The asynchronous write-ahead persistence log for the RLV store is separate from the database persistence log. It tracks and makes durable all new and modified data stored the RLV store
The RLV persistence log contains a disk-based copy of the contents of the RLV store. It is stored in a compressed format to balance disk utilization and runtime recovery performance. The log is organized per-table and is stored exclusively in the RLV dbspace. It uses efficient, asynchronous I/O to minimize table modification overhead, and efficient, parallel processing for fast recovery on restart. The log is used to restore the in-memory RLV store on server restart after clean or abnormal shutdown.