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MDEV-13134 Introduce ALTER TABLE attributes ALGORITHM=NOCOPY and ALGORITHM=INSTANT

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Introduced new alter algorithm type called NOCOPY & INSTANT for
inplace alter operation.

NOCOPY - Algorithm refuses any alter operation that would
rebuild the clustered index. It is a subset of INPLACE algorithm.

INSTANT - Algorithm allow any alter operation that would
modify only meta data. It is a subset of NOCOPY algorithm.

Introduce new variable called alter_algorithm. The values are
DEFAULT(0), COPY(1), INPLACE(2), NOCOPY(3), INSTANT(4)

Message to deprecate old_alter_table variable and make it alias
for alter_algorithm variable.

alter_algorithm variable for slave is always set to default.
This commit is contained in:
Thirunarayanan Balathandayuthapani
2018-05-07 14:54:58 +05:30
parent a0bc3b7eee
commit 85cc6b70bd
44 changed files with 1337 additions and 342 deletions
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66
mysql-test/suite/innodb/r/alter_algorithm,INPLACE.rdiff Normal file
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@ -0,0 +1,66 @@
--- alter_algorithm.result 2018-05-06 23:42:08.022302601 +0530
+++ alter_algorithm.reject 2018-05-06 23:45:23.813346814 +0530
@@ -7,35 +7,44 @@
INSERT INTO t1(f1, f2, f3) VALUES(1, 1, 1);
SELECT @@alter_algorithm;
@@alter_algorithm
-NOCOPY
+INPLACE
# All the following cases needs table rebuild
# Add and Drop primary key
ALTER TABLE t1 ADD COLUMN col1 INT NOT NULL,DROP PRIMARY KEY,ADD PRIMARY KEY(col1);
-ERROR 0A000: ALGORITHM=NOCOPY is not supported for this operation. Try ALGORITHM=INPLACE
+affected rows: 0
+info: Records: 0 Duplicates: 0 Warnings: 0
# Make existing column NULLABLE
ALTER TABLE t1 MODIFY f2 INT;
-ERROR 0A000: ALGORITHM=NOCOPY is not supported for this operation. Try ALGORITHM=INPLACE
+affected rows: 0
+info: Records: 0 Duplicates: 0 Warnings: 0
# Make existing column NON-NULLABLE
ALTER TABLE t1 MODIFY f3 INT NOT NULL;
-ERROR 0A000: ALGORITHM=NOCOPY is not supported for this operation. Try ALGORITHM=INPLACE
+affected rows: 0
+info: Records: 0 Duplicates: 0 Warnings: 0
# Drop Stored Column
ALTER TABLE t1 DROP COLUMN f5;
-ERROR 0A000: ALGORITHM=NOCOPY is not supported for this operation. Try ALGORITHM=INPLACE
+affected rows: 0
+info: Records: 0 Duplicates: 0 Warnings: 0
# Add base non-generated column as a last column in the compressed table
ALTER TABLE t1 ADD COLUMN f6 INT NOT NULL;
-ERROR 0A000: ALGORITHM=NOCOPY is not supported for this operation. Try ALGORITHM=INPLACE
+affected rows: 0
+info: Records: 0 Duplicates: 0 Warnings: 0
# Add base non-generated column but not in the last position
ALTER TABLE t1 ADD COLUMN f7 INT NOT NULL after f3;
-ERROR 0A000: ALGORITHM=NOCOPY is not supported for this operation. Try ALGORITHM=INPLACE
+affected rows: 0
+info: Records: 0 Duplicates: 0 Warnings: 0
# Force the table to rebuild
ALTER TABLE t1 FORCE;
-ERROR 0A000: ALGORITHM=NOCOPY is not supported for this operation. Try ALGORITHM=INPLACE
+affected rows: 0
+info: Records: 0 Duplicates: 0 Warnings: 0
# Row format changes
ALTER TABLE t1 ROW_FORMAT=COMPRESSED;
-ERROR 0A000: ALGORITHM=NOCOPY is not supported for this operation. Try ALGORITHM=INPLACE
+affected rows: 0
+info: Records: 0 Duplicates: 0 Warnings: 0
# Engine table
ALTER TABLE t1 ENGINE=INNODB;
-ERROR 0A000: ALGORITHM=NOCOPY is not supported for this operation. Try ALGORITHM=INPLACE
+affected rows: 0
+info: Records: 0 Duplicates: 0 Warnings: 0
DROP TABLE t1;
affected rows: 0
CREATE TABLE t1(f1 INT PRIMARY KEY, f2 INT NOT NULL,
@@ -49,7 +58,7 @@
INSERT INTO t1(f1, f2, f4, f5) VALUES(1, 2, 3, 4);
SELECT @@alter_algorithm;
@@alter_algorithm
-NOCOPY
+INPLACE
ALTER TABLE t1 ADD INDEX idx1(f4);
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0