PI32944: Dynamic Routing to some application instances might fail when th e application is installed in multiple clusters.

8.5.5.5: WebSphere Application Server V8.5.5 Fix Pack 5
8.5.5.6: WebSphere Application Server V8.5.5 Fix Pack 6
8.5.5.7: WebSphere Application Server V8.5.5 Fix Pack 7
8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21

APAR status

• Closed as program error.

Error description

• When using Dynamic Routing in a collective with the same
  application installed on multiple clusters, requests to the
  application are all routed to members of the same cluster.
  The application instances on other clusters do not receive
  any requests.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server Liberty Profile- Virtual             *
  *                  Enterprise/IM Component                     *
  ****************************************************************
  * PROBLEM DESCRIPTION: Routing to some application instances   *
  *                      might fail when the application is      *
  *                      installed in multiple clusters.         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  In a collective with the same application installed on multiple
  clusters, requests to the application are all routed to members
  of the same cluster. The application instances on other clusters
  do not receive any requests.
  

Problem conclusion

• For all applications in a Liberty profile collective that can be
  routed to, a relationships between the application and its
  clusters must be created. Requests are only routed to cluster
  members where the cluster to application relationship exists.
  In some cases, we were only creating the relationship for the
  first cluster found with the application. This fix makes sure
  that the application to cluster relationship is created for each
  cluster. After this fix is applied, requests will be routed to
  applications on all clusters where the application is
  available.
  
  The fix for this APAR is currently targeted for inclusion in fix
  pack 8.5.5.5.  Please refer to the Recommended Updates page for
  delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

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

  LIBERTY PROFILE

• Fixed component ID

  5724J0814

Applicable component levels

• R850 PSY

     UP