mirror of
https://github.com/MariaDB/server.git
synced 2025-01-17 12:32:27 +01:00
1a600125ff
The patch contributed by Konstantin Osipov applied. Native comments: Implement multiple user-level locks per connection. GET_LOCK() function in MySQL allows a connection to hold at most one user level lock. Taking a new lock automatically releases the old lock, if any. The limit of one lock per session existed since early versions of MySQL didn't have a deadlock detector for SQL locks. MDL patches in MySQL 5.5 added a deadlock detector, so starting from 5.5 it became possible to take multiple locks in any order -- a deadlock, should it occur, would be detected and an error returned to the client which closed the wait chain. This is exactly what is done in this patch: ULLs are moved to use MDL subsystem. |
||
---|---|---|
.. | ||
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