I am using datafame.checkpoint(). I'd like to set spark.cleaner.referenceTracking.cleanCheckpoints to true. When I use spark.conf.set('spark.cleaner.referenceTracking.cleanCheckpoints', 'true'), I got "Cannot modify the value of a Spark config: spark.cleaner.referenceTracking.cleanCheckpoints". Why is it so? What's the default value for spark.cleaner.referenceTracking.cleanCheckpoints in Databricks?


)?. This can be beneficial to other community members. Thank you.