The operational procedure to modify commit log archiving is to edit commitlog_archiving.properties and then perform a restart. However this has troublesome edge cases:
1) It is possible for people to modify commitlog_archiving.properties but then not perform a restart
2) It is possible for people to modify commitlog_archiving.properties only on some nodes
3) It is possible for people to have modified file + restart but then later add more nodes without correct modifications.
Because of these reasons, it is operationally useful to be able to audit the commit log archive state of a node. Simply parsing commitlog_archiving.properties is insufficient due to #1.
I would suggest exposing either via some system table or JMX would be useful.