update操作，对应的binlog如下：

connector.getWithoutAck(batchSize)只能获取到TRANSACTIONBEGIN和TRANSACTIONEND，如图

db的配置如下：

[mysqld]

pid-file= /var/run/mysqld/mysqld.pid

socket= /var/run/mysqld/mysqld.sock

datadir= /data/mysql

log-error= /var/log/mysql/error.log

# By default we only accept connections from localhost

#bind-address= 127.0.0.1

# Disabling symbolic-links is recommended to prevent assorted security risks

symbolic-links=0

#自定义参数

explicit_defaults_for_timestamp

lower_case_table_names=1

max_connections = 2000

# Recommended in standard MySQL setup

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

innodb_open_files=65535

max_connect_errors=3500

max_connections=3100

max_user_connections=3000

open_files_limit=65535

#connect_timeout=30

#interactive_timeout=200

#wait_timeout=200

log-bin=mysql-bin #添加这一行就ok

binlog-format=ROW #选择row模式

server_id=1 #配置mysql replaction需要定义，不能和canal的slaveId重复

#skip-name-resolve

innodb_log_file_size=1000M

innodb_buffer_pool_size=2g

innodb_log_buffer_size=10M

innodb_sync_array_size=16

thread_cache_size=256

max_binlog_size=500M

binlog_cache_size=1M

key_buffer_size=8M

#开启慢查询 slow_query_log值为1或on表示开启，为0或off为关闭

slow_query_log=on

#设置慢查询日志放在哪里

slow_query_log_file=mysql-slow

#设置sql执行时间多长为慢查询

long_query_time=2

#表示没有使用索引的sql查询也会记录下来

#log-queries-not-using-indexes

#支持emoji

character-set-server=utf8mb4

collation-server=utf8mb4_unicode_ci