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Commit aab5c557 authored by Marko Mäkelä's avatar Marko Mäkelä
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MDEV-16830 Crash in ALTER TABLE DROP FOREIGN KEY 

ha_innobase::inplace_alter_table(): Do nothing if INNOBASE_ALTER_INSTANT
flags (such as DROP FOREIGN KEY) was present.

Also, use ALTER_OPTIONS instead of the alias ALTER_CHANGE_CREATE_OPTION.

This bug was caused by MDEV-11369, MDEV-13134 or related work.
parent 05459706
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Showing with 91 additions and 17 deletions
mysql-test/suite/innodb/r/instant_alter.result
View file @ aab5c557
......@@ -446,6 +446,25 @@ ALTER TABLE t1 ADD COLUMN c INT;
UPDATE t1 SET c = 1;
UPDATE t1 SET c = 2;
DROP TABLE t1;
CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB ROW_FORMAT=REDUNDANT;
CREATE TABLE t2 (b INT PRIMARY KEY, FOREIGN KEY(b) REFERENCES t1(a))
ENGINE=InnoDB ROW_FORMAT=REDUNDANT;
INSERT INTO t1 SET a=1;
INSERT INTO t2 SET b=1;
ALTER TABLE t2 ADD COLUMN a INT, DROP FOREIGN KEY t2_ibfk_1;
ALTER TABLE t2 ADD INDEX(a);
ALTER TABLE t1 ADD COLUMN b INT, ADD FOREIGN KEY(a) REFERENCES t2(a),
ALGORITHM=INSTANT;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Adding foreign keys needs foreign_key_checks=OFF. Try ALGORITHM=COPY
SET foreign_key_checks=0;
ALTER TABLE t1 ADD COLUMN b INT, ADD FOREIGN KEY(a) REFERENCES t2(a),
ALGORITHM=INSTANT;
ALTER TABLE t2 ADD CONSTRAINT fk FOREIGN KEY(b) REFERENCES t1(a),
ALGORITHM=INSTANT;
SET foreign_key_checks=1;
ALTER TABLE t2 COMMENT 'domestic keys only', DROP FOREIGN KEY fk;
ALTER TABLE t1 DROP FOREIGN KEY t1_ibfk_1;
DROP TABLE t2, t1;
CREATE TABLE t1
(id INT PRIMARY KEY, c2 INT UNIQUE,
c3 POINT NOT NULL DEFAULT ST_GeomFromText('POINT(3 4)'),
......@@ -838,6 +857,25 @@ ALTER TABLE t1 ADD COLUMN c INT;
UPDATE t1 SET c = 1;
UPDATE t1 SET c = 2;
DROP TABLE t1;
CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB ROW_FORMAT=COMPACT;
CREATE TABLE t2 (b INT PRIMARY KEY, FOREIGN KEY(b) REFERENCES t1(a))
ENGINE=InnoDB ROW_FORMAT=COMPACT;
INSERT INTO t1 SET a=1;
INSERT INTO t2 SET b=1;
ALTER TABLE t2 ADD COLUMN a INT, DROP FOREIGN KEY t2_ibfk_1;
ALTER TABLE t2 ADD INDEX(a);
ALTER TABLE t1 ADD COLUMN b INT, ADD FOREIGN KEY(a) REFERENCES t2(a),
ALGORITHM=INSTANT;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Adding foreign keys needs foreign_key_checks=OFF. Try ALGORITHM=COPY
SET foreign_key_checks=0;
ALTER TABLE t1 ADD COLUMN b INT, ADD FOREIGN KEY(a) REFERENCES t2(a),
ALGORITHM=INSTANT;
