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MDEV-31043 ER_KEY_NOT_FOUND upon concurrent ALTER and transaction

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Non-transactional engines changes are visible immediately the row operation
succeeds, so we should apply the changes to the online buffer immediately
after the statement ends.
This commit is contained in:
Nikita Malyavin
2023-04-14 04:34:21 +03:00
committed by Sergei Golubchik
parent c76072db93
commit 0695f7dd7b
3 changed files with 109 additions and 9 deletions
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36
mysql-test/main/alter_table_online_debug.test
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@ -1440,8 +1440,44 @@ select * from t;
drop table t;
--echo #
--echo # MDEV-31043 ER_KEY_NOT_FOUND upon concurrent ALTER and transaction
--echo #
let $i=2;
let local_engine=myisam;
while ($i) {
eval create table t (a int, b int) engine=$local_engine;
insert into t values (1,10),(2,20);
set debug_sync= 'alter_table_online_before_lock signal burnit wait_for goforit';
--send
alter table t add c int, algorithm=copy, lock=none;
--connection con1
set debug_sync= 'now wait_for burnit';
update t set b = 100;
start transaction;
update t set b = 200;
--connection con2
delete from t order by a limit 1;
delete from t order by a limit 1;
select * from t;
--connection con1
commit;
set debug_sync= 'now signal goforit';
--connection default
--reap
select * from t;
drop table t;
dec $i;
let local_engine=aria;
}
set debug_sync= reset;
--disconnect con1
--disconnect con2
--echo #
--echo # End of 11.2 tests
--echo #