PM96106: A segmentation fault is seen when using TTL eviction with asynchronous replication.

APAR status

• Closed as program error.

Error description

• A segmentation fault is seen when using TTL eviction with
  asynchronous replication.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  WebSphere eXtreme Scale customers who use   *
  *                  the TTL eviction feature and the eXtreme    *
  *                  memory feature with an asynchronous         *
  *                  replication topology are affected by this   *
  *                  problem.                                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: During system load, an eXtreme Scale    *
  *                      container server might fail             *
  *                      unexpectedly with a reported            *
  *                      segmentation fault.                     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A segmentation fault is seen when using TTL eviction with
  asynchronous replication. The automatically generated Javacore
  file indicates that the error occurred while the current
  thread was executing code from the
  com.ibm.ws.objectgrid.io.offheap.impl.XsOffHeapEvictionDataImpl
  class.
  

Problem conclusion

• To prevent the segmentation fault, reference handling logic
  was encapsulated to internal wrapper classes.
  

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

• R860 PSY

     UP