mirror of
https://github.com/MariaDB/server.git
synced 2025-01-31 19:11:46 +01:00
7fb9d64989
Part of MDEV-5336 Implement LOCK FOR BACKUP Originally both table metadata lock and global read lock protection were acquired before getting TABLE from table cache. This will be reordered in a future commit with MDL_BACKUP_XXX locks so that we first take table metadata lock, then get TABLE from table cache, then acquire analogue of global read lock. This patch both simplifies FLUSH TABLES code, makes FLUSH TABLES to lock less and also enables FLUSH TABLES code to be used with backup locks. The usage of FLUSH TABLES changes slightly: - FLUSH TABLES without any arguments will now only close not used tables and tables locked by the FLUSH TABLES connection. All not used table shares will be closed. Tables locked by the FLUSH TABLES connection will be reopened and re-locked after all others has stoped using the table (as before). If there was no locked tables, then FLUSH TABLES is instant and will not cause any waits. FLUSH TABLES will not wait for any in use table. - FLUSH TABLES with a table list, will ensure that the tables are closed before statement returns. The code is now only using MDL locks and not table share versions, which simplices the code greatly. One visible change is that the server will wait for the end of the transaction that are using the tables. Before FLUSH TABLES only waited for the statements to end. Signed-off-by: Monty <monty@mariadb.org>
401 lines
10 KiB
Text
401 lines
10 KiB
Text
set local sql_mode="";
|
|
set global sql_mode="";
|
|
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|
|
|
connect con1, localhost, root,,;
|
|
connect con2, localhost, root,,;
|
|
connection con1;
|
|
connection con2;
|
|
connection con1;
|
|
SET DEBUG_SYNC= 'thread_end SIGNAL con1_end';
|
|
SET DEBUG_SYNC= 'before_do_command_net_read SIGNAL con1_read';
|
|
connection con2;
|
|
SET DEBUG_SYNC='now WAIT_FOR con1_read';
|
|
SET DEBUG_SYNC= 'now WAIT_FOR con1_end';
|
|
SET DEBUG_SYNC = 'RESET';
|
|
connection con1;
|
|
SELECT 1;
|
|
Got one of the listed errors
|
|
SELECT 1;
|
|
1
|
|
1
|
|
SELECT @id != CONNECTION_ID();
|
|
@id != CONNECTION_ID()
|
|
1
|
|
connection con2;
|
|
SELECT 4;
|
|
4
|
|
4
|
|
connection default;
|
|
KILL (SELECT COUNT(*) FROM mysql.user);
|
|
ERROR 42000: KILL does not support subqueries or stored functions
|
|
connection con1;
|
|
connection con2;
|
|
connection con1;
|
|
SET DEBUG_SYNC= 'thread_end SIGNAL con1_end';
|
|
SET DEBUG_SYNC= 'before_do_command_net_read SIGNAL con1_read WAIT_FOR kill';
|
|
connection con2;
|
|
SET DEBUG_SYNC= 'now WAIT_FOR con1_read';
|
|
SET DEBUG_SYNC= 'now WAIT_FOR con1_end';
|
|
SET DEBUG_SYNC = 'RESET';
|
|
connection con1;
|
|
SELECT 1;
|
|
Got one of the listed errors
|
|
SELECT 1;
|
|
1
|
|
1
|
|
SELECT @id != CONNECTION_ID();
|
|
@id != CONNECTION_ID()
|
|
1
|
|
connection con2;
|
|
SELECT 4;
|
|
4
|
|
4
|
|
connection default;
|
|
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;
|
|
connection con1;
|
|
connection con2;
|
|
connection con1;
|
|
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);
|
|
connection con2;
|
|
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
|
|
KILL @id;
|
|
SET DEBUG_SYNC= 'now WAIT_FOR con1_end';
|
|
connection con1;
|
|
Got one of the listed errors
|
|
SELECT 1;
|
|
1
|
|
1
|
|
connection default;
|
|
SET DEBUG_SYNC = 'RESET';
|
|
DROP TABLE t1, t2;
|
|
connection con1;
|
|
connection con2;
|
|
connection con1;
|
|
SET DEBUG_SYNC= 'before_acos_function SIGNAL in_sync WAIT_FOR kill';
|
|
SELECT ACOS(0);
|
|
connection con2;
|
|
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
|
|
KILL QUERY @id;
|
|
connection con1;
|
|
ACOS(0)
|
|
1.5707963267948966
|
|
SELECT 1;
|
|
1
|
|
1
|
|
