The problem was a race condition in a test case.
The fix eliminates the race condition by explicit
wait on UNIX socket to start accepting connections.
The patch affects only test suite (i.e. does not touch
server codebase).
start instance; kill mysqlmanager; show ...
The problem was that Instance Manager didn't close client
sockets (sockets for client connections) on execing mysqld
instance. So, mysqld-instance inherits these descriptors.
The fix is to set close-on-exec flag for each client socket.
- BUG#15934: Instance manager fails to work;
- BUG#18020: IM connect problem;
- BUG#18027: IM: Server_ID differs;
- BUG#18033: IM: Server_ID not reported;
- BUG#21331: Instance Manager: Connect problems in tests;
The only test suite has been changed
(server codebase has not been modified).
Fix for the bug in mysql-test-run.pl which prevents other tests succeed
after IM-test failure.
The idea of the fix of BUG#20716 is to:
1. Check each SHOW INSTANCES statement, add necessary "sleep" instruction before;
2. Move all environment checkings into the one file and include it everywhere.
