Valid Options: ALL_METRICS, REQUEST_COUNT, REQUEST_DURATION, REQUEST_SIZE, RESPONSE_SIZE, TCP_OPENED_CONNECTIONS, TCP_CLOSED_CONNECTIONS, TCP_SENT_BYTES, TCP_RECEIVED_BYTES, GRPC_REQUEST_MESSAGES, GRPC_RESPONSE_MESSAGES
                                enum:
                                - ALL_METRICS

                                  Valid Options: ALL_METRICS, REQUEST_COUNT, REQUEST_DURATION, REQUEST_SIZE, RESPONSE_SIZE, TCP_OPENED_CONNECTIONS, TCP_CLOSED_CONNECTIONS, TCP_SENT_BYTES, TCP_RECEIVED_BYTES, GRPC_REQUEST_MESSAGES, GRPC_RESPONSE_MESSAGES
                                enum:
                                - ALL_METRICS

*   `tf.data`:
    *   `tf.data` service now supports strict round-robin reads, which is useful
        for synchronous training workloads where example sizes vary. With strict
        round robin reads, users can guarantee that consumers get similar-sized
        examples in the same step.
    *   tf.data service now supports optional compression. Previously data would