SELECT @id = CONNECTION_ID();
|
|
@id = CONNECTION_ID()
|
|
1
|
|
connection default;
|
|
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|
|
|
connection con1;
|
|
connection con2;
|
|
connection con1;
|
|
INSERT INTO t1 VALUES (bug27563());
|
|
connection con2;
|
|
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
|
|
KILL QUERY @id;
|
|
connection con1;
|
|
ERROR 70100: Query execution was interrupted
|
|
SELECT * FROM t1;
|
|
f1
|
|
connection default;
|
|
SET DEBUG_SYNC = 'RESET';
|
|
INSERT INTO t1 VALUES(0);
|
|
connection con1;
|
|
UPDATE t1 SET f1= bug27563();
|
|
connection con2;
|
|
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
|
|
KILL QUERY @id;
|
|
connection con1;
|
|
ERROR 70100: Query execution was interrupted
|
|
SELECT * FROM t1;
|
|
f1
|
|
0
|
|
connection default;
|
|
SET DEBUG_SYNC = 'RESET';
|
|
INSERT INTO t1 VALUES(1);
|
|
connection con1;
|
|
DELETE FROM t1 WHERE bug27563() IS NULL;
|
|
connection con2;
|
|
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
|
|
KILL QUERY @id;
|
|
connection con1;
|
|
ERROR 70100: Query execution was interrupted
|
|
SELECT * FROM t1;
|
|
f1
|
|
0
|
|
1
|
|
connection default;
|
|
SET DEBUG_SYNC = 'RESET';
|
|
connection con1;
|
|
SELECT * FROM t1 WHERE f1= bug27563();
|
|
connection con2;
|
|
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
|
|
KILL QUERY @id;
|
|
connection con1;
|
|
ERROR 70100: Query execution was interrupted
|
|
SELECT * FROM t1;
|
|
f1
|
|
0
|
|
1
|
|
connection default;
|
|
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|
|
|
connection con1;
|
|
INSERT INTO t1 VALUES(2),(3);
|
|
connection con2;
|
|
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
|
|
KILL QUERY @id;
|
|
connection con1;
|
|
ERROR 70100: Query execution was interrupted
|
|
SELECT * FROM t1;
|
|
f1
|
|
0
|
|
1
|
|
SELECT * FROM t2;
|
|
f2
|
|
0
|
|
connection default;
|
|
SET DEBUG_SYNC = 'RESET';
|
|
DROP TABLE t1, t2;
|
|
connection con1;
|
|
connection con2;
|
|
connection con1;
|
|
SET SESSION optimizer_search_depth=0;
|
|
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;
|
|
connection con2;
|
|
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
|
|
KILL QUERY @id;
|
|
connection con1;
|
|
ERROR 70100: Query execution was interrupted
|
|
connection default;
|
|
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: Connection was killed
|
|
connection con2;
|
|
SET DEBUG_SYNC= 'now WAIT_FOR con1_end';
|
|
connection con1;
|
|
# 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
|
|
connection default;
|
|
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);
|
|
connect blocker, localhost, root, , ;
|
|
connect dml, localhost, root, , ;
|
|
connect ddl, localhost, root, , ;
|
|
# Test for RENAME TABLE
|
|
connection blocker;
|
|
lock table t1 read;
|
|
connection ddl;
|
|
rename table t1 to t2;
|
|
connection default;
|
|
kill query ID;
|
|
connection ddl;
|
|
ERROR 70100: Query execution was interrupted
|
|
# Test for DROP TABLE
|
|
drop table t1;
|
|
connection default;
|
|
kill query ID;
|
|
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;
|
|
connection default;
|
|
kill query ID;
|
|
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;
|
|
connection default;
|
|
kill query ID;
|
|
connection ddl;
|
|
ERROR 70100: Query execution was interrupted
|
|
# Two kinds of simple ALTER
|
|
alter table t1 rename to t2;
|
|
connection default;
|
|
kill query ID;
|
|
connection ddl;
|
|
ERROR 70100: Query execution was interrupted
|
|
alter table t1 disable keys;
|
|
connection default;
|
|
kill query ID;
|
|
connection ddl;
|
|
ERROR 70100: Query execution was interrupted
|
|
# Fast ALTER
|
|
alter table t1 alter column i set default 100;
|
|
connection default;
|
|
kill query ID;
|
|
connection ddl;
