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MDEV-30764 : Assertion `transaction.is_streaming()' failed in void wsrep::transaction::adopt(const wsrep::transaction&)

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This is very special case because test first sets
read_only=ON disabling some of the writes. Based
on documentation replication (slave) threads are
not affected by this option. However, threads
executing streaming replication recovery were
effected by read_only setting.

Fix is to set thd->security_ctx->skip_grants()
for streaming replication threads so that
they are not affected by read_only setting.
This commit is contained in:
Jan Lindström 2025-10-17 10:53:40 +03:00 committed by Jan Lindström
parent 34a8209d66
commit 4918fc5780
3 changed files with 167 additions and 0 deletions
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66
mysql-test/suite/galera/r/MDEV-30764.result Normal file
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@ -0,0 +1,66 @@
connection node_2;
connection node_1;
connection node_1;
connection node_2;
connection node_1;
SET GLOBAL wsrep_provider_options ='pc.ignore_sb=true;pc.weight=2';
connection node_2;
SET GLOBAL read_only=1;
SET SESSION wsrep_trx_fragment_size = 64;
set default_storage_engine=SEQUENCE;
SET AUTOCOMMIT = OFF;
CREATE TABLE t1(c1 NUMERIC NOT NULL);
ERROR HY000: Can't create table `test`.`t1` (errno: 131 "Command not supported by the engine")
CREATE TABLE t1 (id INT PRIMARY KEY) engine=innodb;
SET SESSION SQL_MODE='HIGH_NOT_PRECEDENCE';
INSERT INTO t1 VALUES (1),(2),(3);
SET GLOBAL SQL_MODE='NO_ENGINE_SUBSTITUTION';
DROP TABLE dummy;
ERROR 42S02: Unknown table 'test.dummy'
INSERT INTO t1 VALUES('a');
Warnings:
Warning 1366 Incorrect integer value: 'a' for column `test`.`t1`.`id` at row 1
# In this point there should be one fragment
select count(*) AS EXPECT_1 from mysql.wsrep_streaming_log;
EXPECT_1
1
SET @@global.wsrep_cluster_address='gcomm://';
SET SESSION SQL_MODE='TRADITIONAL ';
# Killing cluster because we have messed with wsrep_cluster_address
connection node_2;
SET SESSION wsrep_sync_wait = 0;
Killing server ...
connection node_1;
SET SESSION wsrep_sync_wait = 0;
Killing server ...
connection node_2;
call mtr.add_suppression("WSREP: BF applier thread");
call mtr.add_suppression("WSREP: Event");
call mtr.add_suppression("WSREP: SR trx recovery applying returned 1290");
call mtr.add_suppression("WSREP: Adopting a transaction");
call mtr.add_suppression("WSREP: Could not find applier context for");
call mtr.add_suppression("WSREP: It may not be safe to bootstrap the cluster");
call mtr.add_suppression("WSREP: Failed to vote on request for");
select count(*) AS EXPECT_0 from mysql.wsrep_streaming_log;
EXPECT_0
0
SELECT * FROM t1;
c1
connection node_1;
select count(*) AS EXPECT_0 from mysql.wsrep_streaming_log;
EXPECT_0
0
SELECT * FROM t1;
c1
DROP TABLE t1;
SET GLOBAL wsrep_provider_options ='pc.ignore_sb=false;pc.weight=1';
connection node_2;
connection node_1;
call mtr.add_suppression("WSREP: Event");
call mtr.add_suppression("WSREP: Inconsistency detected: Inconsistent by consensus on");
call mtr.add_suppression("WSREP: Failed to apply write set: gtid");
call mtr.add_suppression("WSREP: It may not be safe to bootstrap the cluster");
call mtr.add_suppression("WSREP: Could not find applier context for");
call mtr.add_suppression("WSREP: Failed to vote on request for");
disconnect node_2;
disconnect node_1;

