On Tue, May 16, 2023 at 1:37 PM Andrei Elkin <andrei.el...@mariadb.com> wrote: > Can you comment on chances for `flush_lsn` never advance to the value of > `write_lsn` when/because Innodb has nothing to commit (so at such a time > RM (or PURGE or FLUSH LOGS that have been mentioned too) might be run)?
If the last write to the log was an InnoDB internal one, it could be done by log_write_up_to(lsn, false). The log_sys.flushed_to_disk_lsn would only be advanced (to somewhere closer to log_sys.lsn) if there was a subsequent call to log_write_up_to(lsn, true). Log checkpoint would advance log_sys.flushed_to_disk_lsn, as should a user transaction commit. This could be a possible explanation. -- Marko Mäkelä, Lead Developer InnoDB MariaDB plc _______________________________________________ Mailing list: https://launchpad.net/~maria-developers Post to : maria-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~maria-developers More help : https://help.launchpad.net/ListHelp
