460 lines
17 KiB
Plaintext
460 lines
17 KiB
Plaintext
################# suite/perfschema/t/show_plugin.test ##########################
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# #
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# MySQL plugins can define their own status variables and system variables. #
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# This test exercises SHOW STATUS, SHOW VARIABLES and the status and system #
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# variable tables while the EXAMPLE plugin is loaded and unloaded. #
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# #
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# The EXAMPLE plugin defines the following system and status variables: #
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# Global system variables: #
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# example_double_thdvar #
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# example_double_var #
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# example_enum_var #
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# example_ulong_var #
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# #
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# Session variables: #
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# example_double_thdvar - Local and/or global #
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# #
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# Global status: #
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# example_func_example - Status function #
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# #
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################################################################################
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--source include/have_example_plugin.inc
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--source include/have_debug_sync.inc
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--enable_connect_log
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--echo
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--echo ================================================================================
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--echo SETUP
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--echo ================================================================================
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--echo # Save the initial number of concurrent sessions
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--source include/count_sessions.inc
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--echo
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--echo # Verify EXAMPLE plugin is not loaded
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SELECT COUNT(*) = 0 AS "Expect 1" FROM information_schema.plugins WHERE plugin_name = "EXAMPLE";
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--echo
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--echo # Create one session to force local and global system variables;
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connect(con0, localhost, root,,);
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--connection default
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--echo
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--echo ================================================================================
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--echo TEST 1- NO PLUGIN VARS
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--echo ================================================================================
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--source ../include/show_plugin_verifier.inc
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--echo
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--echo ================================================================================
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--echo TEST 2 - PLUGIN LOAD, UNLOAD, RELOAD
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--echo ================================================================================
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--echo ================================================================================
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--echo 2.1 - INSTALL PLUGIN
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--echo ================================================================================
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--replace_regex /\.dll/.so/
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eval INSTALL PLUGIN example SONAME '$EXAMPLE_PLUGIN';
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--echo
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--echo ================================================================================
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--echo 2.1a - FORCE SYNC OF LOCAL AND GLOBAL SYSTEM VARS
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--echo ================================================================================
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--source ../include/show_plugin_verifier.inc
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--disconnect con0
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--echo
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--echo ================================================================================
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--echo 2.2 - SET PLUGIN VARS
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--echo ================================================================================
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--echo # GLOBAL
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SET GLOBAL example_ulong_var = 100;
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SET GLOBAL example_enum_var = e1;
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SET GLOBAL example_double_var = 100.9990;
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SET GLOBAL example_double_thdvar = 101.9991;
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--echo # SESSION
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SET SESSION example_double_thdvar = 102.9992;
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--echo
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--echo ================================================================================
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--echo 2.3 - VERIFY UPDATED PLUGIN VARS
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--echo ================================================================================
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--source ../include/show_plugin_verifier.inc
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--echo
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--echo ================================================================================
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--echo 2.4 - UNINSTALL PLUGIN
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--echo ================================================================================
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UNINSTALL PLUGIN example;
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--echo
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--echo ================================================================================
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--echo 2.5 - VERIFY NO PLUGIN VARS
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--echo ================================================================================
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--source ../include/show_plugin_verifier.inc
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--echo
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--echo ================================================================================
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--echo 2.6 - REINSTALL PLUGIN
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--echo ================================================================================
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--echo # Reinstall EXAMPLE plugin
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--replace_regex /\.dll/.so/
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eval INSTALL PLUGIN example SONAME '$EXAMPLE_PLUGIN';
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--echo
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--echo ================================================================================
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--echo 2.7 - SET PLUGIN VARS AGAIN
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--echo ================================================================================
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--echo # GLOBAL
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SET GLOBAL example_ulong_var = 200;
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SET GLOBAL example_enum_var = e2;
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SET GLOBAL example_double_var = 200.8880;
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SET GLOBAL example_double_thdvar = 201.8881;
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--echo # SESSION
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SET SESSION example_double_thdvar = 202.8882;
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--echo
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--echo ================================================================================
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--echo 2.8 - VERIFY PLUGIN VARS
