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MariaDB adjustments for Oracle Bug#23070734 fix

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Split the test case so that a server restart is not needed.
Reduce the test cases and use a simpler mechanism for triggering
and waiting for purge.

fil_table_accessible(): Check if a table can be accessed without
enjoying MDL protection.
This commit is contained in:
Marko Mäkelä
2017-04-25 18:25:57 +03:00
parent 62dca454e7
commit 849af74a48
12 changed files with 211 additions and 180 deletions
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66
mysql-test/suite/innodb/t/truncate_purge_debug.test Normal file
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--source include/have_innodb.inc
--source include/have_debug.inc
--source include/have_debug_sync.inc
--source include/count_sessions.inc
--echo #
--echo # Bug #23070734 CONCURRENT TRUNCATE TABLES CAUSE STALLS
--echo #
create table t1 (f1 int ,f2 int,key(f2)) engine=innodb;
begin;
insert into t1 values (10,45),(20,78),(30,88),(40,23),(50,78),(60,11),(70,56),(80,90);
delete from t1;
connect (con2,localhost,root,,);
# Stop the purge thread
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
# Ensure that the history list length will actually be decremented by purge.
SET @saved_frequency = @@GLOBAL.innodb_purge_rseg_truncate_frequency;
SET GLOBAL innodb_purge_rseg_truncate_frequency = 1;
commit;
connect (con1,localhost,root,,);
SET DEBUG_SYNC= 'buffer_pool_scan SIGNAL started WAIT_FOR finish_scan';
send truncate table t1;
connection con2;
SET DEBUG_SYNC= 'now WAIT_FOR started';
# Allow purge to proceed, by discarding our read view.
COMMIT;
disconnect con2;
connection default;
# Wait for everything to be purged.
let $wait_counter= 300;
while ($wait_counter)
{
--replace_regex /.*History list length ([0-9]+).*/\1/
let $remaining= `SHOW ENGINE INNODB STATUS`;
if ($remaining == 'InnoDB 0')
{
let $wait_counter= 0;
}
if ($wait_counter)
{
real_sleep 0.1;
dec $wait_counter;
}
}
echo $remaining transactions not purged;
SET GLOBAL innodb_purge_rseg_truncate_frequency = @saved_frequency;
SET DEBUG_SYNC = 'now SIGNAL finish_scan';
SET DEBUG_SYNC = 'RESET';
connection con1;
reap;
disconnect con1;
connection default;
drop table t1;
--source include/wait_until_count_sessions.inc