PM35900: KEYNOTFOUNDEXCEPTION AND DUPLICATIONKEYEXCEPTION ARE THROWN WHEN USING WEBSPHERE EXTREME SCALE

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

APAR status

• Closed as program error.

Error description

• When using WebSphere eXtreme Scale 7.0 for Http Session
  replication or using the legacy support in v7.1 and calls
  invalidate() on a new HttpSession object, then creates another
  HttpSession object and sets or removes attributes on that
  HttpSession, all in the same request, the user may see
  KeyNotFoundException and DuplicationKeyException.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All eXtreme Scale users that use HTTP       *
  *                  session support.                            *
  ****************************************************************
  * PROBLEM DESCRIPTION: You might see one of the following      *
  *                      exceptions:                             *
  *                      KeyNotFoundException                    *
  *                      or DuplicationKeyException.             *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A combination of calling the invalidate method on an
  HttpSession object and
  setting or removing on a different HttpSession object might
  result in a DuplicatKeyException or KeyNotFoundException
  exception.
  

Problem conclusion

• A fix for this issue will be available in a future
  cumulative
  fix
  pack.
  

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

• R710 PSY

     UP