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MDEV-26707 SR transaction rolls back locally, but not in cluster

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Update wsrep-lib, and add MTR test case for MDEV-26707

Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>
This commit is contained in:
Daniele Sciascia 2021-09-30 10:36:26 +02:00 committed by Jan Lindström
parent 53c8d559a5
commit b44e12fef1
4 changed files with 250 additions and 1 deletions
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86
mysql-test/suite/galera_3nodes_sr/r/MDEV-26707.result Normal file
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@ -0,0 +1,86 @@
connection node_2;
connection node_1;
connect node_1a, 127.0.0.1, root, , test, $NODE_MYPORT_1;
connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2;
connect node_3, 127.0.0.1, root, , test, $NODE_MYPORT_3;
connect node_3a, 127.0.0.1, root, , test, $NODE_MYPORT_3;
connection node_1;
CREATE TABLE t1 (f1 INTEGER PRIMARY KEY);
connection node_2;
SET SESSION wsrep_trx_fragment_size=1;
BEGIN;
INSERT INTO t1 VALUES (21);
connection node_1;
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_streaming_log;
EXPECT_1
1
connection node_2;
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_streaming_log;
EXPECT_1
1
connection node_3;
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_streaming_log;
EXPECT_1
1
connection node_3a;
SET GLOBAL wsrep_provider_options = 'gmcast.isolate = 1';
SET SESSION wsrep_sync_wait = 0;
SET SESSION wsrep_sync_wait = DEFAULT;
connection node_1a;
SET SESSION wsrep_sync_wait = 0;
SET SESSION wsrep_sync_wait = DEFAULT;
connection node_2a;
SET SESSION wsrep_sync_wait = 0;
SET SESSION wsrep_sync_wait = DEFAULT;
connection node_2;
SET DEBUG_SYNC = 'wsrep_before_certification SIGNAL before_cert WAIT_FOR continue';
COMMIT;
connection node_2a;
SET DEBUG_SYNC = 'now WAIT_FOR before_cert';
SET GLOBAL wsrep_provider_options = 'gmcast.isolate = 1';
SET SESSION wsrep_sync_wait = 0;
SET SESSION wsrep_sync_wait = DEFAULT;
SET DEBUG_SYNC = 'now SIGNAL continue';
connection node_2;
ERROR HY000: Got error 6 "No such device or address" during COMMIT
connection node_2a;
SET DEBUG_SYNC = 'RESET';
connection node_1a;
SET SESSION wsrep_sync_wait = 0;
SET SESSION wsrep_sync_wait = DEFAULT;
connection node_3a;
SET GLOBAL wsrep_provider_options = 'gmcast.isolate = 0';
SET SESSION wsrep_sync_wait = 0;
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_streaming_log;
EXPECT_1
1
SET SESSION wsrep_sync_wait = DEFAULT;
connection node_1a;
SET SESSION wsrep_sync_wait = 0;
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_streaming_log;
EXPECT_1
1
SET SESSION wsrep_sync_wait = DEFAULT;
connection node_2a;
SET GLOBAL wsrep_provider_options = 'gmcast.isolate = 0';
SET SESSION wsrep_sync_wait = DEFAULT;
connection node_1a;
SET SESSION wsrep_sync_wait = 0;
SET SESSION wsrep_sync_wait = DEFAULT;
connection node_3a;
SET SESSION wsrep_sync_wait = 0;
SET SESSION wsrep_sync_wait = DEFAULT;
connection node_1a;
SELECT COUNT(*) AS EXPECT_0 FROM mysql.wsrep_streaming_log;
EXPECT_0
0
connection node_2a;
SELECT COUNT(*) AS EXPECT_0 FROM mysql.wsrep_streaming_log;
EXPECT_0
0
connection node_3a;
SELECT COUNT(*) AS EXPECT_0 FROM mysql.wsrep_streaming_log;
EXPECT_0
0
connection node_1;
DROP TABLE t1;

1
mysql-test/suite/galera_3nodes_sr/suite.pm
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@ -37,6 +37,7 @@ push @::global_suppressions,
qr|WSREP: Protocol violation. JOIN message sender .* is not in state transfer \(SYNCED\). Message ignored.|,
qr|WSREP: Protocol violation. JOIN message sender .* is not in state transfer \(JOINED\). Message ignored.|,
qr(WSREP: Action message in non-primary configuration from member [0-9]*),
qr(WSREP: Last Applied Action message in non-primary configuration from member [0-9]*),
qr|WSREP: .*core_handle_uuid_msg.*|,
qr(WSREP: --wsrep-causal-reads=ON takes precedence over --wsrep-sync-wait=0. WSREP_SYNC_WAIT_BEFORE_READ is on),
qr(WSREP: JOIN message from member .* in non-primary configuration. Ignored.),

