WS application a
  ConcurrentModificationException error may occur.
  .
  Here is an example error:
  
  java.util.ConcurrentModificationException
  at
  java.util.AbstractList$Itr.checkForComodification(AbstractList.j
  ava:464)
  at java.util.AbstractList$Itr.next(AbstractList.java:435)
  at
  org.apache.axis2.jaxws.core.controller.InvocationController.regi
  sterUnderstoodHeaders(InvocationController.java:168)
  at
  org.apache.axis2.jaxws.core.controller.InvocationController.invo
  ke(InvocationController.java:117)
  ..
  
  This problem may occur if multiple JAX-WS clients are running
  in the same Java Virtual Machine and all of the clients use
  the same JAX-WS handler list.
  

Problem conclusion

• The JAX-WS runtime sorts the handler chain.  If
  multiple clients are using the same chain, a
  ConcurrentModificationException error may occur.
  
  The JAX-WS runtime is changed to use a copy of the handler
  chain in the code that sorts the handler chain.  This change
  avoids the error.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 6.1.0.31.  Please refer to the Recommended Updates
  page for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

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:

  PM02921

Fix information

• Fixed component name

  WEBSERVIC FEATU

• Fixed component ID

  5724J0850

Applicable component levels

• R610 PSY

     UP