mariadb/mysql-test/t/rpl_bug38694.test at a734d03cc5671bd350e3ffcd2c86da08088596e0 - mirror/mariadb - May the force be without you: git.fucktheforce.de

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Andrei Elkin e02d162f79 Bug #38694 Race condition in replication thread shutdown

The issue of the current bug is unguarded access to mi->slave_running 
by the shutdown thread calling end_slave() that is bug#29968 
(alas happened not to be cross-linked with the current bug)

Fixed:

with removing the unguarded read of the running status
and perform reading it in terminate_slave_thread()
at time run_lock is taken (mostly bug#29968 backporting, still with some
improvements over that patch - see the error reporting from 
terminate_slave_thread()).
Issue of bug#38716 is fixed here for 5.0 branch as well.

Note:

There has been a separate artifact identified - 
a race condition between init_slave() and  end_slave() - 
reported as  Bug#44467.

2009-04-28 14:46:07 +03:00

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 # Testing replication threads stopping concurrency issue
 # at the server shutdown
 # Related bugs: bug#38694, bug#29968, bug#25306
 # The test checks if a delay at the termination phase of slave threads
 # DBUG_EXECUTE_IF("simulate_slave_delay_at_terminate_bug38694", sleep(5););
 # could cause any issue.
 source include/master-slave.inc;
 # End of tests