"MySQL General" -> "Process States" show "No datapoints"

  1. can you check share output of following commands:
curl https://BAD-SERVER-IP:42002/metrics-mr --insecure | grep mysql_info_schema_threads
mysql -e "SELECT COALESCE(command,''),COALESCE(state,''),count(*),sum(time) FROM information_schema.processlist WHERE ID != connection_id() GROUP BY command,state ORDER BY null;"