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--echo ================================================================================
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--source ../include/show_plugin_verifier.inc
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--echo
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--echo ================================================================================
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--echo 2.9 - UNINSTALL PLUGIN
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--echo ================================================================================
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UNINSTALL PLUGIN example;
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--echo
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--echo ================================================================================
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--echo 2.10 - VERIFY NO PLUGIN VARS
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--echo ================================================================================
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--source ../include/show_plugin_verifier.inc
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--echo
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--echo ================================================================================
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--echo TEST 3 - SESSION PLUGIN VARS ON MULTIPLE CONNECTIONS
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--echo ================================================================================
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--echo
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--echo ================================================================================
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--echo 3.1 - INSTALL PLUGIN
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--echo ================================================================================
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--replace_regex /\.dll/.so/
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eval INSTALL PLUGIN example SONAME '$EXAMPLE_PLUGIN';
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--echo
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--echo ================================================================================
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--echo 3.2 - SET GLOBAL AND DEFAULT CONNECTION VARS
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--echo ================================================================================
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--connection default
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SET GLOBAL example_ulong_var = 300;
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SET GLOBAL example_enum_var = e1;
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SET GLOBAL example_double_var = 301.0000;
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SET GLOBAL example_double_thdvar = 302.0000;
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SET SESSION example_double_thdvar = 300.0000;
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--echo
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--echo ================================================================================
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--echo 3.3 - CONNECT 3 CLIENTS, SET LOCAL PLUGIN VARS
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--echo ================================================================================
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connect(con1, localhost, root,,);
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SET SESSION example_double_thdvar = 300.1111;
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--echo
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connect(con2, localhost, root,,);
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SET SESSION example_double_thdvar = 300.2222;
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--echo
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connect(con3, localhost, root,,);
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SET SESSION example_double_thdvar = 300.3333;
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--echo
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--connection default
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--echo
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--echo ================================================================================
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--echo 3.4 - VERIFY GLOBAL AND SESSION PLUGIN VARS
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--echo ================================================================================
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--source ../include/show_plugin_verifier.inc
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--echo
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--echo # Variables by thread
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SELECT variable_name, variable_value FROM performance_schema.variables_by_thread
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WHERE variable_name LIKE "example_%" ORDER BY variable_name, variable_value;
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--echo
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--echo ================================================================================
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--echo 3.5 - DISCONNECT CLIENTS
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--echo ================================================================================
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--connection con1
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--disconnect con1
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--source include/wait_until_disconnected.inc
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--connection con2
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--disconnect con2
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--source include/wait_until_disconnected.inc
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--connection con3
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--disconnect con3
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--source include/wait_until_disconnected.inc
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--connection default
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--echo
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--echo ================================================================================
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--echo 3.6 - VERIFY SESSION VARS ARE REMOVED
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--echo ================================================================================
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--source ../include/show_plugin_verifier.inc
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--echo
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--echo # Variables by thread
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SELECT variable_name, variable_value FROM performance_schema.variables_by_thread
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WHERE variable_name LIKE "example_%" ORDER BY variable_name, variable_value;
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--echo
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--echo ================================================================================
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--echo 3.7 - RECONNECT 3 CLIENTS, SET SESSION VARS FOR EACH
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--echo ================================================================================
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connect(con1, localhost, root,,);
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SET SESSION example_double_thdvar = 311.1111;
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--echo
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connect(con2, localhost, root,,);
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SET SESSION example_double_thdvar = 322.2222;
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--echo
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connect(con3, localhost, root,,);
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SET SESSION example_double_thdvar = 333.3333;
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--echo
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--connection default
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--echo
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--echo ================================================================================
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--echo 3.8 - VERIFY GLOBAL AND SESSION VARS
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--echo ================================================================================
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--source ../include/show_plugin_verifier.inc
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--echo
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--echo # Variables by thread
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SELECT variable_name, variable_value FROM performance_schema.variables_by_thread
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WHERE variable_name LIKE "example_%" ORDER BY variable_name, variable_value;
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--echo
