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############################################################################### # # # Variable Name: wait_timeout # # Scope: GLOBAL | SESSION # # Access Type: Dynamic # # Data Type: numeric # # Default Value: # # Range: # # # # # # Creation Date: 2008-03-07 # # Author: Salman Rawala # # # # Modified: HHunger 2008-08-27 Simplified the test and replaced the sleeps. # # # # Description: Test Cases of Dynamic System Variable wait_timeout # # that checks the functionality of this variable # # # # Reference: # # http://dev.mysql.com/doc/refman/5.1/en/server-system-variables.html # # # ############################################################################### --source include/not_embedded.inc --source include/not_threadpool.inc SET @start_value= @@global.wait_timeout; --echo '#--------------------FN_DYNVARS_186_01-------------------------#' ####################################################################### # 1. test of scope session ####################################################################### SET @start_time= UNIX_TIMESTAMP(); --echo connect (test_con1, localhost, root,,); connect (test_con1, localhost, root,,); connection test_con1; # If not explicitly changed, @@session.wait_timeout equals @@global.wait_timeout. SELECT @@session.wait_timeout = @@global.wait_timeout AS 'Expect 1'; # Find a small value <> @@global.wait_timeout. let $session_value = `SELECT IF(@@global.wait_timeout <> 2 OR @@global.wait_timeout IS NULL, 2, 3)`; --replace_result $session_value <session_value> eval SET @@session.wait_timeout = $session_value; --echo connect (test_con2, localhost, root,,); connect (test_con2, localhost, root,,); connection test_con2; --replace_result $session_value <session_value> eval SET @@session.wait_timeout = $session_value - 1; --echo connection default; connection default; --echo wait until connections ready let $wait_condition= SELECT COUNT(*) = 1 FROM information_schema.processlist; --source include/wait_condition.inc SELECT info FROM information_schema.processlist; --echo '#--------------------FN_DYNVARS_186_03-------------------------#' ####################################################################### # 2. test of scope global ####################################################################### # Find a small value <> @@global.wait_timeout. let $global_value = $session_value + 1; --replace_result $global_value <global_value> eval SET @@global.wait_timeout= $global_value; # Changing the @@global.wait_timeout has no influence on the # @@session.wait_timeout of already established sessions. SELECT @@session.wait_timeout = @start_value AS 'Expect 1'; --echo connect (test_con3, localhost, root,,); connect (test_con3, localhost, root,,); connection test_con3; # If not explicitly changed, @@session.wait_timeout equals @@global.wait_timeout. SELECT @@session.wait_timeout = @@global.wait_timeout AS 'Expect 1'; --echo connection default; connection default; # We can be sure that the connections test_con1 and test_con2 must be # established because both have already executed a SET @@session.wait_timeout. # This means they are or at least were visible within the processlist. # Therefore we can now simply wait till both disappear from the processlist. let $wait_condition= SELECT COUNT(*) = 1 FROM information_schema.processlist; --source include/wait_condition.inc SELECT info FROM information_schema.processlist; --replace_result $global_value <global_value> $session_value <session_value>; eval SELECT UNIX_TIMESTAMP() - @start_time >= $global_value + $session_value; SET @@global.wait_timeout= @start_value;