100
mysql-test/suite/galera/t/MDEV-30764.test Normal file
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@ -0,0 +1,100 @@
--source include/galera_cluster.inc
--source include/have_sequence.inc
# Save original auto_increment_offset values.
--let $node_1=node_1
--let $node_2=node_2
--source include/auto_increment_offset_save.inc
--connection node_1
SET GLOBAL wsrep_provider_options ='pc.ignore_sb=true;pc.weight=2';
--connection node_2
--let $wsrep_cluster_address_saved = `SELECT @@global.wsrep_cluster_address`
SET GLOBAL read_only=1;
SET SESSION wsrep_trx_fragment_size = 64;
set default_storage_engine=SEQUENCE;
SET AUTOCOMMIT = OFF;
--error 1005
CREATE TABLE t1(c1 NUMERIC NOT NULL);
CREATE TABLE t1 (id INT PRIMARY KEY) engine=innodb;
SET SESSION SQL_MODE='HIGH_NOT_PRECEDENCE';
INSERT INTO t1 VALUES (1),(2),(3);
SET GLOBAL SQL_MODE='NO_ENGINE_SUBSTITUTION';
--error 1051
DROP TABLE dummy;
INSERT INTO t1 VALUES('a');
--echo # In this point there should be one fragment
select count(*) AS EXPECT_1 from mysql.wsrep_streaming_log;
SET @@global.wsrep_cluster_address='gcomm://';
SET SESSION SQL_MODE='TRADITIONAL ';
#
# Kill the entire cluster and restart
#
--echo # Killing cluster because we have messed with wsrep_cluster_address
--connection node_2
SET SESSION wsrep_sync_wait = 0;
--source include/kill_galera.inc
--connection node_1
SET SESSION wsrep_sync_wait = 0;
--source include/kill_galera.inc
--remove_file $MYSQLTEST_VARDIR/mysqld.1/data/grastate.dat
--let $start_mysqld_params =--wsrep-new-cluster
--let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
--source include/start_mysqld.inc
--source include/wait_until_ready.inc
--connection node_2
--remove_file $MYSQLTEST_VARDIR/mysqld.2/data/grastate.dat
--let $start_mysqld_params =
--let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/mysqld.2.expect
--source include/start_mysqld.inc
--source include/wait_until_ready.inc
--let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
--source include/wait_condition.inc
call mtr.add_suppression("WSREP: BF applier thread");
call mtr.add_suppression("WSREP: Event");
call mtr.add_suppression("WSREP: SR trx recovery applying returned 1290");
call mtr.add_suppression("WSREP: Adopting a transaction");
call mtr.add_suppression("WSREP: Could not find applier context for");
call mtr.add_suppression("WSREP: It may not be safe to bootstrap the cluster");
call mtr.add_suppression("WSREP: Failed to vote on request for");
select count(*) AS EXPECT_0 from mysql.wsrep_streaming_log;
--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 't1'
--source include/wait_condition.inc
SELECT * FROM t1;
--connection node_1
--let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
--source include/wait_condition.inc
--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 't1'
--source include/wait_condition.inc
select count(*) AS EXPECT_0 from mysql.wsrep_streaming_log;
SELECT * FROM t1;
DROP TABLE t1;
SET GLOBAL wsrep_provider_options ='pc.ignore_sb=false;pc.weight=1';
--connection node_2
--let $wait_condition = SELECT COUNT(*) = 0 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 't1'
--source include/wait_condition.inc
--connection node_1
call mtr.add_suppression("WSREP: Event");
call mtr.add_suppression("WSREP: Inconsistency detected: Inconsistent by consensus on");
call mtr.add_suppression("WSREP: Failed to apply write set: gtid");
call mtr.add_suppression("WSREP: It may not be safe to bootstrap the cluster");
call mtr.add_suppression("WSREP: Could not find applier context for");
call mtr.add_suppression("WSREP: Failed to vote on request for");
# Restore original auto_increment_offset values.
--source include/auto_increment_offset_restore.inc
--source include/galera_end.inc

1
sql/wsrep_server_service.cc
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@ -39,6 +39,7 @@ static void init_service_thd(THD* thd, void* thread_stack)
thd->thread_stack= thread_stack;
thd->real_id= pthread_self();
thd->prior_thr_create_utime= thd->start_utime= microsecond_interval_timer();
thd->security_ctx->skip_grants();
thd->mark_connection_idle();
thd->reset_for_next_command(true);
server_threads.insert(thd); // as wsrep_innobase_kill_one_trx() uses find_thread_by_id()