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--echo ================================================================================
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--echo 3.9 - UNINSTALL PLUGIN, LEAVE CLIENTS CONNECTED
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--echo ================================================================================
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UNINSTALL PLUGIN example;
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--echo
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--echo ================================================================================
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--echo 3.10 - VERIFY SESSION VARS ARE REMOVED
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--echo ================================================================================
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--source ../include/show_plugin_verifier.inc
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--echo
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--echo # VARIABLES BY THREAD
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SELECT variable_name, variable_value FROM performance_schema.variables_by_thread
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WHERE variable_name LIKE "example_%" ORDER BY variable_name, variable_value;
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--echo
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--echo ================================================================================
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--echo 3.11 - DISCONNECT CLIENTS
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--echo ================================================================================
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--connection con1
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--disconnect con1
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--source include/wait_until_disconnected.inc
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--connection con2
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--disconnect con2
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--source include/wait_until_disconnected.inc
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--connection con3
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--disconnect con3
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--source include/wait_until_disconnected.inc
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--connection default
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--echo
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--echo ================================================================================
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--echo 3.12 - VERIFY CLIENTS ARE REMOVED
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--echo ================================================================================
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--source ../include/show_plugin_verifier.inc
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--echo
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--echo # VARIABLES BY THREAD
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SELECT variable_name, variable_value FROM performance_schema.variables_by_thread
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WHERE variable_name LIKE "example_%" ORDER BY variable_name, variable_value;
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--echo
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--echo ================================================================================
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--echo TEST 4 - BUG#18008907: DEADLOCK WITH CHANGE_USER, SHOW VARIABLES, INSTALL PLUGIN
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--echo ================================================================================
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--echo
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--disable_result_log
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DELIMITER |;
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CREATE PROCEDURE install_no_such_plugin()
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BEGIN
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INSTALL PLUGIN no_such_plugin SONAME 'no_such_object';
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END|
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--echo
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CREATE PROCEDURE show_vars()
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BEGIN
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-- select on performance_schema.global_variables
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-- will fail, still need to cover execution of the code
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-- to verify potential dead locks.
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declare continue handler for sqlexception
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begin
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end;
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SELECT COUNT(*) FROM performance_schema.global_variables;
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SELECT COUNT(*) FROM performance_schema.global_variables;
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END|
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DELIMITER ;|
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--enable_result_log
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--echo
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--echo ================================================================================
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--echo 4.1 - DEADLOCK SCENARIO 1:
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--echo con1 - has LOCK_system_variables_hash and waits on LOCK_plugin AND
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--echo default - has LOCK_plugin and waits on LOCK_system_variables_hash
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--echo ================================================================================
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connect(con1, localhost, root,,);
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SET DEBUG_SYNC='acquired_LOCK_system_variables_hash SIGNAL install_plugin WAIT_FOR cont_show_vars';
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--send call show_vars();
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--connection default
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SET DEBUG_SYNC='now WAIT_FOR install_plugin';
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SET DEBUG_SYNC='acquired_LOCK_plugin SIGNAL cont_show_vars';
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--send call install_no_such_plugin();
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--connection con1
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--echo
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--echo # Without fix, reap will hang.
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--disable_warnings
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--replace_column 1 #
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--reap;
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--enable_warnings
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SET DEBUG_SYNC='RESET';
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--connection default
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--replace_regex /(Can\'t open shared library).*$/\1/
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--error ER_CANT_OPEN_LIBRARY
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--reap;
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--echo
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SET DEBUG_SYNC='RESET';
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--echo
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--echo ================================================================================
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--echo 4.2 - DEADLOCK SCENARIO 2:
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--echo default - has LOCK_system_variables_hash, waits on LOCK_global_system_variables
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--echo con1 - has LOCK_plugin, waits on LOCK_system_variables_hash AND
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--echo con2 - has LOCK_global_system_variables, waits on LOCK_plugin
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--echo ================================================================================
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SET DEBUG_SYNC='acquired_LOCK_system_variables_hash SIGNAL install_plugin WAIT_FOR nothing TIMEOUT 10';
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--send call show_vars();
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--connection con1
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SET DEBUG_SYNC='now WAIT_FOR install_plugin';
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SET DEBUG_SYNC='acquired_LOCK_plugin SIGNAL create_connection WAIT_FOR nothing TIMEOUT 10';
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--send call install_no_such_plugin();
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connect(con2, localhost, root,,);
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SET DEBUG_SYNC='now WAIT_FOR create_connection';
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--echo
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--echo # Without fix, deadlock situation will occur on timeout of debug_syncs in
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--echo # default and con1. Because of this, change_user operation hangs.
