PI69125: WXS ContinuousQueryListener in client does not get update from server after server restart

APAR status

• Closed as program error.

Error description

• In the event that WXS servers are restarted but clients
  remain running, ContinuousQueryListener on the clients no
  longer get updates from servers after the servers restart.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  IBM WebSphere eXtreme Scale users who have  *
  *                  client applications that use the            *
  *                  Continuous Query feature.                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: ContinuousQueryListeners on clients     *
  *                      do not get updates on the query         *
  *                      result after servers restart.           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  While servers are restarting, shards have to be moved around
  in order to achieve a balanced placement.  The client code had
  some flaws on how reconnecting to servers is handled, while
  lots of shard movements are happening at the same time.  The
  server code also did not pass along the client security
  context while passing the ContinuousQuery client subscription
  request to the new primary shard.
  

Problem conclusion

• Both ContinuousQuery client and server code are now fixed.
  

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

• R861 PSY

     UP