SET DEBUG_SYNC = 'RESET';
DROP TABLE IF EXISTS t1, t2, t3;
DROP FUNCTION IF EXISTS MY_KILL;
CREATE FUNCTION MY_KILL(tid INT) RETURNS INT
BEGIN
DECLARE CONTINUE HANDLER FOR SQLEXCEPTION BEGIN END;
KILL tid;
RETURN (SELECT COUNT(*) = 0 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE ID = tid);
END|
SET DEBUG_SYNC= 'thread_end SIGNAL con1_end';
SET DEBUG_SYNC= 'before_do_command_net_read SIGNAL con1_read';
SET DEBUG_SYNC='now WAIT_FOR con1_read';
SET DEBUG_SYNC= 'now WAIT_FOR con1_end';
SET DEBUG_SYNC = 'RESET';
SELECT 1;
Got one of the listed errors
SELECT 1;
1
1
SELECT @id != CONNECTION_ID();
@id != CONNECTION_ID()
1
SELECT 4;
4
4
KILL (SELECT COUNT(*) FROM mysql.user);
ERROR 42000: This version of MySQL doesn't yet support 'Usage of subqueries or stored function calls as part of this statement'
SET DEBUG_SYNC= 'thread_end SIGNAL con1_end';
SET DEBUG_SYNC= 'before_do_command_net_read SIGNAL con1_read WAIT_FOR kill';
SET DEBUG_SYNC= 'now WAIT_FOR con1_read';
SET DEBUG_SYNC= 'now WAIT_FOR con1_end';
SET DEBUG_SYNC = 'RESET';
SELECT 1;
Got one of the listed errors
SELECT 1;
1
1
SELECT @id != CONNECTION_ID();
@id != CONNECTION_ID()
1
SELECT 4;
4
4
CREATE TABLE t1 (id INT PRIMARY KEY AUTO_INCREMENT);
CREATE TABLE t2 (id INT UNSIGNED NOT NULL);
INSERT INTO t1 VALUES
(0),(0),(0),(0),(0),(0),(0),(0), (0),(0),(0),(0),(0),(0),(0),(0),
(0),(0),(0),(0),(0),(0),(0),(0), (0),(0),(0),(0),(0),(0),(0),(0),
(0),(0),(0),(0),(0),(0),(0),(0), (0),(0),(0),(0),(0),(0),(0),(0),
(0),(0),(0),(0),(0),(0),(0),(0), (0),(0),(0),(0),(0),(0),(0),(0);
INSERT t1 SELECT 0 FROM t1 AS a1, t1 AS a2 LIMIT 4032;
INSERT INTO t2 SELECT id FROM t1;
SET DEBUG_SYNC= 'thread_end SIGNAL con1_end';
SET DEBUG_SYNC= 'before_acos_function SIGNAL in_sync';
SELECT id FROM t1 WHERE id IN
(SELECT DISTINCT a.id FROM t2 a, t2 b, t2 c, t2 d
GROUP BY ACOS(1/a.id), b.id, c.id, d.id
HAVING a.id BETWEEN 10 AND 20);
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
KILL @id;
SET DEBUG_SYNC= 'now WAIT_FOR con1_end';
Got one of the listed errors
SELECT 1;
1
1
SET DEBUG_SYNC = 'RESET';
DROP TABLE t1, t2;
SET DEBUG_SYNC= 'before_acos_function SIGNAL in_sync WAIT_FOR kill';
SELECT ACOS(0);
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
KILL QUERY @id;
ACOS(0)
1.5707963267948966
SELECT 1;
1
1
SELECT @id = CONNECTION_ID();
@id = CONNECTION_ID()
1
SET DEBUG_SYNC = 'RESET';
CREATE TABLE t1 (f1 INT);
CREATE FUNCTION bug27563() RETURNS INT(11)
DETERMINISTIC
BEGIN
DECLARE CONTINUE HANDLER FOR SQLSTATE '70100' SET @a:= 'killed';
DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SET @a:= 'exception';
SET DEBUG_SYNC= 'now SIGNAL in_sync WAIT_FOR kill';
RETURN 1;
END|
INSERT INTO t1 VALUES (bug27563());
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
KILL QUERY @id;
ERROR 70100: Query execution was interrupted
SELECT * FROM t1;
f1
SET DEBUG_SYNC = 'RESET';
INSERT INTO t1 VALUES(0);
UPDATE t1 SET f1= bug27563();
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
KILL QUERY @id;
ERROR 70100: Query execution was interrupted
SELECT * FROM t1;
f1
0
SET DEBUG_SYNC = 'RESET';
INSERT INTO t1 VALUES(1);
DELETE FROM t1 WHERE bug27563() IS NULL;
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
KILL QUERY @id;
ERROR 70100: Query execution was interrupted
SELECT * FROM t1;
f1
0
1
SET DEBUG_SYNC = 'RESET';
SELECT * FROM t1 WHERE f1= bug27563();
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
KILL QUERY @id;
ERROR 70100: Query execution was interrupted
SELECT * FROM t1;
f1
0
1
SET DEBUG_SYNC = 'RESET';
DROP FUNCTION bug27563;
CREATE TABLE t2 (f2 INT);
CREATE TRIGGER trg27563 BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
DECLARE CONTINUE HANDLER FOR SQLSTATE '70100' SET @a:= 'killed';
DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SET @a:= 'exception';
INSERT INTO t2 VALUES(0);
SET DEBUG_SYNC= 'now SIGNAL in_sync WAIT_FOR kill';
INSERT INTO t2 VALUES(1);
END|
INSERT INTO t1 VALUES(2),(3);
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
KILL QUERY @id;
ERROR 70100: Query execution was interrupted
SELECT * FROM t1;
f1
0
1
SELECT * FROM t2;
f2
0
SET DEBUG_SYNC = 'RESET';
DROP TABLE t1, t2;
SET DEBUG_SYNC= 'before_join_optimize SIGNAL in_sync';
PREPARE stmt FROM 'EXPLAIN SELECT * FROM t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12,t13,t14,t15,t16,t17,t18,t19,t20,t21,t22,t23,t24,t25,t26,t27,t28,t29,t30,t31,t32,t33,t34,t35,t36,t37,t38,t39,t40 WHERE a1=a2 AND a2=a3 AND a3=a4 AND a4=a5 AND a5=a6 AND a6=a7 AND a7=a8 AND a8=a9 AND a9=a10 AND a10=a11 AND a11=a12 AND a12=a13 AND a13=a14 AND a14=a15 AND a15=a16 AND a16=a17 AND a17=a18 AND a18=a19 AND a19=a20 AND a20=a21 AND a21=a22 AND a22=a23 AND a23=a24 AND a24=a25 AND a25=a26 AND a26=a27 AND a27=a28 AND a28=a29 AND a29=a30 AND a30=a31 AND a31=a32 AND a32=a33 AND a33=a34 AND a34=a35 AND a35=a36 AND a36=a37 AND a37=a38 AND a38=a39 AND a39=a40  ';
EXECUTE stmt;
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
KILL QUERY @id;
ERROR 70100: Query execution was interrupted
SET DEBUG_SYNC = 'RESET';
