mirror of
https://github.com/MariaDB/server.git
synced 2025-02-09 23:24:11 +01:00
eb4458e993
The current semi-sync binlog fail-over recovery process uses rpl_semi_sync_slave_enabled==TRUE as its condition to truncate a primary server’s binlog, as it is anticipating the server to re-join a replication topology as a replica. However, for servers configured with both rpl_semi_sync_master_enabled=1 and rpl_semi_sync_slave_enabled=1, if a primary is just re-started (i.e. retaining its role as master), it can truncate its binlog to drop transactions which its replica(s) has already received and executed. If this happens, when the replica reconnects, its gtid_slave_pos can be ahead of the recovered primary’s gtid_binlog_pos, resulting in an error state where the replica’s state is ahead of the primary’s. This patch changes the condition for semi-sync recovery to truncate the binlog to instead use the configuration variable --init-rpl-role, when set to SLAVE. This allows for both rpl_semi_sync_master_enabled and rpl_semi_sync_slave_enabled to be set for a primary that is restarted, and no transactions will be lost, so long as --init-rpl-role is not set to SLAVE. Reviewed By: ============ Sergei Golubchik <serg@mariadb.com>
59 lines
2.6 KiB
Text
59 lines
2.6 KiB
Text
# ==== Purpose ====
|
|
#
|
|
# Test verifies truncation of multiple binary logs with multiple transactional
|
|
# storage engines
|
|
#
|
|
# ==== References ====
|
|
#
|
|
# MDEV-21117: recovery for --rpl-semi-sync-slave-enabled server
|
|
|
|
--source include/have_rocksdb.inc
|
|
--source include/have_innodb.inc
|
|
--source include/have_debug.inc
|
|
--source include/have_debug_sync.inc
|
|
--source include/have_binlog_format_row.inc
|
|
|
|
--let $old_max_binlog_size= `select @@global.max_binlog_size`
|
|
call mtr.add_suppression("Can.t init tc log");
|
|
call mtr.add_suppression("Aborting");
|
|
--let $MYSQLD_DATADIR= `SELECT @@datadir`
|
|
|
|
SET @@global.sync_binlog= 1;
|
|
CREATE TABLE t1 (a INT PRIMARY KEY, b MEDIUMTEXT) ENGINE=Innodb;
|
|
CREATE TABLE t2 (a INT PRIMARY KEY, b MEDIUMTEXT) ENGINE=rocksdb;
|
|
|
|
--let $case = "A"
|
|
--let $description = "neither engine committed => rollback & binlog truncate"
|
|
# Hold off engine commits after write to binlog and its rotation.
|
|
# The transaction is killed along with the server after that.
|
|
--let $shutdown_timeout=0
|
|
--let $debug_sync_action = "commit_after_release_LOCK_log SIGNAL con1_ready WAIT_FOR signal_no_signal"
|
|
--let $restart_parameters = --init-rpl-role=SLAVE --sync-binlog=1
|
|
--let $test_outcome= 1 row should be present in both tables; binlog is truncated; number of binlogs at reconnect - 3
|
|
--source binlog_truncate_multi_engine.inc
|
|
--echo Proof of the truncated binlog file is readable (two transactions must be seen):
|
|
--exec $MYSQL_BINLOG --short-form --skip-annotate-row-events $MYSQLD_DATADIR/master-bin.000002
|
|
|
|
--let $case = "B"
|
|
--let $description = "one engine has committed its transaction branch"
|
|
# Hold off after one engine has committed.
|
|
--let $shutdown_timeout=0
|
|
--let $debug_sync_action = ""
|
|
# Both debug_sync and debug-dbug are required to make sure Engines remember the commit state
|
|
# debug_sync alone will not help.
|
|
--let $restart_parameters = --init-rpl-role=SLAVE --sync-binlog=1
|
|
--let $test_outcome= 2 rows should be present in both tables; no binlog truncation; one extra binlog file compare with A; number of binlogs at reconnect - 4
|
|
--source binlog_truncate_multi_engine.inc
|
|
|
|
--let $case = "C"
|
|
--let $description= "both engines have committed its transaction branch"
|
|
--let $debug_sync_action = "commit_after_run_commit_ordered SIGNAL con1_ready"
|
|
# Hold off after both engines have committed. The server is shut down.
|
|
--let $shutdown_timeout=
|
|
--let $restart_parameters = --init-rpl-role=SLAVE --sync-binlog=1
|
|
--let $test_outcome= 2 rows should be present in both tables; no binlog truncation; the same # of binlog files as in B; number of binlogs at reconnect - 4
|
|
--source binlog_truncate_multi_engine.inc
|
|
|
|
DROP TABLE t1, t2;
|
|
SET @@global.sync_binlog= default;
|
|
--echo # End of the tests
|