You can abort a long-running checkpoint or cluster reconfiguration operation by exiting from the command line utility.
The cluster will be restored to its state prior to attempting the checkpoint or topology reconfiguration.
In the case of a checkpoint operation, the utility sends a “checkpoint abort” command to the checkpoint coordinator to cleanly abort the checkpoint create/restore operation.
In the case of a cluster reconfiguration, the utility restores the original cluster.nodes file and initiates a soft restart of the affected cluster nodes to restore the cluster to its previous configuration.