1select @@global.relay_log_space_limit;
2@@global.relay_log_space_limit
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4select @@session.relay_log_space_limit;
5ERROR HY000: Variable 'relay_log_space_limit' is a GLOBAL variable
6show global variables like 'relay_log_space_limit';
7Variable_name	Value
8relay_log_space_limit	0
9show session variables like 'relay_log_space_limit';
10Variable_name	Value
11relay_log_space_limit	0
12select * from information_schema.global_variables where variable_name='relay_log_space_limit';
13VARIABLE_NAME	VARIABLE_VALUE
14RELAY_LOG_SPACE_LIMIT	0
15select * from information_schema.session_variables where variable_name='relay_log_space_limit';
16VARIABLE_NAME	VARIABLE_VALUE
17RELAY_LOG_SPACE_LIMIT	0
18set global relay_log_space_limit=1;
19ERROR HY000: Variable 'relay_log_space_limit' is a read only variable
20set session relay_log_space_limit=1;
21ERROR HY000: Variable 'relay_log_space_limit' is a read only variable
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