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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
commit 85cc6b70bd
44 changed files with 1337 additions and 342 deletions
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mysql-test/main/alter_table.result
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@ -1810,9 +1810,7 @@ affected rows: 2
info: Records: 2 Duplicates: 0 Warnings: 0
ALTER TABLE ti1 ADD FULLTEXT INDEX ii3 (d);
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 1
Warnings:
Warning 124 InnoDB rebuilding table to add column FTS_DOC_ID
info: Records: 0 Duplicates: 0 Warnings: 0
ALTER TABLE tm1 ADD FULLTEXT INDEX im3 (d);
affected rows: 2
info: Records: 2 Duplicates: 0 Warnings: 0