MySQL Cluster Manager 8.0 Release Notes
        
This section covers MySQL Cluster Manager issues relating to limitations in SQL and other syntax.
Backgrounded commands and error handling. 
        MySQL Cluster Manager client commands that are run in the background (that is,
        when they are invoked with the
        --background or
        -B option) do not issue any error messages in
        the client. If you run a command in the background, you must
        check the agent log or use the show
        status command to verify whether the backgrounded
        command was successful.