The Replication Applier Metrics component implements two Performance Schema tables, listed here:
- replication_applier_metrics: Shows statistics for the replication applier, for a given replication channel.
- replication_applier_progress_by_worker: Shows statistics for the replication applier, for the worker with the given ID and channel name.
- Purpose: Provide replication applier statistics tables in the MySQL Performance Schema. 
- URN: - file://component_replication_applier_metrics
For installation instructions, see Section 7.5.1, “Installing and Uninstalling Components”.
This component was added in MySQL 9.1.0, and is available only as part of MySQL Enterprise Edition.
          The replication_applier_metrics component
          does not function when
          replica_parallel_workers=0.