This section describes Spark-related procedures that are required for configuration changes in KPI Management.

Updating the Spark Cluster- or Application Configuration

Stop the KPI Management workflows
Kill the Spark application
Stop the Spark cluster
Make whatever changes are needed
Start the Spark cluster
Submit the Spark application
Start the KPI Management workflows

When you have changed properties in the configuration related to the service model or Kafka, you also need to clear the check-point directory before starting the Spark cluster.

Updating the Kafka or Zookeeper Configuration

Stop KPI Management workflows
Kill the Spark application
Shutdown Spark, Kafka and Zookeeper
Clear all the runtime data.
Update the Kafka and/or Zookeeper configuration
Start Zookeeper, Kafka and Spark
Submit the Spark application
Start the KPI Management workflows