PM10882: DUPLICATEKEYEXCEPTION WHEN TRYING TO WRITE DATA TO MAP NAME OBJECTGRID.SESSION.METADATA.

PM12076; 7.0: the eXtreme Scale http session code getting into a bad state

APAR status

• Closed as program error.

Error description

• When an application contains nested doFilter calls, the user can
  see DuplicateKeyException when trying to write data to map name
  objectgrid.session.metadata.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of WebSphere eXtreme Scale        *
  *                  Version 7.0 who are using the HTTP session  *
  *                  replication support.                        *
  ****************************************************************
  * PROBLEM DESCRIPTION: A DuplicateKeyException exception       *
  *                      results when a Web application updates  *
  *                      objectgrid.session.metadata map.        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Certain Web applications make nested requests to different
  servlets using the same session.  Nested calls to the
  getSession method should return the HTTP session that was
  created in the first request, but the eXtreme Scale HTTP
  session filter attempted
  to create a new HTTP session on each of the nested requests.
  Because these requests shared the same session
  ID, a DuplicateKeyException exception resulted.
  

Problem conclusion

• The WebSphere eXtreme Scale HTTP session replication was
  corrected to process nested Web application requests in the
  proper order.
  

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