mirror of
https://github.com/MariaDB/server.git
synced 2025-07-21 21:22:27 +03:00
27664ef29d
Analysis Mysqlbinlog output for encrypted binary log #Q> insert into tab1 values (3,'row 003') #190912 17:36:35 server id 10221 end_log_pos 980 CRC32 0x53bcb3d3 Table_map: `test`.`tab1` mapped to number 19 # at 940 #190912 17:36:35 server id 10221 end_log_pos 1026 CRC32 0xf2ae5136 Write_rows: table id 19 flags: STMT_END_F Here we can see Table_map_log_event ends at 980 but Next event starts at 940. And the reason for that is we do not send START_ENCRYPTION_EVENT to the slave Solution:- Send Start_encryption_log_event as Ignorable_log_event to slave(mysqlbinlog), So that mysqlbinlog can update its log_pos. Since Slave can request multiple FORMAT_DESCRIPTION_EVENT while master does not have so We only update slave master pos when master actually have the FORMAT_DESCRIPTION_EVENT. Similar logic should be applied for START_ENCRYPTION_EVENT. Also added the test case when new server reads the data from old server which does not send START_ENCRYPTION_EVENT to slave. Master Slave Upgrade Scenario. When Slave is updated first, Slave will have extra logic of handling START_ENCRYPTION_EVENT But master willnot be sending START_ENCRYPTION_EVENT. So there will be no issue. When Master is updated first, It will send START_ENCRYPTION_EVENT to slave , But slave will ignore this event in queue_event.
28 lines
662 B
Plaintext
28 lines
662 B
Plaintext
include/master-slave.inc
|
|
[connection master]
|
|
connection slave;
|
|
include/stop_slave.inc
|
|
connection master;
|
|
include/rpl_stop_server.inc [server_number=1]
|
|
# Data in binlog
|
|
# CREATE TABLE t1 (a INT);
|
|
# INSERT INTO t1 VALUES (1),(2),(3);
|
|
# REPLACE INTO t1 VALUES (4);
|
|
include/rpl_start_server.inc [server_number=1]
|
|
connection slave;
|
|
RESET SLAVE;
|
|
RESET MASTER;
|
|
CHANGE MASTER TO master_host='127.0.0.1', master_port=SERVER_MYPORT_1, master_user='root', master_log_file='master-bin.000001', master_log_pos=4;
|
|
include/start_slave.inc
|
|
DESC t1;
|
|
Field Type Null Key Default Extra
|
|
a int(11) YES NULL
|
|
SELECT * FROM t1 ORDER BY a;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
4
|
|
DROP TABLE t1;
|
|
include/rpl_end.inc
|