How can a function access Executor ID, Function ID and other parameters

I am running on a 15 node cluster and am trying to set partitioning to balance the work across all nodes. I am using an Accumulator to track work by Mac Address but would prefer to use data known to the Spark environment - Executor ID, and Function ID show up in the Spark UI and Task ID and

How can a function access Executor ID, Function ID and other parameters known to the Spark Environment

I am running on a 15 node cluster and am trying to set partitioning to balance the work across all nodes. I am using an Accumulator to track work by Mac Address but would prefer to use data known to the Spark environment - Executor ID, and Function ID show up in the Spark UI and Task ID and