Got error -1 when reading table
环境:Percona Server for MySQL 5.5.18
模拟三个Terminal,实现当引用锁定表的查询被杀死时,错误日志中出现的Got error -1 when reading table
Terminal A
mysql> set session autocommit=0;
Query OK, 0 rows affected (0.00 sec)
mysql> create table t1(i1 int not null primary key, v2 varchar(20)) engine =innodb;
Query OK, 0 rows affected (0.00 sec)
mysql> insert into t1 values(1,'a'),(2, 'b'),(3, 'c'),(4,'d');
Query OK, 4 rows affected (0.00 sec)
Records: 4 Duplicates: 0 Warnings: 0
mysql> commit;
Query OK, 0 rows affected (0.01 sec)
mysql> select * from t1 where i1 = 2 for update;
+----+------+
| i1 | v2 |
+----+------+
| 2 | b |
+----+------+
1 row in set (0.00 sec)
mysql> select * from t1 where i1 = 4 for update;
+----+------+
| i1 | v2 |
+----+------+
| 4 | d |
+----+------+
1 row in set (0.00 sec)
Terminal B
mysql> set session autocommit=0;
Query OK, 0 rows affected (0.00 sec)
mysql> select * from t1 where i1 = 4 for update; 此时的查询会因为 Terminal A未提交而等待
Terminal C
mysql> show processlist;
+----+------+-----------+------+---------+------+------------+------------------------------------------+
| Id | User | Host | db | Command | Time | State | Info |
+----+------+-----------+------+---------+------+------------+------------------------------------------+
| 1 | root | localhost | test | Query | 6 | statistics | select * from t1 where i1 = 4 for update |
| 3 | root | localhost | NULL | Query | 0 | NULL | show processlist |
| 5 | root | localhost | test | Sleep | 328 | | NULL |
+----+------+-----------+------+---------+------+------------+------------------------------------------+
3 rows in set (0.00 sec)
mysql> kill query 1; 杀掉Terminal B 的Query
Query OK, 0 rows affected (0.00 sec)
查看日志
171111 0:17:04 [ERROR] Got error -1 when reading table './test/t1'
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