# Setup
CREATE USER sys_user, non_sys_user;
GRANT CONNECTION_ADMIN, SYSTEM_VARIABLES_ADMIN ON *.* TO non_sys_user;
GRANT SYSTEM_USER, CREATE, SELECT, INSERT, EXECUTE,SET_USER_ID,
SYSTEM_VARIABLES_ADMIN ON *.* TO sys_user;
#------------------------------------------------------------------------
# 1. User without SYSTEM_USER privilege cannot the kill query running
#    in the power session
#------------------------------------------------------------------------
SET DEBUG_SYNC= 'before_join_optimize SIGNAL in_sync WAIT_FOR continue';
PREPARE stmt FROM 'SELECT count(*) FROM t1,t2,t3,t4,t5 WHERE a1=a2 AND a2=a3 AND a3=a4 AND a4=a5  ';
EXECUTE stmt;
# Regular session should not be able to to kill the query running in
# power session.
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
KILL QUERY <CONNECTION_ID>;
ERROR HY000: You are not owner of thread <CONNECTION_ID>
SET DEBUG_SYNC= 'now SIGNAL continue';
count(*)
7
SET DEBUG_SYNC= 'before_join_optimize SIGNAL in_sync WAIT_FOR continue';
EXECUTE stmt;
# The running query cannot be killed by non_sys_user user
# even after revoking the SYSTEM_USER privilege from sys_user
REVOKE SYSTEM_USER ON *.* FROM sys_user;
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
KILL QUERY <CONNECTION_ID>;
ERROR HY000: You are not owner of thread <CONNECTION_ID>
SET DEBUG_SYNC= 'now SIGNAL continue';
count(*)
7
SET DEBUG_SYNC= 'before_join_optimize SIGNAL in_sync WAIT_FOR continue';
EXECUTE stmt;
# Another power_session should be able to kill the query.
SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
KILL QUERY <CONNECTION_ID>;
SET DEBUG_SYNC= 'now SIGNAL continue';
# Verify that query was killed
ERROR 70100: Query execution was interrupted
SET DEBUG_SYNC = 'RESET';
# Test Cleanup
DROP USER sys_user, non_sys_user;