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############################################################################### # # # Variable Name: sort_buffer_size # # Scope: Global/Session # # Access Type: Dynamic # # Data Type: numeric # # # # # # Creation Date: 2012-08-31 # # Author : Tanjot Singh Uppal # # # # # # Description:Test Cases of Dynamic System Variable sort_buffer_size # # that checks the behavior of this variable in the following ways # # * Value Check # # * Scope Check # # * Functionality Check # # * Accessability Check # # # ############################################################################### -- source include/have_innodb.inc -- source include/not_embedded.inc -- source include/no_valgrind_without_big.inc -- source include/have_innodb_16k.inc --echo '#---------------------WL6372_VAR_8_01----------------------#' #################################################################### # Checking default value # #################################################################### SELECT COUNT(@@GLOBAL.sort_buffer_size); --echo 1 Expected SELECT COUNT(@@SESSION.sort_buffer_size); --echo 1 Expected SELECT @@GLOBAL.sort_buffer_size; --echo 262144 Expected SELECT @@SESSION.sort_buffer_size; --echo 262144 Expected --echo '#---------------------WL6372_VAR_8_02----------------------#' ################################################################################# # Checking the Default value post starting the server with other value # ################################################################################# --echo # Restart server with sort_buffer_size 9999999; let $restart_file= $MYSQLTEST_VARDIR/tmp/mysqld.1.expect; --exec echo "wait" > $restart_file --shutdown_server --source include/wait_until_disconnected.inc -- exec echo "restart:--sort_buffer_size=9999999 " > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect -- enable_reconnect -- source include/wait_until_connected_again.inc SELECT @@GLOBAL.sort_buffer_size; --echo 9999999 Expected SET @@GLOBAL.sort_buffer_size=DEFAULT; SELECT @@GLOBAL.sort_buffer_size; --echo 262144 Expected --echo '#---------------------WL6372_VAR_8_03----------------------#' #################################################################### # Checking Value can be set - Dynamic # #################################################################### SET @@local.sort_buffer_size=9999999; SET @@session.sort_buffer_size=9999999; SET @@GLOBAL.sort_buffer_size=9999999; SET @@local.sort_buffer_size=DEFAULT; SET @@session.sort_buffer_size=DEFAULT; SET @@GLOBAL.sort_buffer_size=DEFAULT; SELECT @@GLOBAL.sort_buffer_size; --echo 262144 Expected # The below check is hashed until the BUG#14635304 is fixed #SELECT @@SESSION.sort_buffer_size; #--echo 262144 Expected #SELECT @@LOCAL.sort_buffer_size; #--echo 262144 Expected --echo '#---------------------WL6372_VAR_8_04----------------------#' ################################################################# # Check if the value in GLOBAL Table matches value in variable # ################################################################# --disable_warnings SELECT @@GLOBAL.sort_buffer_size = VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='sort_buffer_size'; --echo 1 Expected SELECT @@session.sort_buffer_size = VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME='sort_buffer_size'; --echo 1 Expected SELECT COUNT(@@GLOBAL.sort_buffer_size); --echo 1 Expected SELECT COUNT(VARIABLE_VALUE) FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='sort_buffer_size'; --echo 1 Expected --enable_warnings --echo '#---------------------WL6372_VAR_8_05----------------------#' ################################################################################ # Checking Variable Scope # ################################################################################ SELECT @@sort_buffer_size = @@GLOBAL.sort_buffer_size; --echo 0 Expected SELECT COUNT(@@sort_buffer_size); --echo 1 Expected SELECT COUNT(@@local.sort_buffer_size); --echo 1 Expected SELECT COUNT(@@SESSION.sort_buffer_size); --echo 1 Expected SELECT COUNT(@@GLOBAL.sort_buffer_size); --echo 1 Expected --Error ER_BAD_FIELD_ERROR SELECT sort_buffer_size = @@SESSION.sort_buffer_size; --echo Expected error 'Unknown column sort_buffer_size in field list' --echo '#---------------------WL6372_VAR_8_06----------------------#' ################################################################################ # Checking boundary values # ################################################################################ --disable_warnings SET @@GLOBAL.sort_buffer_size=32767; SET @@session.sort_buffer_size=32767; --enable_warnings SELECT @@GLOBAL.sort_buffer_size; --echo 32768 Expected select @@session.sort_buffer_size; --echo 32768 Expected --disable_warnings SET @@global.sort_buffer_size=-1; SET @@session.sort_buffer_size=-1; --enable_warnings select @@session.sort_buffer_size; --echo 32768 Expected SELECT @@GLOBAL.sort_buffer_size; --echo 32768 Expected ################################################################################ # The MAX value is not being tested as would # # differ on a 32 bit machine and a 64 bit machine # ################################################################################ --echo '#---------------------WL6372_VAR_8_07----------------------#' ################################################################################ # Checking the /Var directory size # ################################################################################ -- source include/vardir_size_check.inc --echo TRUE Expected --echo '#---------------------WL6372_VAR_8_08----------------------#' ################################################################################ # Checking the sort buffer functionality when data is more than 32K # ################################################################################ --echo # create a table let $table = tab1; --source include/create_table.inc --echo #insert some 10 records let $i = 10; --source include/Load_data.inc flush status; flush table; SET @@GLOBAL.sort_buffer_size=32768; SET @@SESSION.sort_buffer_size=32768; --disable_warnings select variable_value from information_schema.session_status where variable_name ='Sort_merge_passes'; --echo 0 Expected select variable_value from information_schema.session_status where variable_name ='Sort_rows'; --echo 0 Expected select variable_value from information_schema.session_status where variable_name ='Sort_scan'; --enable_warnings --echo 0 Expected --disable_warnings set @Sort_merge_passes = (select variable_value from information_schema.session_status where variable_name ='Sort_merge_passes'); set @Sort_rows = (select variable_value from information_schema.session_status where variable_name ='Sort_rows'); set @Sort_scan = (select variable_value from information_schema.session_status where variable_name ='Sort_scan'); --enable_warnings set @optimizer_switch_saved=@@optimizer_switch; set optimizer_switch='derived_merge=off'; select count(1) from (select b.* from tab1 b inner join tab1 c inner join tab1 d inner join tab1 e inner join tab1 f order by 1) a; --echo 100000 Expected --disable_warnings select ( select variable_value from information_schema.global_status where variable_name ='Sort_merge_passes') = @Sort_merge_passes + 537; --echo 1 Expected select (select variable_value from information_schema.global_status where variable_name ='Sort_rows') = @Sort_rows + 100000; --echo 1 Expected select (select variable_value from information_schema.global_status where variable_name ='Sort_scan') = @Sort_scan + 1; --enable_warnings --echo 1 Expected select count(1) from (select b.* from tab1 b inner join tab1 c inner join tab1 d inner join tab1 e inner join tab1 f order by 1) a; --echo 100000 Expected --disable_warnings select ( select variable_value from information_schema.global_status where variable_name ='Sort_merge_passes') = @Sort_merge_passes + 1074; --echo 1 Expected select (select variable_value from information_schema.global_status where variable_name ='Sort_rows') = @Sort_rows + 200000; --echo 1 Expected select (select variable_value from information_schema.global_status where variable_name ='Sort_scan') = @Sort_scan + 2; --enable_warnings --echo 1 Expected set @@optimizer_switch=@optimizer_switch_saved; --echo #cleanup DROP TABLE IF EXISTS tab1; SET @@session.sort_buffer_size=DEFAULT; SET @@GLOBAL.sort_buffer_size=DEFAULT;