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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.
23 lines
536 B
Plaintext
23 lines
536 B
Plaintext
--source include/have_innodb.inc
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let $algorithm = `SELECT @@ALTER_ALGORITHM`;
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let $error_code = 0;
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if ($algorithm == "NOCOPY") {
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let $error_code = ER_ALTER_OPERATION_NOT_SUPPORTED;
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}
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if ($algorithm == "INSTANT") {
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let $error_code = ER_ALTER_OPERATION_NOT_SUPPORTED, ER_ALTER_OPERATION_NOT_SUPPORTED_REASON;
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}
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--source include/alter_nocopy_fail.inc
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if ($algorithm == "NOCOPY") {
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let $error_code = 0;
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}
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if ($algorithm == "INSTANT") {
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let $error_code = ER_ALTER_OPERATION_NOT_SUPPORTED_REASON;
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}
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--source include/alter_nocopy.inc
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