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There were two issues with the test:
1. A race between a race_condition.inc and status variable, where the
status variable Rpl_semi_sync_master_status could be ON before the
semi-sync connection finished establishing, resulting in
Rpl_semi_sync_master_clients showing 0 (instead of 1). To fix this,
we simply instead wait for Rpl_semi_sync_master_clients to be 1
before proceeding.
2. Another race between a race_condition.inc and status variable,
where the wait_condition waited on a process_list command of
'BINLOG DUMP' to disappear to infer the binlog dump thread was
killed, to where we then verified semi-sync state was correct
using status variables. However, the 'BINLOG DUMP' command is
overridden with a killed status before the semi-sync tear-down
happens, and thereby we could see invalid values. The fix for
this is to change the wait_condition to instead wait for the
connection with the replication user is gone, because that stays
through the binlog dump thread tear-down life-cycle
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| .. | ||
| extension | ||
| include | ||
| r | ||
| t | ||
| disabled.def | ||
| my.cnf | ||
| README | ||
| rpl_1slave_base.cnf | ||
How to run. =========== ./mysql-test-run.pl --suite=rpl --mysqld=--binlog-format=mixed