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PM35054: NULL POINTER EXCEPTION THROWN WHEN USING HTTP SESSION REPLICATION

A fix is available

PM37461; 7.1.0.2: FIX THREAD SAFETY ISSUE WHEN RUNNING SAME QUERY CONCURRENTLY

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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 number
    PM35054
    • 

  • Reported component name
    XD EXTREME SCAL
    • 

  • Reported component ID
    5724J3402
    • 

  • Reported release
    700
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2011-03-17
    • 

  • Closed date
    2011-03-28
    • 

  • Last modified date
    2011-03-28
    • 





    

  • 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
    • 








      
              
                            

              

              [{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSTVLU","label":"WebSphere eXtreme Scale"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            23 September 2020
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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