How to terminate AWS EMR Cluster automatically after some time

I currently have a task at hand to Terminate a long-running EMR cluster after a set period of time (based on some metric). Google Dataproc has this capability in something called "Cluster Scheduled Deletion" Listed here: Cluster Scheduled Deletion

Is this something that is possible on EMR natively? Maybe using Cloudwatch metrics? Or can I write a long-running jar which will sit on the EMR Master node and just poll yarn for some idle time metric and then shut down the cluster after a set period of time?

Edit: For more clarification. I would like some functionality wherein the cluster is terminated based on idle for some x amount of time. e.g. If the cluster has been up for a while but no jobs have been run for say 1 hour and the cluster is just sitting there doing nothing, then I'd like the ability to terminate the cluster.

The easiest method would be used to Amazon EMR Metrics and Dimensions for Amazon CloudWatch. There is an isIdle boolean that "indicates that a cluster is no longer performing work".

You could create a CloudWatch Alarm that says if it is True for more than x minutes, then trigger the alarm. This would send a message to Amazon SNS, which can trigger a Lambda function to shutdown the cluster.

Components:

• Amazon CloudWatch Alarm
• Amazon SNS queue
• AWS Lambda function

Update: This apparently isn't suitable (see comments below).

An alternate method would be:

• Use Amazon CloudWatch Events to schedule a Lambda function every x seconds
• The Lambda function looks for any clusters with a particular tag that indicates how long to wait until shutdown (eg 40 minutes). If the tag is not present, the cluster remains untouched.
• The Lambda function queries the cluster state (somehow -- probably via a Hadoop API call), then:
  • If the cluster is idle and there is no Idle Since tag, add an Idle Since tag with the current timestamp
  • If the cluster is idle and it been more than x minutes since the timestamp in the Idle Since tag, terminate the cluster.
  • If the cluster is not idle, remove the Idle Since tag (if present)