Show preservation of autoincrement values via ndb_restore
Cover some variants including :
- Basic restore
- Keyless table use case
- Restore via a staging table
- Restore with no data
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1.  Create tables and add some data
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use test;
create table boring (
a tinyint auto_increment primary key,
b int
) engine=ndb;
Expect next == 7
insert into boring (b) values (1), (2), (3), (4), (5), (6);
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="boring";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
test	boring	7
create table boring_keyless (
a int
) engine=ndb;
Expect next == 5
insert into boring_keyless values (1), (2), (3), (4);
create table empty_default (
a mediumint primary key auto_increment,
b int
) engine=ndb;
Expect next == 1
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="empty_default";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
test	empty_default	1
create table empty_specific (
a mediumint primary key auto_increment,
b int
) engine=ndb auto_increment=73;
Expect next == 73
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="empty_specific";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
test	empty_specific	73
create table big_varchars (
a bigint auto_increment primary key,
b varchar(2000)
) engine=ndb;
insert into big_varchars (b) values (repeat('ILBJC', 400));
insert into big_varchars (b) values (repeat('ILBJC', 400));
insert into big_varchars (b) values (repeat('ILBJC', 400));
insert into big_varchars (b) values (repeat('ILBJC', 400));
insert into big_varchars (b) values (repeat('ILBJC', 400));
Expect next == 6
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="big_varchars";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
test	big_varchars	6
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2.  Take a backup
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drop table big_varchars;
drop table empty_specific;
drop table empty_default;
drop table boring_keyless;
drop table boring;
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3.  Manually re-create schema via MySQLD with some changes
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Avoid any accidental tableid line-up
create table filler1(a int primary key) engine=ndb;
create table filler2(a int primary key) engine=ndb;
create table filler3(a int primary key) engine=ndb;
create table filler4(a int primary key) engine=ndb;
create table filler5(a int primary key) engine=ndb;
create table filler6(a int primary key) engine=ndb;
create table filler7(a int primary key) engine=ndb;
create table filler8(a int primary key) engine=ndb;
big_varchars table now has a text column
testing staging area transform
create table big_varchars (
a bigint auto_increment primary key,
b text
) engine=ndb;
create table boring (
a tinyint auto_increment primary key,
b int
) engine=ndb;
create table boring_keyless (
a int
) engine=ndb;
create table empty_default (
a mediumint primary key auto_increment,
b int
) engine=ndb;
Expect next == 1
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="empty_default";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
test	empty_default	1
create table empty_specific (
a mediumint primary key auto_increment,
b int
) engine=ndb auto_increment=73;
Expect next == 73
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="empty_specific";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
test	empty_specific	73
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4.  Restore data
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5.  Check autoincrement info
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Expect 7
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="boring";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
test	boring	7
Expect 1
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="empty_default";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
test	empty_default	1
Expect 73
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="empty_specific";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
test	empty_specific	73
Expect 6
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="big_varchars";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
test	big_varchars	6
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6.  Test via inserts
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insert into boring (b) values (99);
Expect 7
select max(a) from boring;
max(a)
7
insert into boring_keyless values (99);
select * from boring_keyless order by a;
a
1
2
3
4
99
insert into empty_default (b) values (99);
Expect 1,99
select * from empty_default;
a	b
1	99
insert into empty_specific (b) values (99);
Expect 73,99
select * from empty_specific;
a	b
73	99
insert into big_varchars(b) values (repeat('IMBJC', 400));
Expect 6
select max(a) from big_varchars;
max(a)
6
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7.  Cleanup
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drop table boring;
drop table boring_keyless;
drop table empty_default;
drop table empty_specific;
drop table big_varchars;
drop table filler1, filler2, filler3, filler4;
drop table filler5, filler6, filler7, filler8;
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8.  Use ndb_restore metadata restore
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SET @old_ndb_metadata_check = @@global.ndb_metadata_check;
SET GLOBAL ndb_metadata_check = false;
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9.  Check autoincrement info
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With just NdbApi metadata restored, auto_increment values are set to default values
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="boring";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="empty_default";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="empty_specific";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="big_varchars";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
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10.  Restore data
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11.  Check autoincrement info
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Expect 7
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="boring";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
Expect 1
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="empty_default";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
Expect 73
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="empty_specific";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
Expect 6
select table_schema, table_name, auto_increment from information_schema.tables where table_schema="test" and table_name="big_varchars";
TABLE_SCHEMA	TABLE_NAME	AUTO_INCREMENT
SET GLOBAL ndb_metadata_check = @old_ndb_metadata_check;
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6.  Test via inserts
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insert into boring (b) values (99);
Expect 7
select max(a) from boring;
max(a)
7
insert into boring_keyless values (99);
select * from boring_keyless order by a;
a
1
2
3
4
99
insert into empty_default (b) values (99);
Expect 1,99
select * from empty_default;
a	b
1	99
insert into empty_specific (b) values (99);
Expect 73,99
select * from empty_specific;
a	b
73	99
insert into big_varchars(b) values (repeat('IMBJC', 400));
Expect 6
select max(a) from big_varchars;
max(a)
6
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7.  Cleanup
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drop table boring;
drop table boring_keyless;
drop table empty_default;
drop table empty_specific;
drop table big_varchars;