is not much helpful while describing this setting (and the enterprise documentation on it is not any better).
Please extend it with description that can be found here:
There is also missing correlation between these two, which goes as follows:
rocksdb_wal_recovery_mode = 1 (default)
rocksdb_wal_recovery_mode = 0
rocksdb_wal_recovery_mode = 2
rocksdb_wal_recovery_mode = 3
It can be verified by checking the $datadir/.rocksdb/OPTIONS-* file for wal_recovery_mode= value after using particular rocksdb_wal_recovery_mode setting.