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mariadb/mysql-test/suite/sys_vars/t/innodb_stats_persistent_basic.test
Marko Mäkelä 9608773f75 MDEV-4750 follow-up: Reduce disabling innodb_stats_persistent
This essentially reverts commit 4e89ec6692
and only disables InnoDB persistent statistics for tests where it is
desirable. By design, InnoDB persistent statistics will not be updated
except by ANALYZE TABLE or by STATS_AUTO_RECALC.

The internal transactions that update persistent InnoDB statistics
in background tasks (with innodb_stats_auto_recalc=ON) may cause
nondeterministic query plans or interfere with some tests that deal
with other InnoDB internals, such as the purge of transaction history.
2021-08-31 13:55:02 +03:00

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#
# innodb_stats_persistent
#
-- source include/have_innodb.inc
SET @save_stats_persistent=@@GLOBAL.innodb_stats_persistent;
# show the default value
SELECT @@innodb_stats_persistent;
# check that it is writeable
SET GLOBAL innodb_stats_persistent=ON;
SELECT @@innodb_stats_persistent;
SET GLOBAL innodb_stats_persistent=OFF;
SELECT @@innodb_stats_persistent;
SET GLOBAL innodb_stats_persistent=1;
SELECT @@innodb_stats_persistent;
SET GLOBAL innodb_stats_persistent=0;
SELECT @@innodb_stats_persistent;
# should be a boolean
-- error ER_WRONG_VALUE_FOR_VAR
SET GLOBAL innodb_stats_persistent=123;
-- error ER_WRONG_VALUE_FOR_VAR
SET GLOBAL innodb_stats_persistent='foo';
# restore the environment
SET GLOBAL innodb_stats_persistent=@save_stats_persistent;