mesos/spark — pull request #286 by JoshRosen (2012-10-19 00:00:25+00:00)
Title: Allow EC2 script to stop/destroy cluster after master/slave failures

This commit solves a problem where `spark-ec2` could not destroy or stop a cluster if its master or all of its slaves had been destroyed.

It also prints the total count of master and slave nodes before printing error messages.