162
mysql-test/suite/galera_3nodes_sr/t/MDEV-26707.test Normal file
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#
# MDEV-26707: SR transaction rolls back locally, but not in cluster
#
# This test excercises the following scenario:
# Initially we have a three node cluster where node 2 has an active
# SR transaction that has replicated one fragment.
# Node 3 disconnects from the cluster, followed by disconnect of node 2.
# Node 2 attempts to COMMIT its transaction, but fails because node 2 is
# non-primary. This failure causes the transaction to rolled back locally
# (node 2 can't communicate with the cluster at this point, so rollback
# fragment cannot be sent successfully)
# Node 3 joins back creating non-primary view (node 1, node 3).
# Then node 2 joins back creating primary view (node 1, node 1, node 3).
# If bug is present, we have that node 2 has rolled back locally, while
# the same transaction is still active nodes 1 and 3, leaving entries
# in their wsrep_streaming_log tables.
#
--source include/galera_cluster.inc
--source include/have_debug_sync.inc
--connect node_1a, 127.0.0.1, root, , test, $NODE_MYPORT_1
--connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2
--connect node_3, 127.0.0.1, root, , test, $NODE_MYPORT_3
--connect node_3a, 127.0.0.1, root, , test, $NODE_MYPORT_3
--connection node_1
CREATE TABLE t1 (f1 INTEGER PRIMARY KEY);
--connection node_2
SET SESSION wsrep_trx_fragment_size=1;
BEGIN;
INSERT INTO t1 VALUES (21);
--connection node_1
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_streaming_log;
--connection node_2
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_streaming_log;
--connection node_3
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_streaming_log;
#
# Disconnect node 3 from cluster
#
--connection node_3a
SET GLOBAL wsrep_provider_options = 'gmcast.isolate = 1';
SET SESSION wsrep_sync_wait = 0;
--let $wait_condition = SELECT VARIABLE_VALUE = 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
--source include/wait_condition.inc
SET SESSION wsrep_sync_wait = DEFAULT;
--connection node_1a
SET SESSION wsrep_sync_wait = 0;
--let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
--source include/wait_condition.inc
SET SESSION wsrep_sync_wait = DEFAULT;
--connection node_2a
SET SESSION wsrep_sync_wait = 0;
--let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
--source include/wait_condition.inc
SET SESSION wsrep_sync_wait = DEFAULT;
#
# Issue commit block COMMIT before certification on node 2
#
--connection node_2
SET DEBUG_SYNC = 'wsrep_before_certification SIGNAL before_cert WAIT_FOR continue';
--send COMMIT
--connection node_2a
SET DEBUG_SYNC = 'now WAIT_FOR before_cert';
#
# Disconnect node 2
#
SET GLOBAL wsrep_provider_options = 'gmcast.isolate = 1';
SET SESSION wsrep_sync_wait = 0;
--let $wait_condition = SELECT VARIABLE_VALUE = 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
--source include/wait_condition.inc
SET SESSION wsrep_sync_wait = DEFAULT;
#
# Unblock COMMIT and expect it to fail
#
SET DEBUG_SYNC = 'now SIGNAL continue';
--connection node_2
--error ER_ERROR_DURING_COMMIT
--reap
--connection node_2a
SET DEBUG_SYNC = 'RESET';
--connection node_1a
SET SESSION wsrep_sync_wait = 0;
--let $wait_condition = SELECT VARIABLE_VALUE = 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
--source include/wait_condition.inc
SET SESSION wsrep_sync_wait = DEFAULT;
#
# Reconnect node 3
#
--connection node_3a
SET GLOBAL wsrep_provider_options = 'gmcast.isolate = 0';
SET SESSION wsrep_sync_wait = 0;
--let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
--source include/wait_condition.inc
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_streaming_log;
SET SESSION wsrep_sync_wait = DEFAULT;
--connection node_1a
SET SESSION wsrep_sync_wait = 0;
--let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
--source include/wait_condition.inc
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_streaming_log;
SET SESSION wsrep_sync_wait = DEFAULT;
#
# Reconnect node 2
#
--connection node_2a
SET GLOBAL wsrep_provider_options = 'gmcast.isolate = 0';
--let $wait_condition = SELECT VARIABLE_VALUE = 3 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
--source include/wait_condition.inc
--source include/galera_wait_ready.inc
SET SESSION wsrep_sync_wait = DEFAULT;
--connection node_1a
SET SESSION wsrep_sync_wait = 0;
--let $wait_condition = SELECT VARIABLE_VALUE = 3 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
--source include/wait_condition.inc
--source include/galera_wait_ready.inc
SET SESSION wsrep_sync_wait = DEFAULT;
--connection node_3a
SET SESSION wsrep_sync_wait = 0;
--let $wait_condition = SELECT VARIABLE_VALUE = 3 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
--source include/wait_condition.inc
--source include/galera_wait_ready.inc
SET SESSION wsrep_sync_wait = DEFAULT;
#
# Expect no entries in wsrep_streaming_log
#
--connection node_1a
SELECT COUNT(*) AS EXPECT_0 FROM mysql.wsrep_streaming_log;
--connection node_2a
SELECT COUNT(*) AS EXPECT_0 FROM mysql.wsrep_streaming_log;
--connection node_3a
SELECT COUNT(*) AS EXPECT_0 FROM mysql.wsrep_streaming_log;
--connection node_1
DROP TABLE t1;

2
wsrep-lib

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Subproject commit efb4aab090cb9c1b57b9e7f9988ae1c41f48344f
Subproject commit 22921e7082ddfb45222f21a585aa8b877e62aa8b