ALTER TABLE t2 ADD CONSTRAINT fk FOREIGN KEY(b) REFERENCES t1(a),
ALGORITHM=INSTANT;
SET foreign_key_checks=1;
ALTER TABLE t2 COMMENT 'domestic keys only', DROP FOREIGN KEY fk;
ALTER TABLE t1 DROP FOREIGN KEY t1_ibfk_1;
DROP TABLE t2, t1;
CREATE TABLE t1
(id INT PRIMARY KEY, c2 INT UNIQUE,
c3 POINT NOT NULL DEFAULT ST_GeomFromText('POINT(3 4)'),
......@@ -1230,10 +1268,29 @@ ALTER TABLE t1 ADD COLUMN c INT;
UPDATE t1 SET c = 1;
UPDATE t1 SET c = 2;
DROP TABLE t1;
CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
CREATE TABLE t2 (b INT PRIMARY KEY, FOREIGN KEY(b) REFERENCES t1(a))
ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
INSERT INTO t1 SET a=1;
INSERT INTO t2 SET b=1;
ALTER TABLE t2 ADD COLUMN a INT, DROP FOREIGN KEY t2_ibfk_1;
ALTER TABLE t2 ADD INDEX(a);
ALTER TABLE t1 ADD COLUMN b INT, ADD FOREIGN KEY(a) REFERENCES t2(a),
ALGORITHM=INSTANT;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Adding foreign keys needs foreign_key_checks=OFF. Try ALGORITHM=COPY
SET foreign_key_checks=0;
ALTER TABLE t1 ADD COLUMN b INT, ADD FOREIGN KEY(a) REFERENCES t2(a),
ALGORITHM=INSTANT;
ALTER TABLE t2 ADD CONSTRAINT fk FOREIGN KEY(b) REFERENCES t1(a),
ALGORITHM=INSTANT;
SET foreign_key_checks=1;
ALTER TABLE t2 COMMENT 'domestic keys only', DROP FOREIGN KEY fk;
ALTER TABLE t1 DROP FOREIGN KEY t1_ibfk_1;
DROP TABLE t2, t1;
disconnect analyze;
SELECT variable_value-@old_instant instants
FROM information_schema.global_status
WHERE variable_name = 'innodb_instant_alter_column';
instants
39
45
SET GLOBAL innodb_purge_rseg_truncate_frequency= @saved_frequency;
mysql-test/suite/innodb/t/instant_alter.test
View file @ aab5c557
......@@ -319,6 +319,27 @@ UPDATE t1 SET c = 1;
UPDATE t1 SET c = 2;
DROP TABLE t1;
# MDEV-16830 Crash in ALTER TABLE DROP FOREIGN KEY
eval CREATE TABLE t1 (a INT PRIMARY KEY) $engine;
eval CREATE TABLE t2 (b INT PRIMARY KEY, FOREIGN KEY(b) REFERENCES t1(a))
$engine;
INSERT INTO t1 SET a=1;
INSERT INTO t2 SET b=1;
ALTER TABLE t2 ADD COLUMN a INT, DROP FOREIGN KEY t2_ibfk_1;
ALTER TABLE t2 ADD INDEX(a);
--error ER_ALTER_OPERATION_NOT_SUPPORTED_REASON
ALTER TABLE t1 ADD COLUMN b INT, ADD FOREIGN KEY(a) REFERENCES t2(a),
ALGORITHM=INSTANT;
SET foreign_key_checks=0;
ALTER TABLE t1 ADD COLUMN b INT, ADD FOREIGN KEY(a) REFERENCES t2(a),
ALGORITHM=INSTANT;
ALTER TABLE t2 ADD CONSTRAINT fk FOREIGN KEY(b) REFERENCES t1(a),
ALGORITHM=INSTANT;
SET foreign_key_checks=1;
ALTER TABLE t2 COMMENT 'domestic keys only', DROP FOREIGN KEY fk;
ALTER TABLE t1 DROP FOREIGN KEY t1_ibfk_1;
DROP TABLE t2, t1;
dec $format;
}
disconnect analyze;
......
