MTR test for checking correctness of fragmentation over CCs

mysql-test/suite/galera/r/galera_gcs_fragment.result

+CREATE TABLE t1 (f1 INT PRIMARY KEY, f2 TEXT);
+SET GLOBAL wsrep_cluster_address='';
+SET SESSION wsrep_sync_wait=0;
+SET GLOBAL wsrep_provider_options = 'dbug=d,gcs_core_after_frag_send';
+SET SESSION wsrep_retry_autocommit=0;
+INSERT INTO t1 VALUES (1, "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
+SET SESSION wsrep_on = 0;
+SET SESSION wsrep_on = 1;
+SET GLOBAL wsrep_provider_options = 'dbug=';
+SET GLOBAL wsrep_cluster_address = 'gcomm://127.0.0.1:13001';
+SET SESSION wsrep_on = 0;
+SET SESSION wsrep_on = 1;
+INSERT INTO t1 VALUES (2, "bbbbbaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
+SET GLOBAL wsrep_provider_options = 'signal=gcs_core_after_frag_send';
+ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
+INSERT INTO t1 VALUES (3, "cccccaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
+SELECT * FROM t1;
+f1	f2
+2	bbbbbaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+3	cccccaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+SELECT * FROM t1;
+f1	f2
+2	bbbbbaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+3	cccccaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+DROP TABLE t1;

mysql-test/suite/galera/t/galera_gcs_fragment.cnf

+!include ../galera_2nodes.cnf
+[mysqld.1]
+wsrep_provider_options='base_port=@mysqld.1.#galera_port;gcs.max_packet_size=64'
+[mysqld.2]
+wsrep_provider_options='base_port=@mysqld.2.#galera_port;gcs.max_packet_size=64'

mysql-test/suite/galera/t/galera_gcs_fragment.test

+# Test fragmentation over configuration changes
+--source include/galera_cluster.inc
+--source include/have_innodb.inc
+
+# Prepare table
+CREATE TABLE t1 (f1 INT PRIMARY KEY, f2 TEXT);
+
+# Stop node2
+
+# Disconnect node_2 from group
+--connection node_2
+--let $wsrep_cluster_address_orig = `select @@wsrep_cluster_address`
+SET GLOBAL wsrep_cluster_address='';
+
+# Connection for sync points
+--connect node_1a, 127.0.0.1, root, , test, $NODE_MYPORT_1
+SET SESSION wsrep_sync_wait=0;
+
+# Set breakpoint in gcs after first fragment send
+
+--let $galera_sync_point = gcs_core_after_frag_send
+--source include/galera_set_sync_point.inc
+
+--connection node_1
+SET SESSION wsrep_retry_autocommit=0;
+--send INSERT INTO t1 VALUES (1, "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
+
+--connection node_1a
+--source include/galera_wait_sync_point.inc
+--source include/galera_clear_sync_point.inc
+
+
+# Restart node_2, wait until it joins the group and then make INSERT
+--connection node_2
+--eval SET GLOBAL wsrep_cluster_address = '$wsrep_cluster_address_orig'
+SET SESSION wsrep_on = 0;
+--source include/galera_wait_ready.inc
+SET SESSION wsrep_on = 1;
+
+INSERT INTO t1 VALUES (2, "bbbbbaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
+
+# Signal node_1 to continue
+--connection node_1a
+--source include/galera_signal_sync_point.inc
+
+# Deadlock error should be returned since write set send was
+# interrupted by gcs
+--connection node_1
+--error ER_LOCK_DEADLOCK
+--reap
+
+# Do additional insert to verify that node_1 remain operational
+INSERT INTO t1 VALUES (3, "cccccaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
+
+
+# Nodes node_1 and node_2 should now contain rows 2 and 3
+SELECT * FROM t1;
+
+--connection node_2
+SELECT * FROM t1;
+
+--connection node_1
+
+DROP TABLE t1;
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