|
|
ERROR 70100: Query execution was interrupted
|
|
# Special case which is triggered only for MERGE tables.
|
|
connection blocker;
|
|
unlock tables;
|
|
create table t2 (i int primary key) engine=merge union=(t1);
|
|
lock tables t2 read;
|
|
connection ddl;
|
|
alter table t2 alter column i set default 100;
|
|
connection default;
|
|
kill query ID;
|
|
connection ddl;
|
|
ERROR 70100: Query execution was interrupted
|
|
# Test for DML waiting for meta-data lock
|
|
connection blocker;
|
|
unlock tables;
|
|
lock tables t1 read;
|
|
connection ddl;
|
|
truncate table t1;
|
|
connection dml;
|
|
insert into t1 values (1);
|
|
connection default;
|
|
kill query ID2;
|
|
connection dml;
|
|
ERROR 70100: Query execution was interrupted
|
|
connection blocker;
|
|
unlock tables;
|
|
connection ddl;
|
|
# Test for DML waiting for tables to be flushed
|
|
connection blocker;
|
|
lock tables t1 read;
|
|
connection ddl;
|
|
# Let us mark locked table t1 as old
|
|
flush tables t1;
|
|
connection dml;
|
|
select * from t1;
|
|
connection default;
|
|
kill query ID2;
|
|
connection dml;
|
|
ERROR 70100: Query execution was interrupted
|
|
connection blocker;
|
|
unlock tables;
|
|
connection ddl;
|
|
# Cleanup.
|
|
connection default;
|
|
drop table t1;
|
|
drop table t2;
|
|
#
|
|
# Test kill USER
|
|
#
|
|
grant ALL on test.* to test@localhost;
|
|
grant ALL on test.* to test2@localhost;
|
|
connect con3, localhost, test,,;
|
|
connect con4, localhost, test2,,;
|
|
connection default;
|
|
kill hard query user test2@nohost;
|
|
affected rows: 0
|
|
kill soft query user test@localhost;
|
|
affected rows: 1
|
|
kill hard query user test@localhost;
|
|
affected rows: 1
|
|
kill soft connection user test2;
|
|
affected rows: 1
|
|
kill hard connection user test@localhost;
|
|
affected rows: 1
|
|
revoke all privileges on test.* from test@localhost;
|
|
revoke all privileges on test.* from test2@localhost;
|
|
drop user test@localhost;
|
|
drop user test2@localhost;
|
|
connection con3;
|
|
select 1;
|
|
Got one of the listed errors
|
|
connection con4;
|
|
select 1;
|
|
Got one of the listed errors
|
|
connection default;
|
|
#
|
|
# MDEV-4911 - add KILL query id, and add query id information to
|
|
# processlist
|
|
#
|
|
SELECT SLEEP(1000);
|
|
connection con1;
|
|
KILL QUERY ID @id;
|
|
connection default;
|
|
SLEEP(1000)
|
|
1
|
|
KILL QUERY ID 0;
|
|
ERROR HY000: Unknown query id: 0
|
|
#
|
|
# MDEV-5096 - Wrong error message on attempt to kill somebody else's
|
|
# query ID
|
|
#
|
|
CREATE USER u1@localhost;
|
|
SELECT SLEEP(1000);
|
|
connection con1;
|
|
connect con5, localhost, u1,,;
|
|
KILL QUERY ID ID;
|
|
ERROR HY000: You are not owner of query ID
|
|
connection con1;
|
|
KILL QUERY ID @id;
|
|
connection default;
|
|
SLEEP(1000)
|
|
1
|
|
disconnect con5;
|
|
DROP USER u1@localhost;
|
|
SET DEBUG_SYNC = 'RESET';
|
|
DROP FUNCTION MY_KILL;
|
|
set global sql_mode=default;
|