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--echo change_user
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change_user;
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--connection con1
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--replace_regex /(Can\'t open shared library).*$/\1/
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--error ER_CANT_OPEN_LIBRARY
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--reap;
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--echo
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--connection default
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--replace_column 1 #
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--disable_warnings
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--reap;
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--enable_warnings
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--echo
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--disconnect con2
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--echo
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--echo ================================================================================
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--echo 4.3 - DEADLOCK SCENARIO 3: CONCURRENT SHOW VARIABLES AND UNINSTALL PLUGIN
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--echo ================================================================================
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--echo #
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--echo # INSTALL PLUGIN
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--echo #
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--replace_regex /\.dll/.so/
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eval INSTALL PLUGIN example SONAME '$EXAMPLE_PLUGIN';
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--connection con1
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--echo
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--echo # Acquiring LOCK_system_variables_hash and LOCK_plugin_delete
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SET DEBUG_SYNC='acquired_LOCK_system_variables_hash SIGNAL uninstall_plugin WAIT_FOR go';
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--send call show_vars();
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connect(con2, localhost, root,,);
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--echo #
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--echo # UNINSTALL PLUGIN
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--echo #
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SET DEBUG_SYNC='now WAIT_FOR uninstall_plugin';
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--send UNINSTALL PLUGIN example;
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--connection default
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--echo
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--echo # Uninstall will wait until SHOW VARIABLES releases LOCK_plugin_delete.
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let $wait_condition= SELECT count(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST
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WHERE INFO='UNINSTALL PLUGIN example' and
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STATE='System lock';
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--source include/wait_condition.inc
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SET DEBUG_SYNC='now SIGNAL go';
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--echo # Connect con1 - reap
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--connection con1
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--replace_column 1 #
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--disable_warnings
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--reap
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--enable_warnings
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--echo # Connect con2 - reap
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--connection con2
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--disable_warnings
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--reap
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--enable_warnings
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--echo
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--echo ================================================================================
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--echo TEST 5 - BUG#22225549 MYSQL_CHANGE_USER/MYSQL_RESET_CONNECTION + SET INNODB...
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--echo Update to plugin-defined session variable triggers resync with global
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--echo variables and deadlocks on THD::LOCK_thd_sysvar.
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--echo ================================================================================
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#
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# The deadlock occurs when plugin-defined session variables are resynced with the global
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# variables. To force a resync, change the user and update a session variable from a
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# plugin, in this case InnoDB.
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#
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select @@session.innodb_strict_mode;
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let $innodb_strict_mode_save = `select @@session.innodb_strict_mode`;
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select user(), current_user();
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--echo change_user root
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--change_user root
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--echo #
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--echo # Trigger a resync of session variables with global variables.
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--echo #
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set @@session.innodb_strict_mode=off;
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--echo
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--echo # Restore
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--echo
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eval set @@session.innodb_strict_mode=$innodb_strict_mode_save;
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select @@session.innodb_strict_mode;
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--echo
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--echo ================================================================================
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--echo CLEAN UP
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--echo ================================================================================
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--connection default
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--echo
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DROP PROCEDURE show_vars;
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DROP PROCEDURE install_no_such_plugin;
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SET DEBUG_SYNC='RESET';
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--echo
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--disconnect con1
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--disconnect con2
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--disable_connect_log
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--echo
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--echo # Wait till we reached the initial number of concurrent sessions
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--source include/wait_until_count_sessions.inc
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