--rpl-semi-sync-master-wait-no-slave

This is a command-line option for the mariadbd & mysqld commands.

In 10.5 ES, 10.5 CS, 10.4 ES, 10.4 CS, 10.3 ES, 10.3 CS:

Wait until timeout when no semi-synchronous replication slave available (enabled by default). (Defaults to on; use --skip-rpl-semi-sync-master-wait-no-slave to disable.)

In 10.2 ES, 10.2 CS:

Not present

See also: mariadbd & mysqld for MariaDB Enterprise Server 10.5, in 10.5 CS, in 10.4 ES, in 10.4 CS, in 10.3 ES, in 10.3 CS, in 10.2 ES, and in 10.2 CS