Comment 3 for bug 1098498

This might be a server bug which makes the issue more frequent with 5.6. The default timeout for "mysqladmin shutdown" to wait for a pid file to disappear is 3600 seconds, which should be more than enough.

However, for me 5.6 hangs on clean shutdown with "[Note] Giving X client threads a chance to die gracefully" quite frequently. Still using "kill -9" for the test suite is a good idea regardless of this bug.