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#
# Bug#49907: ALTER TABLE ... TRUNCATE PARTITION
#            does not wait for locks on the table
#
CREATE TABLE t1 (a INT)
ENGINE = InnoDB
PARTITION BY RANGE (a)
(PARTITION p0 VALUES LESS THAN (15),
PARTITION pMax VALUES LESS THAN MAXVALUE);
INSERT INTO t1 VALUES (1), (11), (21), (33);
BEGIN;
DELETE FROM t1 WHERE a = 11;
SELECT * FROM t1;
a
1
21
33
# con1 (send)
ALTER TABLE t1 TRUNCATE PARTITION pMax;
# con default
SELECT * FROM t1;
a
1
21
33
# Commit will allow the TRUNCATE to finish
COMMIT;
# con1 (reap)
# con1 (disconnect)
# default connection
SELECT * FROM t1;
a
1
DROP TABLE t1;
#
# Bug#50561: ALTER PARTITIONS does not have adequate lock, breaks with
#            concurrent I_S query
create table t1 (a int)
engine = innodb stats_persistent=0
partition by range (a)
(partition p0 values less than MAXVALUE);
insert into t1 values (1), (11), (21), (33);
SELECT * FROM t1;
a
1
11
21
33
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1 STATS_PERSISTENT=0
/*!50100 PARTITION BY RANGE (a)
(PARTITION p0 VALUES LESS THAN MAXVALUE ENGINE = InnoDB) */
t1#P#p0.ibd
t1.frm
SET DEBUG_SYNC='before_open_in_get_all_tables SIGNAL parked WAIT_FOR open';
SET DEBUG_SYNC='partition_open_error SIGNAL alter WAIT_FOR finish';
SELECT TABLE_SCHEMA, TABLE_NAME, PARTITION_NAME, PARTITION_ORDINAL_POSITION,
PARTITION_DESCRIPTION, TABLE_ROWS
FROM INFORMATION_SCHEMA.PARTITIONS
WHERE TABLE_NAME = 't1' AND TABLE_SCHEMA = 'test';
SET DEBUG_SYNC = 'now WAIT_FOR parked';
# When waiting for the name lock in get_all_tables in sql_show.cc
# this will not be concurrent any more, thus the TIMEOUT
SET DEBUG_SYNC = 'before_handle_alter_part_end SIGNAL open WAIT_FOR alter TIMEOUT 1';
# Needs to be executed twice, since first is this 'SET DEBUG_SYNC ...'
SET DEBUG_SYNC = 'before_close_thread_tables SIGNAL finish EXECUTE 2';
ALTER TABLE t1 REORGANIZE PARTITION p0 INTO
(PARTITION p0 VALUES LESS THAN (10),
PARTITION p10 VALUES LESS THAN MAXVALUE);
Warnings:
Warning	1639	debug sync point wait timed out
TABLE_SCHEMA	TABLE_NAME	PARTITION_NAME	PARTITION_ORDINAL_POSITION	PARTITION_DESCRIPTION	TABLE_ROWS
test	t1	p0	1	10	1
test	t1	p10	2	MAXVALUE	3
t1#P#p0.ibd
t1#P#p10.ibd
t1.frm
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1 STATS_PERSISTENT=0
/*!50100 PARTITION BY RANGE (a)
(PARTITION p0 VALUES LESS THAN (10) ENGINE = InnoDB,
 PARTITION p10 VALUES LESS THAN MAXVALUE ENGINE = InnoDB) */
SELECT * FROM t1;
a
1
11
21
33
drop table t1;
SET DEBUG_SYNC = 'RESET';