#
# Bug#19723: kill of active connection yields different error code
# depending on platform.
#

# Connection: con1.
SET DEBUG_SYNC= 'thread_end SIGNAL con1_end';
KILL @id;
ERROR 70100: Query execution was interrupted
SET DEBUG_SYNC= 'now WAIT_FOR con1_end';
# ER_SERVER_SHUTDOWN, CR_SERVER_GONE_ERROR, CR_SERVER_LOST,
# depending on the timing of close of the connection socket
SELECT 1;
Got one of the listed errors
SELECT 1;
1
1
SELECT @id != CONNECTION_ID();
@id != CONNECTION_ID()
1
SET DEBUG_SYNC = 'RESET';
#
# Additional test for WL#3726 "DDL locking for all metadata objects"
# Check that DDL and DML statements waiting for metadata locks can
# be killed. Note that we don't cover all situations here since it
# can be tricky to write test case for some of them (e.g. REPAIR or
# ALTER and other statements under LOCK TABLES).
#
drop tables if exists t1, t2, t3;
create table t1 (i int primary key);
# Test for RENAME TABLE
# Switching to connection 'blocker'
lock table t1 read;
# Switching to connection 'ddl'
rename table t1 to t2;
# Switching to connection 'default'
kill query ID;
# Switching to connection 'ddl'
ERROR 70100: Query execution was interrupted
# Test for DROP TABLE
drop table t1;
# Switching to connection 'default'
kill query ID;
# Switching to connection 'ddl'
ERROR 70100: Query execution was interrupted
# Test for CREATE TRIGGER
create trigger t1_bi before insert on t1 for each row set @a:=1;
# Switching to connection 'default'
kill query ID;
# Switching to connection 'ddl'
ERROR 70100: Query execution was interrupted
#
# Tests for various kinds of ALTER TABLE
#
# Full-blown ALTER which should copy table
alter table t1 add column j int;
# Switching to connection 'default'
kill query ID;
# Switching to connection 'ddl'
ERROR 70100: Query execution was interrupted
# Two kinds of simple ALTER
alter table t1 rename to t2;
# Switching to connection 'default'
kill query ID;
# Switching to connection 'ddl'
ERROR 70100: Query execution was interrupted
alter table t1 disable keys;
# Switching to connection 'default'
kill query ID;
# Switching to connection 'ddl'
ERROR 70100: Query execution was interrupted
# Fast ALTER
alter table t1 alter column i set default 100;
# Switching to connection 'default'
kill query ID;
# Switching to connection 'ddl'
ERROR 70100: Query execution was interrupted
# Special case which is triggered only for MERGE tables.
# Switching to connection 'blocker'
unlock tables;
create table t2 (i int primary key) engine=merge union=(t1);
lock tables t2 read;
# Switching to connection 'ddl'
alter table t2 alter column i set default 100;
# Switching to connection 'default'
kill query ID;
# Switching to connection 'ddl'
ERROR 70100: Query execution was interrupted
# Test for DML waiting for meta-data lock
# Switching to connection 'blocker'
unlock tables;
lock tables t1 read;
# Switching to connection 'ddl'
truncate table t1;
# Switching to connection 'dml'
insert into t1 values (1);
# Switching to connection 'default'
kill query ID2;
# Switching to connection 'dml'
ERROR 70100: Query execution was interrupted
# Switching to connection 'blocker'
unlock tables;
# Switching to connection 'ddl'
# Test for DML waiting for tables to be flushed
# Switching to connection 'blocker'
lock tables t1 read;
# Switching to connection 'ddl'
# Let us mark locked table t1 as old
flush tables;
# Switching to connection 'dml'
select * from t1;
# Switching to connection 'default'
kill query ID2;
# Switching to connection 'dml'
ERROR 70100: Query execution was interrupted
# Switching to connection 'blocker'
unlock tables;
# Switching to connection 'ddl'
# Cleanup.
# Switching to connection 'default'
drop table t1;
drop table t2;
SET DEBUG_SYNC = 'RESET';
DROP FUNCTION MY_KILL;
