#
# Desync will be done once the global read lock is acquired and resync will be done when 
# it is released.
# Node should temporarily not participate in flow control
# so even if fc_limit has been reached, the master should be able to continue to
# commit transactions.
#

--source include/galera_cluster.inc
--source include/have_innodb.inc

CREATE TABLE t1 (f1 INTEGER) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1);

--connection node_2
--let $wsrep_provider_options_orig = `SELECT @@wsrep_provider_options`
SET GLOBAL wsrep_provider_options = 'gcs.fc_limit=1';

# Block the slave applier thread 
FLUSH TABLES WITH READ LOCK;

--connection node_1

# Without wsrep_desync = TRUE it would not be possible to perform 10 inserts on the master with gcs.fc_limit=1
INSERT INTO t1 VALUES (2);
INSERT INTO t1 VALUES (3);
INSERT INTO t1 VALUES (4);
INSERT INTO t1 VALUES (5);
INSERT INTO t1 VALUES (6);
INSERT INTO t1 VALUES (7);
INSERT INTO t1 VALUES (8);
INSERT INTO t1 VALUES (9);
INSERT INTO t1 VALUES (10);
--sleep 1

--connection node_2
SET SESSION wsrep_sync_wait = 0;
# No updates have arrived after the FLUSH TABLES
SELECT COUNT(*) = 1 FROM t1;

--disable_query_log
--eval SET GLOBAL wsrep_provider_options = '$wsrep_provider_options_orig';
--enable_query_log
UNLOCK TABLES;

SET SESSION wsrep_sync_wait = 1;
# The slave is now fully caught up
SELECT COUNT(*) = 10 FROM t1;

--connection node_1
INSERT INTO t1 VALUES (11);

--connection node_2
# Replication continues normally
SELECT COUNT(*) = 11 FROM t1;

CALL mtr.add_suppression("Protocol violation");
DROP TABLE t1;

--connection node_1
CALL mtr.add_suppression("Protocol violation");
