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################## mysql-test/t/innodb_undo_logs_basic.test ############
# #
# Variable Name: innodb_undo_logs #
# Scope: Global #
# Access Type: Static #
# Data Type: numeric #
# #
# #
# Creation Date: 2011-07-05 #
# Author : Sunny Bains #
# #
# #
# Description: Read-only config global variable innodb_undo_logs #
# * Value check #
# * Scope check #
# #
###############################################################################
--source include/have_innodb.inc
--source include/not_embedded.inc
--disable_query_log
call mtr.add_suppression("The parameter innodb_undo_logs is deprecated and may be removed in future releases");
--enable_query_log
####################################################################
# Display default value #
####################################################################
SELECT @@GLOBAL.innodb_undo_logs;
--echo 128 Expected
####################################################################
# Check if value can be set #
####################################################################
SET @@GLOBAL.innodb_undo_logs=128;
SELECT COUNT(@@GLOBAL.innodb_undo_logs);
--echo 1 Expected
################################################################################
# Check if the value in GLOBAL table matches value in variable #
################################################################################
--disable_warnings
SELECT VARIABLE_VALUE
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='innodb_undo_logs';
--enable_warnings
--echo 128 Expected
################################################################################
# Check if accessing variable with and without GLOBAL point to same variable #
################################################################################
SELECT @@innodb_undo_logs = @@GLOBAL.innodb_undo_logs;
--echo 1 Expected
################################################################################
# Check if innodb_undo_logs can be accessed with and without @@ sign #
################################################################################
SELECT COUNT(@@innodb_undo_logs);
--echo 1 Expected
--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT COUNT(@@local.innodb_undo_logs);
--echo Expected error 'Variable is a GLOBAL variable'
--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT COUNT(@@SESSION.innodb_undo_logs);
--echo Expected error 'Variable is a GLOBAL variable'
--Error ER_BAD_FIELD_ERROR
SELECT innodb_undo_logs = @@SESSION.innodb_undo_logs;
################################################################################
# Begin Bug 13604034
# SET GLOBAL INNODB_UNDO_LOGS=0 SUCCEEDS BUT LEADS TO AN ASSERT
# MAX_UNDO_LOGS > 0
################################################################################
--echo Begin bug 13604034
select @@innodb_undo_logs;
--echo 128 Expected
set global innodb_undo_logs = 129;
select @@innodb_undo_logs;
--echo 128 Expected
set global innodb_undo_logs = 0;
select @@innodb_undo_logs;
--echo 1 Expected
set global innodb_undo_logs = -1;
select @@innodb_undo_logs;
--echo 1 Expected
set global innodb_undo_logs = 50;
select @@innodb_undo_logs;
--echo 50 Expected
set global innodb_undo_logs = default;
select @@innodb_undo_logs;
--echo 128 Expected
--echo End bug 13604034
# End Bug 13604034
################################################################################
# Check that the setting can be set at startup
################################################################################
let $restart_parameters = restart: --innodb-undo-logs=100;
--source include/restart_mysqld.inc
--disable_warnings
SELECT VARIABLE_VALUE
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='innodb_undo_logs';
--enable_warnings
--echo 100 Expected