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Problem ======== On a parallel, delayed replica, Seconds_Behind_Master will not be calculated until after MASTER_DELAY seconds have passed and the event has finished executing, resulting in potentially very large values of Seconds_Behind_Master (which could be much larger than the MASTER_DELAY parameter) for the entire duration the event is delayed. This contradicts the documented MASTER_DELAY behavior, which specifies how many seconds to withhold replicated events from execution. Solution ======== After a parallel replica idles, the first event after idling should immediately update last_master_timestamp with the time that it began execution on the primary. Reviewed By =========== Andrei Elkin <andrei.elkin@mariadb.com>
2 lines
27 B
Plaintext
2 lines
27 B
Plaintext
--slave-parallel-threads=4
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