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mirror of https://github.com/MariaDB/server.git synced 2025-08-08 11:22:35 +03:00

Merge branch '10.3' into 10.4

This commit is contained in:
Oleksandr Byelkin
2022-01-30 09:46:52 +01:00
440 changed files with 7883 additions and 3481 deletions

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include/master-slave.inc
[connection master]
#
# MDEV-18918 SQL mode EMPTY_STRING_IS_NULL breaks RBR upon CREATE TABLE .. SELECT
#
SET SQL_MODE= 'EMPTY_STRING_IS_NULL';
CREATE TABLE t1 AS SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE 1 = 0;
connection slave;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`TABLE_NAME` varchar(64) CHARACTER SET utf8 NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
connection master;
DROP TABLE t1;
include/rpl_end.inc

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include/master-slave.inc
[connection master]
connection slave;
include/stop_slave.inc
SET @save_dbug= @@GLOBAL.debug_dbug;
SET @@global.debug_dbug="+d,pause_sql_thread_on_fde";
include/start_slave.inc
# Future events must be logged at least 2 seconds after
# the slave starts
connection master;
# Write events to ensure slave will be consistent with master
create table t1 (a int);
insert into t1 values (1);
# Flush logs on master forces slave to generate a Format description
# event in its relay log
flush logs;
connection slave;
# Ignore FDEs that happen before the CREATE/INSERT commands
SET DEBUG_SYNC='now WAIT_FOR paused_on_fde';
SET DEBUG_SYNC='now SIGNAL sql_thread_continue';
SET DEBUG_SYNC='now WAIT_FOR paused_on_fde';
SET DEBUG_SYNC='now SIGNAL sql_thread_continue';
# On the next FDE, the slave should have the master CREATE/INSERT events
SET DEBUG_SYNC='now WAIT_FOR paused_on_fde';
select count(*)=1 from t1;
count(*)=1
1
# The relay log FDE has been processed - here we check to ensure it was
# not considered in Seconds_Behind_Master calculation
connection slave1;
# Safely resume slave SQL thread
SET @@global.debug_dbug='';
SET DEBUG_SYNC='pause_sql_thread_on_fde CLEAR';
SET DEBUG_SYNC='now SIGNAL sql_thread_continue';
SET DEBUG_SYNC='RESET';
connection master;
DROP TABLE t1;
connection slave;
SET @@global.debug_dbug=$save_dbug;
include/rpl_end.inc

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--source include/master-slave.inc
--source include/have_binlog_format_row.inc
--echo #
--echo # MDEV-18918 SQL mode EMPTY_STRING_IS_NULL breaks RBR upon CREATE TABLE .. SELECT
--echo #
SET SQL_MODE= 'EMPTY_STRING_IS_NULL';
CREATE TABLE t1 AS SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE 1 = 0;
--sync_slave_with_master
SHOW CREATE TABLE t1;
--connection master
DROP TABLE t1;
--source include/rpl_end.inc

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#
# Purpose:
# This test validates that a slave's relay log format description event is
# not used to calculate the Seconds_Behind_Master time displayed by
# SHOW SLAVE STATUS.
#
# Methodology:
# Ensure that a slave's reported Seconds_Behind_Master does not point before
# a time in which we can prove that it has progressed beyond. The slave's
# relay log events are created using the timestamp at which the IO thread was
# created. Therefore, after starting the slave's IO thread, we sleep so any
# proceeding events are forced to have later timestamps. After sleeping, we run
# MDL statements on the master and save the time at which they are binlogged.
# Once the slave executes these MDL commands, we have proven that the slave has
# caught up to this saved timestamp. At this point, if the value of
# Seconds_Behind_Master points before the time in which the MDL events were
# logged, it is invalid.
#
# References:
# MDEV-16091: Seconds_Behind_Master spikes to millions of seconds
#
--source include/have_debug.inc
--source include/have_innodb.inc
--source include/master-slave.inc
--connection slave
--source include/stop_slave.inc
SET @save_dbug= @@GLOBAL.debug_dbug;
SET @@global.debug_dbug="+d,pause_sql_thread_on_fde";
--source include/start_slave.inc
--let $sleep_time=2
--echo # Future events must be logged at least $sleep_time seconds after
--echo # the slave starts
--sleep $sleep_time
--connection master
--echo # Write events to ensure slave will be consistent with master
create table t1 (a int);
insert into t1 values (1);
--let $t_master_events_logged= `SELECT UNIX_TIMESTAMP()`
--echo # Flush logs on master forces slave to generate a Format description
--echo # event in its relay log
flush logs;
--connection slave
--echo # Ignore FDEs that happen before the CREATE/INSERT commands
SET DEBUG_SYNC='now WAIT_FOR paused_on_fde';
SET DEBUG_SYNC='now SIGNAL sql_thread_continue';
SET DEBUG_SYNC='now WAIT_FOR paused_on_fde';
SET DEBUG_SYNC='now SIGNAL sql_thread_continue';
--echo # On the next FDE, the slave should have the master CREATE/INSERT events
SET DEBUG_SYNC='now WAIT_FOR paused_on_fde';
select count(*)=1 from t1;
--echo # The relay log FDE has been processed - here we check to ensure it was
--echo # not considered in Seconds_Behind_Master calculation
--connection slave1
let $sbm= query_get_value(SHOW SLAVE STATUS, Seconds_Behind_Master, 1);
--let $t_now= `SELECT UNIX_TIMESTAMP()`
# Ensure Seconds_Behind_Master does not point beyond when we have proven the
# events we have proven to have executed. The extra second is needed as a
# buffer because the recorded times are not exact with when the events were
# recorded on the master.
if(`select $sbm > $t_now - $t_master_events_logged + 1`)
{
die "A relay log event was incorrectly used to set Seconds_Behind_Master";
}
--echo # Safely resume slave SQL thread
SET @@global.debug_dbug='';
SET DEBUG_SYNC='pause_sql_thread_on_fde CLEAR';
SET DEBUG_SYNC='now SIGNAL sql_thread_continue';
# Reset last sql_thread_continue signal
SET DEBUG_SYNC='RESET';
# Cleanup
--connection master
DROP TABLE t1;
--connection slave
SET @@global.debug_dbug=$save_dbug;
--source include/rpl_end.inc