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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.
47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
# MDEV-20574 Position of events reported by mysqlbinlog is wrong with encrypted binlogs, SHOW BINLOG EVENTS reports the correct one.
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# Test replicating off old master.
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# Test case Desc:- When new server reads the data from old server binlog which
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# does not send START_ENCRYPTION_EVENT to slave.
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# We simulate old master by copying in pre-generated binlog files from earlier
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# server versions with encrypted binlog.
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--source include/have_binlog_format_row.inc
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--source include/master-slave.inc
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--source include/have_innodb.inc
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--connection slave
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--source include/stop_slave.inc
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--connection master
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--let $datadir= `SELECT @@datadir`
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--let $rpl_server_number= 1
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--source include/rpl_stop_server.inc
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--remove_file $datadir/master-bin.000001
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--remove_file $datadir/master-bin.state
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--echo # Data in binlog
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--echo # CREATE TABLE t1 (a INT);
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--echo # INSERT INTO t1 VALUES (1),(2),(3);
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--echo # REPLACE INTO t1 VALUES (4);
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--copy_file $MYSQL_TEST_DIR/std_data/binlog_before_20574.bin $datadir/master-bin.000001
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--let $rpl_server_number= 1
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--source include/rpl_start_server.inc
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--source include/wait_until_connected_again.inc
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--save_master_pos
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--connection slave
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RESET SLAVE;
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RESET MASTER;
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--replace_result $SERVER_MYPORT_1 SERVER_MYPORT_1
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eval CHANGE MASTER TO master_host='127.0.0.1', master_port=$SERVER_MYPORT_1, master_user='root', master_log_file='master-bin.000001', master_log_pos=4;
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--source include/start_slave.inc
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--sync_with_master
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DESC t1;
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SELECT * FROM t1 ORDER BY a;
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DROP TABLE t1;
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--source include/rpl_end.inc
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