Once we are done developing on our cluster, it is ideal to shut it down and preserve resources.
Stopping a Spark cluster
How to do it...
This section walks through the steps to stop the SparkSession.
- Execute the following script:
spark.stop()
- Confirm that the session has closed by executing the following script:
sc.master
How it works...
This section explains how to confirm that a Spark cluster has been shut down.
- If the cluster has been shut down, you will receive the error message seen in the following screenshot when executing another Spark command in the notebook:
There's more...
Shutting down Spark clusters may not be as critical when working in a local environment; however, it will prove costly when Spark is deployed in a cloud environment where you are charged for compute power.