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test how MDL blocks InnoDB purge

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it must, because purge opens a table that might be being altered right now
This commit is contained in:
Sergei Golubchik 2016-11-21 15:04:57 +01:00
parent 1cae1af6f9
commit 8b3b6dc377
2 changed files with 40 additions and 1 deletions
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19
mysql-test/suite/gcol/r/innodb_virtual_debug_purge.result
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@ -138,4 +138,23 @@ a b c
6 6 12
8 8 16
DROP TABLE t0, t1;
create table t (a blob, b blob, c blob as (concat(a,b)), h varchar(10), index (c(100)));
insert t(a,b,h) values (repeat('g', 16000), repeat('x', 16000), "kk");
insert t(a,b,h) values (repeat('a', 16000), repeat('b', 16000), "mm");
set global innodb_purge_stop_now = 1;
set global debug_dbug="+d,ib_purge_virtual_index_callback";
update t set a = repeat('m', 16000) where a like "aaa%";
connect con1, localhost, root;
lock table t write;
connection default;
set global innodb_purge_run_now=1;
select variable_value>1 from information_schema.global_status where variable_name='innodb_purge_trx_id_age';
variable_value>1
1
disconnect con1;
select variable_value>1 from information_schema.global_status where variable_name='innodb_purge_trx_id_age';
variable_value>1
0
set global debug_dbug=@old_dbug;
drop table t;
set debug_sync=reset;

22
mysql-test/suite/gcol/t/innodb_virtual_debug_purge.test
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@ -169,6 +169,26 @@ SELECT * FROM t1;
DROP TABLE t0, t1;
--source include/wait_until_count_sessions.inc
#
# test MDLs with purge
#
create table t (a blob, b blob, c blob as (concat(a,b)), h varchar(10), index (c(100)));
insert t(a,b,h) values (repeat('g', 16000), repeat('x', 16000), "kk");
insert t(a,b,h) values (repeat('a', 16000), repeat('b', 16000), "mm");
set global innodb_purge_stop_now = 1;
set global debug_dbug="+d,ib_purge_virtual_index_callback";
update t set a = repeat('m', 16000) where a like "aaa%";
connect(con1, localhost, root);
lock table t write;
connection default;
set global innodb_purge_run_now=1;
sleep 3;
select variable_value>1 from information_schema.global_status where variable_name='innodb_purge_trx_id_age';
disconnect con1;
sleep 3;
select variable_value>1 from information_schema.global_status where variable_name='innodb_purge_trx_id_age';
set global debug_dbug=@old_dbug;
drop table t;
--source include/wait_until_count_sessions.inc
set debug_sync=reset;