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Merge a contribution from Ryan Mack at Facebook:

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Bugfix for 53290, fast unique index creation fails on duplicate null values

    Summary:
    Bug in the fast index creation code incorrectly considers null
    values to be duplicates during block merging.  Innodb policy is that
    multiple null values are allowed in a unique index.  Null duplicates
    were correctly ignored while sorting individual blocks and with slow
    index creation.

    Test Plan:
    mtr, including new test, load dbs using deferred index creation

    DiffCamp Revision: 110840
    Reviewed By: mcallaghan
    CC: mcallaghan, mysql-devel@lists
    Revert Plan:
    OK
This commit is contained in:
Marko Mäkelä
2010-05-05 15:39:01 +03:00
parent 2582a3e97b
commit 543ae0093c
5 changed files with 57 additions and 6 deletions
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17
mysql-test/suite/innodb_plugin/r/innodb_bug53290.result Normal file
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create table bug53290 (x bigint) engine=innodb;
insert into bug53290 () values (),(),(),(),(),(),(),(),(),(),(),();
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
alter table bug53290 add unique index `idx` (x);
drop table bug53290;

22
mysql-test/suite/innodb_plugin/t/innodb_bug53290.test Normal file
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-- source include/have_innodb_plugin.inc
create table bug53290 (x bigint) engine=innodb;
insert into bug53290 () values (),(),(),(),(),(),(),(),(),(),(),();
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
insert into bug53290 select * from bug53290;
alter table bug53290 add unique index `idx` (x);
drop table bug53290;