Unregister/register process hangs when there are dead nodes in the cluster

Attempting to register Db2® Big SQL with Cloudera Manager or to unregister it fails when there are dead nodes or unreachable worker nodes in the cluster.

Symptoms

When using the Db2 Big SQL cluster administration utility utility to register or unregister Db2 Big SQL, the process hangs while trying to stop Db2 Big SQL.

Resolving the problem

To avoid this issue, use the Db2 Big SQL cluster administration utility to remove any dead nodes before attempting to register Db2 Big SQL with Cloudera Manager or to unregister it.