connection node_2;
connection node_1;
USE information_schema;
SELECT * FROM SESSION_VARIABLES WHERE VARIABLE_NAME LIKE "wsrep_dirty_reads";
VARIABLE_NAME	VARIABLE_VALUE
WSREP_DIRTY_READS	OFF
SET GLOBAL wsrep_reject_queries=ALL;
SELECT * FROM SESSION_VARIABLES WHERE VARIABLE_NAME LIKE "wsrep_dirty_reads";
VARIABLE_NAME	VARIABLE_VALUE
WSREP_DIRTY_READS	OFF
SET GLOBAL wsrep_reject_queries=NONE;
SET SESSION wsrep_dirty_reads=TRUE;
SELECT * FROM SESSION_VARIABLES WHERE VARIABLE_NAME LIKE "wsrep_dirty_reads";
VARIABLE_NAME	VARIABLE_VALUE
WSREP_DIRTY_READS	ON