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-----------------------------------------------------------------------
- Locking issues case 7:
- Rows that are scanned as part of a query but not in the table being
- updated should not be locked unless rocksdb_lock_scanned_rows is on
-----------------------------------------------------------------------
DROP TABLE IF EXISTS t1, t2;
SELECT @@global.rocksdb_lock_scanned_rows;
@@global.rocksdb_lock_scanned_rows
0
SET GLOBAL rocksdb_lock_scanned_rows=ON;
CREATE TABLE t1(id INT PRIMARY KEY, value INT);
CREATE TABLE t2(id INT PRIMARY KEY, value INT);
INSERT INTO t1 VALUES (1,1), (2,2), (3,3);
INSERT INTO t2 VALUES (1,1), (2,2), (3,3), (4,4), (5,5);
connect con1,localhost,root,,;
connect con2,localhost,root,,;
connection con1;
SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
BEGIN;
connection con2;
SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
BEGIN;
lock_scanned_rows is 1
connection con1;
UPDATE t1 JOIN t2 ON t1.id = t2.id SET t1.value=t1.value+100 WHERE t2.id=3;
connection con2;
UPDATE t2 SET value=value+100 WHERE id=3;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
UPDATE t2 SET value=value+100 WHERE id IN (1,2,4,5);
SELECT * FROM t2;
id value
1 101
2 102
3 3
4 104
5 105
connection con1;
COMMIT;
connection default;
disconnect con1;
disconnect con2;
DROP TABLE t1;
DROP TABLE t2;
SET GLOBAL rocksdb_lock_scanned_rows=0;
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