SetTerminationProtection locks a cluster (job flow) so the Amazon EC2 instances in the cluster cannot be terminated by user intervention, an API call, or in the event of a job-flow error. The cluster still terminates upon successful completion of the job flow. Calling
SetTerminationProtection on a cluster is similar to calling the Amazon EC2
DisableAPITermination API on all Amazon EC2 instances in a cluster.
SetTerminationProtection is used to prevent accidental termination of a cluster and to ensure that in the event of an error, the instances persist so that you can recover any data stored in their ephemeral instance storage.
To terminate a cluster that has been locked by setting
SetTerminationProtection to
true, you must first unlock the job flow by a subsequent call to
SetTerminationProtection in which you set the value to
false.
For more information, see
Managing Cluster Termination in the
Amazon EMR Management Guide.