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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
connect con1, localhost, root,,;
ALTER TABLE t1 TRUNCATE PARTITION pMax;
connection default;
SELECT * FROM t1;
a
1
21
33
# Commit will allow the TRUNCATE to finish
COMMIT;
connection con1;
disconnect con1;
connection default;
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
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
PARTITION BY RANGE (`a`)
(PARTITION `p0` VALUES LESS THAN MAXVALUE ENGINE = InnoDB)
db.opt
t1#P#p0.ibd
t1.frm
t1.par
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';
connect con1, localhost, root,,;
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_rename_partitions 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
disconnect con1;
connection default;
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
db.opt
t1#P#p0.ibd
t1#P#p10.ibd
t1.frm
t1.par
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
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;
db.opt
SET DEBUG_SYNC = 'RESET';
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