PM77856: Reduce synchronization for HTTP sessions that have been retrieved from the remote data grid to eliminate deadlocks.

APAR status

• Closed as program error.

Error description

• LockTimeoutExceptions exceptions can occur during HTTP session
  synchronization due to hangs caused by extra synchronization
  when sessions are retrieved from the remote data grid.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of WebSphere eXtreme Scale using  *
  *                  HTTP session replication.                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: Users with the splicer property,        *
  *                      replicationInterval=0, configured.      *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  LockTimeoutExceptions exceptions might occur in application
  server logs due to hangs caused by extra synchronization when
  sessions are retrieved from the remote data grid.
  

Problem conclusion

• The eXtreme Scale client code has been fixed to avoid
  LockTimeoutExceptions exceptions for the previous use case.
  

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

• R711 PSY

     UP

• R850 PSY

     UP

• R860 PSY

     UP