PI20322: ERROR DELETING A DEVICE FROM WORKLIGHT CONSOLE WHEN USING WORKLIGHT CLUSTER (OR WORKLIGHT FARM) TOPOLOGY

Download for IBM Worklight V6.2.0 Fix Pack 1

APAR status

• Closed as program error.

Error description

• The problem is that in Worklight cluster , each node points to a
  shared location database.
  Each (delete device) action in the Worklight console is
  propagated to every node in the cluster simultaneously.
  The first node to delete the device will actually manage to
  access and lock the relevant row in the database and delete it.
  However, the slower nodes also tries to access the device
  database and will not find that database row anymore (was
  removed already) , thus fire an error or locking error (depends
  how fast it was).
  

Local fix

• Device deletion was successful on one node but failed on others.
  The user can ignore the error since eventually the device was
  deleted from the central database.
  To see that , after the error, refresh the Worklight Console
  (F5).
  We mostly dealing here with false error message.
  Another option (not recommended) is to restart that node (will
  force a re-sync with the central Worklight database)
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Worklight server administrators who manage Worklight cluster *
  * or farm.                                                     *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * When administrator enters Worlight Console in a clustered    *
  * environment and switches to Devices tab, some of the action  *
  * may return error message (action failed).                    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * The administrator can ignore the error and refresh the page. *
  ****************************************************************
  

Problem conclusion

• The problem is that only one node succeeded in performing the
  action (and write to the database) while the other nodes in the
  cluster failed.
  An error is presented due to the other nodes failure.
  

Temporary fix

• The administrator can ignore the error as this is a false
  negative situation. The relevant database was updated regardless
  of the error.
  

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

  WORKLIGHT CONSU

• Fixed component ID

  5725I4301

Applicable component levels

• R620 PSY

     UP