storage/innobase/handler/handler0alter.cc
View file @ aab5c557
......@@ -77,8 +77,8 @@ static const alter_table_operations INNOBASE_DEFAULTS
static const alter_table_operations INNOBASE_ALTER_REBUILD
= ALTER_ADD_PK_INDEX
| ALTER_DROP_PK_INDEX
| ALTER_CHANGE_CREATE_OPTION
/* CHANGE_CREATE_OPTION needs to check create_option_need_rebuild() */
| ALTER_OPTIONS
/* ALTER_OPTIONS needs to check create_option_need_rebuild() */
| ALTER_COLUMN_NULLABLE
| INNOBASE_DEFAULTS
| ALTER_STORED_COLUMN_ORDER
......@@ -498,8 +498,7 @@ static bool create_option_need_rebuild(
const Alter_inplace_info* ha_alter_info,
const TABLE* table)
{
DBUG_ASSERT(ha_alter_info->handler_flags
& ALTER_CHANGE_CREATE_OPTION);
DBUG_ASSERT(ha_alter_info->handler_flags & ALTER_OPTIONS);
if (ha_alter_info->create_info->used_fields
& (HA_CREATE_USED_ROW_FORMAT
......@@ -541,7 +540,7 @@ innobase_need_rebuild(
{
if ((ha_alter_info->handler_flags & ~(INNOBASE_INPLACE_IGNORE
| INNOBASE_ALTER_INSTANT))
== ALTER_CHANGE_CREATE_OPTION) {
== ALTER_OPTIONS) {
return create_option_need_rebuild(ha_alter_info, table);
}
......@@ -662,8 +661,7 @@ instant_alter_column_possible(
return false;
}
if (~ha_alter_info->handler_flags
& ALTER_ADD_STORED_BASE_COLUMN) {
if (~ha_alter_info->handler_flags & ALTER_ADD_STORED_BASE_COLUMN) {
return false;
}
......@@ -686,13 +684,11 @@ instant_alter_column_possible(
columns. */
if (ha_alter_info->handler_flags
& ((INNOBASE_ALTER_REBUILD | INNOBASE_ONLINE_CREATE)
& ~ALTER_ADD_STORED_BASE_COLUMN
& ~ALTER_CHANGE_CREATE_OPTION)) {
& ~ALTER_ADD_STORED_BASE_COLUMN & ~ALTER_OPTIONS)) {
return false;
}
return !(ha_alter_info->handler_flags
& ALTER_CHANGE_CREATE_OPTION)
return !(ha_alter_info->handler_flags & ALTER_OPTIONS)
|| !create_option_need_rebuild(ha_alter_info, table);
}
......@@ -5457,8 +5453,7 @@ prepare_inplace_alter_table_dict(
}
}
if (ha_alter_info->handler_flags
& ALTER_CHANGE_CREATE_OPTION) {
if (ha_alter_info->handler_flags & ALTER_OPTIONS) {
const ha_table_option_struct& alt_opt=
*ha_alter_info->create_info->option_struct;
const ha_table_option_struct& opt=
......@@ -6827,7 +6822,7 @@ ha_innobase::prepare_inplace_alter_table(
if (!(ha_alter_info->handler_flags & INNOBASE_ALTER_DATA)
|| ((ha_alter_info->handler_flags & ~(INNOBASE_INPLACE_IGNORE
| INNOBASE_ALTER_INSTANT))
== ALTER_CHANGE_CREATE_OPTION
== ALTER_OPTIONS
&& !create_option_need_rebuild(ha_alter_info, table))) {
if (heap) {
......@@ -7107,8 +7102,9 @@ ha_innobase::inplace_alter_table(
DBUG_RETURN(false);
}
if ((ha_alter_info->handler_flags & ~INNOBASE_INPLACE_IGNORE)
== ALTER_CHANGE_CREATE_OPTION
if ((ha_alter_info->handler_flags & ~(INNOBASE_INPLACE_IGNORE
| INNOBASE_ALTER_INSTANT))
== ALTER_OPTIONS
&& !create_option_need_rebuild(ha_alter_info, table)) {
goto ok_exit;
}
......
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