PM35054: NULL POINTER EXCEPTION THROWN WHEN USING HTTP SESSION REPLICATION

PM37461; 7.1.0.2: FIX THREAD SAFETY ISSUE WHEN RUNNING SAME QUERY CONCURRENTLY
Download WebSphere eXtreme Scale V6.1.0 Fix Pack 5 compatibility fix

APAR status

• Closed as program error.

Error description

• When using WebSphere eXtreme Scale Http Session Replication, the
  following exceptions is thrown:
  
  webapp E com.ibm.ws.webcontainer.webapp.WebApp logServletError
  SRVE0293E: [Servlet Error]-[appServlet]:
  java.lang.NullPointerException
  
  at
  com.ibm.ws.session.store.objectgrid.FragmentedSessionStore.relea
  seSession(FragmentedSessionStore.java:448)
  at
  com.ibm.ws.session.store.objectgrid.ObjectStore.getSession(Objec
  tStore.java:167)
  at
  com.ibm.ws.session.utils.SessionManager.getSessionFromStore(Sess
  ionManager.java:316)
  at
  com.ibm.ws.session.utils.SessionManager.getSession(SessionManage
  r.java:300)
  at
  com.ibm.ws.session.utils.SessionManager.getSession(SessionManage
  r.java:286)
  at
  com.ibm.ws.httpsession.HttpSessionManagerImpl.isRequestedSession
  IDValid(HttpSessionManagerImpl.java:372)
  at
  com.ibm.ws.httpsession.HttpSessionRequestWrapper.isRequestedSess
  ionIdValid(HttpSessionRequestWrapper.java:426)
  at
  javax.servlet.http.HttpServletRequestWrapper.isRequestedSessionI
  dValid(HttpServletRequestWrapper.java:257)
  at
  javax.servlet.http.HttpServletRequestWrapper.isRequestedSessionI
  dValid(HttpServletRequestWrapper.java:257)
  ...
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of WebSphere eXtreme Scale v7.0   *
  *                  who are using ObjectGrid for HTTP session   *
  *                  replication                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: User applications receive a             *
  *                      NullPointerException when               *
  *                      isRequestedSessionIdValid() is called.  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When a user application calls isRequestedSessionIdValid() on
  the HttpServletRequestWrapper object, application can get
  a NullPointerException when the requested session id is invalid.
  

Problem conclusion

• Fix will be provided in a future cumulative ifix.
  

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

  XD EXTREME SCAL

• Fixed component ID

  5724J3402

Applicable component levels

• R700 PSY

     UP