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Current File : /usr/local/mysql/mysql-test/suite/galera/t/galera_sequences_recovery.test
#
# Test sequences crash recovery.
#

--source include/galera_cluster.inc
--source include/have_sequence.inc
--source include/big_test.inc

--disable_ps2_protocol

#
# Case 1: Crash a node during a transaction, bring the
# sequence in sync by receiving higher current value
#
--connection node_1
CREATE SEQUENCE s INCREMENT=0 CACHE=5 ENGINE=InnoDB;
CREATE TABLE t1 (f1 INT PRIMARY KEY DEFAULT NEXTVAL(s), f2 INT) ENGINE=InnoDB;

--connection node_1
BEGIN;
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);

--connection node_2
BEGIN;
INSERT INTO t1(f2) values (2);
INSERT INTO t1(f2) values (2);
INSERT INTO t1(f2) values (2);

# Crash and restart the node, losing the transaciton
--source include/kill_galera.inc
--let $start_mysqld_params =
--let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/mysqld.2.expect
--source include/start_mysqld.inc

# Check and update the last written sequence value
SELECT NEXTVAL(s);

--connection node_1
# Update the sequence value further
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);

COMMIT;
SELECT LASTVAL(s);
SELECT * FROM t1;

--connection node_2
# The next value should be in sync now, but the last
# value is still the same
SELECT LASTVAL(s);
SELECT NEXTVAL(s);
SELECT * FROM t1;

--connection node_1
DROP TABLE t1;
DROP SEQUENCE s;

#
# Case 2: Crash a node during a transaction, bring the
# sequence in sync by sending higher current value
#
--connection node_1
CREATE SEQUENCE s INCREMENT=0 CACHE=5 ENGINE=InnoDB;
CREATE TABLE t1 (f1 INT PRIMARY KEY DEFAULT NEXTVAL(s), f2 INT) ENGINE=InnoDB;

--connection node_1
BEGIN;
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);

--connection node_2
# Exhaust the cached values once, but no replication happens even
# though the sequnce table is updated
BEGIN;
INSERT INTO t1(f2) values (2);
INSERT INTO t1(f2) values (2);
INSERT INTO t1(f2) values (2);
INSERT INTO t1(f2) values (2);
INSERT INTO t1(f2) values (2);
INSERT INTO t1(f2) values (2);

# Crash and restart the node, losing the transaciton
--source include/kill_galera.inc
--let $start_mysqld_params =
--let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/mysqld.2.expect
--source include/start_mysqld.inc

--connection node_1
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);
INSERT INTO t1(f2) values (1);

COMMIT;
SELECT LASTVAL(s);
SELECT * FROM t1;

--connection node_2
# Check and update the last written sequence value, it's still
# higher than the one from the other node
SELECT NEXTVAL(s);
SELECT * FROM t1;

--connection node_1
# The next value should be in sync now, but the last
# value is still the same
SELECT LASTVAL(s);
SELECT NEXTVAL(s);

--connection node_1
DROP TABLE t1;
DROP SEQUENCE s;

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