database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

MDEV-21921 Make transaction_isolation and transaction_read_only into system variables

Browse Source 
In MariaDB, we have a confusing problem where:
* The transaction_isolation option can be set in a configuration file, but it cannot be set dynamically.
* The tx_isolation system variable can be set dynamically, but it cannot be set in a configuration file.

Therefore, we have two different names for the same thing in different contexts. This is needlessly confusing, and it complicates the documentation. The same thing applys for transaction_read_only.

MySQL 5.7 solved this problem by making them into system variables. https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-20.html

This commit takes a similar approach by adding new system variables and marking the original ones as deprecated. This commit also resolves some legacy problems related to SET STATEMENT and transaction_isolation.
This commit is contained in:
Junqi Xie
2023-03-12 13:55:30 +08:00
committed by Daniel Black
parent 4472a7b4ff
commit d20a96f9c1
100 changed files with 1232 additions and 962 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
mysql-test/main/concurrent_innodb_safelog.result
View File

@ -3,8 +3,8 @@ SET GLOBAL innodb_lock_wait_timeout = 1;
SET GLOBAL TRANSACTION ISOLATION LEVEL REPEATABLE READ;
connection default;
SET SQL_MODE="";
SELECT @@global.tx_isolation;
@@global.tx_isolation
SELECT @@global.transaction_isolation;
@@global.transaction_isolation
REPEATABLE-READ
# keep_locks == 1
GRANT ALL ON test.* TO mysqltest@localhost;