PI11556: WebSphere eXtreme Scale dynamic cache performance is slow during when the data grid is disconnected.

APAR status

• Closed as program error.

Error description

• Dynamic cache performance is slow because requests do not fail
  fast enough, and therefore, requests are not routed back to the
  server when the data grid is disconnected.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of the WebSphere eXtreme Scale    *
  *                  dynamic cache provider.                     *
  ****************************************************************
  * PROBLEM DESCRIPTION: While the data grid is disconnected,    *
  *                      requests are not failing fast so that   *
  *                      those requests can be routed to the     *
  *                      server.                                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When the data grid is disconnected from the client (for
  network issues, for example), the data grid should detect this
  disconnection and return "null" from requests quickly and not
  wait for timeouts until the data grid is reconnected. The
  problem is that the client assumed that it was reconnected to
  the data grid. However, the data grid was still disconnected.
  

Problem conclusion

• The code in this area was fixed to detect additional
  exceptions and not to reconnect until the client could
  successfully interact with the data grid again.
  

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

  WS EXTREME SCAL

• Fixed component ID

  5724X6702

Applicable component levels

• R860 PSY

     UP