connection node_2; connection node_1; connection node_1; connection node_2; connection node_3; connection node_1; CREATE TABLE test.t1 (f1 INTEGER PRIMARY KEY, f2 CHAR(1)) ENGINE=InnoDB; connection node_2; SET GLOBAL wsrep_on=OFF; INSERT INTO t1 VALUES (1, 'a'); SET GLOBAL wsrep_on=ON; LOCK TABLE t1 WRITE; connection node_1; INSERT INTO t1 VALUES (1, 'b'); SET GLOBAL wsrep_provider_options = 'gmcast.isolate=1'; SET SESSION wsrep_sync_wait=0; connection node_3; SHOW STATUS LIKE 'wsrep_cluster_size'; Variable_name Value wsrep_cluster_size 2 SHOW STATUS LIKE 'wsrep_cluster_status'; Variable_name Value wsrep_cluster_status Primary connection node_2; UNLOCK TABLES; SET SESSION wsrep_on = ON; SET SESSION wsrep_sync_wait = 15; connection node_1; SHOW STATUS LIKE 'wsrep_cluster_status'; Variable_name Value wsrep_cluster_status non-Primary SHOW STATUS LIKE 'wsrep_cluster_size'; Variable_name Value wsrep_cluster_size 1 connection node_2; SET SESSION wsrep_sync_wait=0; SHOW STATUS LIKE 'wsrep_cluster_status'; Variable_name Value wsrep_cluster_status Disconnected SHOW STATUS LIKE 'wsrep_cluster_size'; Variable_name Value wsrep_cluster_size 0 SET GLOBAL wsrep_on=OFF; SELECT * FROM t1; f1 f2 1 a connection node_3; SET SESSION wsrep_sync_wait=0; SHOW STATUS LIKE 'wsrep_cluster_status'; Variable_name Value wsrep_cluster_status Primary SHOW STATUS LIKE 'wsrep_cluster_size'; Variable_name Value wsrep_cluster_size 1 SELECT * FROM t1; f1 f2 1 b # reconnect node #1 connection node_1; SET GLOBAL wsrep_provider_options = 'gmcast.isolate=0'; # reconnect node #2 connection node_2; # restart SHOW STATUS LIKE 'wsrep_cluster_status'; Variable_name Value wsrep_cluster_status Primary SHOW STATUS LIKE 'wsrep_cluster_size'; Variable_name Value wsrep_cluster_size 3 SELECT * FROM t1; f1 f2 1 b connection node_1; SELECT * FROM t1; f1 f2 1 b connection node_2; SELECT * FROM t1; f1 f2 1 b connection node_3; SELECT * FROM t1; f1 f2 1 b DROP TABLE t1; connection node_2; CALL mtr.add_suppression("Slave SQL: Could not execute Write_rows event on table test.t1; Duplicate entry '1' for key 'PRIMARY', Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event's master log FIRST, end_log_pos (.*), Error_code: 1062"); CALL mtr.add_suppression("WSREP: Event (.*) Write_rows_v1 apply failed: 121, seqno "); CALL mtr.add_suppression("WSREP: Inconsistency detected: Inconsistent by consensus on (.*)"); CALL mtr.add_suppression("Plugin 'InnoDB' will be forced to shutdown"); CALL mtr.add_suppression("WSREP: Failed to apply write set: ");