binlog_format 为 ROW 的分析

墨蓝 2023-02-21 06:21 2阅读 0赞

os: centos 7.4.1708  
db: mysql 8.0.20

# 版本 #

# cat /etc/centos-release
    CentOS Linux release 7.4.1708 (Core) 
    # 
    # 
    # yum list installed |grep -i mysql80
    mysql-community-client.x86_64              8.0.20-1.el7                @mysql80-community
    mysql-community-common.x86_64              8.0.20-1.el7                @mysql80-community
    mysql-community-devel.x86_64               8.0.20-1.el7                @mysql80-community
    mysql-community-libs.x86_64                8.0.20-1.el7                @mysql80-community
    mysql-community-libs-compat.x86_64         8.0.20-1.el7                @mysql80-community
    mysql-community-server.x86_64              8.0.20-1.el7                @mysql80-community
    mysql-community-test.x86_64                8.0.20-1.el7                @mysql80-community
    mysql80-community-release.noarch           el7-3                       installed
    
    # mysql -e "select version();"
    +-----------+
    | version() |
    +-----------+
    | 8.0.20    |
    +-----------+

# binlog\_format = ROW #

# vi /etc/my.cnf
    
    binlog_format = ROW

# systemctl restart mysqld.service
    # mysql
    
    mysql> use test;
    
    mysql> show variables like 'log_bin';
    +---------------+-------+
    | Variable_name | Value |
    +---------------+-------+
    | log_bin       | ON    |
    +---------------+-------+
    1 row in set (0.00 sec)
    
    mysql> show variables like 'binlog_format';
    +---------------+-------+
    | Variable_name | Value |
    +---------------+-------+
    | binlog_format | ROW   |
    +---------------+-------+
    1 row in set (0.01 sec)
    
    mysql> show master status;
    +---------------+----------+--------------+------------------+-------------------+
    | File          | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
    +---------------+----------+--------------+------------------+-------------------+
    | binlog.000024 |      156 |              |                  |                   |
    +---------------+----------+--------------+------------------+-------------------+
    1 row in set (0.00 sec)
    
    mysql> insert into tmp_t0 values(1,'1','1'),(2,'2','2');
    Query OK, 2 rows affected (0.33 sec)
    Records: 2  Duplicates: 0  Warnings: 0
    
    mysql> show master status;
    +---------------+----------+--------------+------------------+-------------------+
    | File          | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
    +---------------+----------+--------------+------------------+-------------------+
    | binlog.000024 |      467 |              |                  |                   |
    +---------------+----------+--------------+------------------+-------------------+
    1 row in set (0.00 sec)

# /usr/bin/mysqlbinlog --no-defaults --base64-output=decode-rows -v --start-position=156 --stop-position=467  /var/lib/mysql/binlog.000024
    
    /*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;
    /*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;
    DELIMITER /*!*/;
    # at 125
    #200629  9:20:22 server id 1  end_log_pos 125 CRC32 0xb7bca599 	Start: binlog v 4, server v 8.0.20 created 200629  9:20:22 at startup
    # Warning: this binlog is either in use or was not closed properly.
    ROLLBACK/*!*/;
    # at 156
    #200629  9:21:53 server id 1  end_log_pos 235 CRC32 0xd499075e 	Anonymous_GTID	last_committed=0	sequence_number=1	rbr_only=yes	original_committed_timestamp=1593393713676335	immediate_commit_timestamp=1593393713676335	transaction_length=311
    /*!50718 SET TRANSACTION ISOLATION LEVEL READ COMMITTED*//*!*/;
    # original_commit_timestamp=1593393713676335 (2020-06-29 09:21:53.676335 CST)
    # immediate_commit_timestamp=1593393713676335 (2020-06-29 09:21:53.676335 CST)
    /*!80001 SET @@session.original_commit_timestamp=1593393713676335*//*!*/;
    /*!80014 SET @@session.original_server_version=80020*//*!*/;
    /*!80014 SET @@session.immediate_server_version=80020*//*!*/;
    SET @@SESSION.GTID_NEXT= 'ANONYMOUS'/*!*/;
    # at 235
    #200629  9:21:53 server id 1  end_log_pos 310 CRC32 0x9744271c 	Query	thread_id=8	exec_time=0	error_code=0
    SET TIMESTAMP=1593393713/*!*/;
    SET @@session.pseudo_thread_id=8/*!*/;
    SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1/*!*/;
    SET @@session.sql_mode=1168113696/*!*/;
    SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/;
    /*!\C utf8mb4 *//*!*/;
    SET @@session.character_set_client=255,@@session.collation_connection=255,@@session.collation_server=255/*!*/;
    SET @@session.lc_time_names=0/*!*/;
    SET @@session.collation_database=DEFAULT/*!*/;
    /*!80011 SET @@session.default_collation_for_utf8mb4=255*//*!*/;
    BEGIN
    /*!*/;
    # at 310
    #200629  9:21:53 server id 1  end_log_pos 371 CRC32 0xc46cb76d 	Table_map: `test`.`tmp_t0` mapped to number 86
    # at 371
    #200629  9:21:53 server id 1  end_log_pos 436 CRC32 0x7664abb3 	Write_rows: table id 86 flags: STMT_END_F
    ### INSERT INTO `test`.`tmp_t0`
    ### SET
    ###   @1=1
    ###   @2='1'
    ###   @3='1'
    ### INSERT INTO `test`.`tmp_t0`
    ### SET
    ###   @1=2
    ###   @2='2'
    ###   @3='2'
    # at 436
    #200629  9:21:53 server id 1  end_log_pos 467 CRC32 0x976464f4 	Xid = 12
    COMMIT/*!*/;
    SET @@SESSION.GTID_NEXT= 'AUTOMATIC' /* added by mysqlbinlog */ /*!*/;
    DELIMITER ;
    # End of log file
    /*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
    /*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;

参考:  
https://dev.mysql.com/doc/refman/8.0/en/binary-log-setting.html