InnoDB: Error: Table "mysql"."innodb_table_stats" not found.
导致：Seconds_Behind_Master: 27360 mysql主从同步停止
stop slave; 会一直卡住，service mysqld restart后，马上又会停止同步，出现同样问题。
初步判断：
因为innodb_table_stats表丢失，导致主从同步出现问题。
解决办法：
新建innodb_index_stats/innodb_tables_stats/slave_master_info/slave_relay_log_info/slave_worker_info索引表
innodb_index_stats
USE mysqlCREATE TABLE `innodb_index_stats` ( `database_name` varchar(64) COLLATE utf8_bin NOT NULL, `table_name` varchar(64) COLLATE utf8_bin NOT NULL, `index_name` varchar(64) COLLATE utf8_bin NOT NULL, `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, `stat_name` varchar(64) COLLATE utf8_bin NOT NULL, `stat_value` bigint(20) unsigned NOT NULL, `sample_size` bigint(20) unsigned DEFAULT NULL, `stat_description` varchar(1024) COLLATE utf8_bin NOT NULL, PRIMARY KEY (`database_name`,`table_name`,`index_name`,`stat_name`)) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin STATS_PERSISTENT=0;
innodb_table_stats
USE mysqlCREATE TABLE `innodb_table_stats` ( `database_name` varchar(64) COLLATE utf8_bin NOT NULL, `table_name` varchar(64) COLLATE utf8_bin NOT NULL, `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, `n_rows` bigint(20) unsigned NOT NULL, `clustered_index_size` bigint(20) unsigned NOT NULL, `sum_of_other_index_sizes` bigint(20) unsigned NOT NULL, PRIMARY KEY (`database_name`,`table_name`)) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin STATS_PERSISTENT=0;
slave_master_info
USE mysqlCREATE TABLE `slave_master_info` ( `Number_of_lines` int(10) unsigned NOT NULL COMMENT ‘Number of lines in the file.‘, `Master_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT ‘The name of the master binary log currently being read from the master.‘, `Master_log_pos` bigint(20) unsigned NOT NULL COMMENT ‘The master log position of the last read event.‘, `Host` char(64) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT ‘‘ COMMENT ‘The host name of the master.‘, `User_name` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The user name used to connect to the master.‘, `User_password` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The password used to connect to the master.‘, `Port` int(10) unsigned NOT NULL COMMENT ‘The network port used to connect to the master.‘, `Connect_retry` int(10) unsigned NOT NULL COMMENT ‘The period (in seconds) that the slave will wait before trying to reconnect to the master.‘, `Enabled_ssl` tinyint(1) NOT NULL COMMENT ‘Indicates whether the server supports SSL connections.‘, `Ssl_ca` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The file used for the Certificate Authority (CA) certificate.‘, `Ssl_capath` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The path to the Certificate Authority (CA) certificates.‘, `Ssl_cert` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The name of the SSL certificate file.‘, `Ssl_cipher` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The name of the cipher in use for the SSL connection.‘, `Ssl_key` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The name of the SSL key file.‘, `Ssl_verify_server_cert` tinyint(1) NOT NULL COMMENT ‘Whether to verify the server certificate.‘, `Heartbeat` float NOT NULL, `Bind` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘Displays which interface is employed when connecting to the MySQL server‘, `Ignored_server_ids` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The number of server IDs to be ignored, followed by the actual server IDs‘, `Uuid` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The master server uuid.‘, `Retry_count` bigint(20) unsigned NOT NULL COMMENT ‘Number of reconnect attempts, to the master, before giving up.‘, `Ssl_crl` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The file used for the Certificate Revocation List (CRL)‘, `Ssl_crlpath` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The path used for Certificate Revocation List (CRL) files‘, `Enabled_auto_position` tinyint(1) NOT NULL COMMENT ‘Indicates whether GTIDs will be used to retrieve events from the master.‘, PRIMARY KEY (`Host`,`Port`)) ENGINE=InnoDB DEFAULT CHARSET=utf8 STATS_PERSISTENT=0 COMMENT=‘Master Information‘;
slave_relay_log_info
USE mysqlCREATE TABLE `slave_relay_log_info` ( `Number_of_lines` int(10) unsigned NOT NULL COMMENT ‘Number of lines in the file or rows in the table. Used to version table definitions.‘, `Relay_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT ‘The name of the current relay log file.‘, `Relay_log_pos` bigint(20) unsigned NOT NULL COMMENT ‘The relay log position of the last executed event.‘, `Master_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT ‘The name of the master binary log file from which the events in the relay log file were read.‘, `Master_log_pos` bigint(20) unsigned NOT NULL COMMENT ‘The master log position of the last executed event.‘, `Sql_delay` int(11) NOT NULL COMMENT ‘The number of seconds that the slave must lag behind the master.‘, `Number_of_workers` int(10) unsigned NOT NULL, `Id` int(10) unsigned NOT NULL COMMENT ‘Internal Id that uniquely identifies this record.‘, PRIMARY KEY (`Id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8 STATS_PERSISTENT=0 COMMENT=‘Relay Log Information‘;
slave_worker_info
USE mysqlCREATE TABLE `slave_worker_info` ( `Id` int(10) unsigned NOT NULL, `Relay_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL, `Relay_log_pos` bigint(20) unsigned NOT NULL, `Master_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL, `Master_log_pos` bigint(20) unsigned NOT NULL, `Checkpoint_relay_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL, `Checkpoint_relay_log_pos` bigint(20) unsigned NOT NULL, `Checkpoint_master_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL, `Checkpoint_master_log_pos` bigint(20) unsigned NOT NULL, `Checkpoint_seqno` int(10) unsigned NOT NULL, `Checkpoint_group_size` int(10) unsigned NOT NULL, `Checkpoint_group_bitmap` blob NOT NULL, PRIMARY KEY (`Id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8 STATS_PERSISTENT=0 COMMENT=‘Worker Information‘;
或者：
将主mysql中的这5张表mysqldump重新导入。
Step 01 : Goto a DB Server running MySQL 5.6, or install MySQL 5.6 on a test machine.
Step 02 : mysqldump these 5 tables to a text file
INNODB_TABLES="innodb_index_stats"INNODB_TABLES="${INNODB_TABLES} innodb_table_stats"INNODB_TABLES="${INNODB_TABLES} slave_master_info"INNODB_TABLES="${INNODB_TABLES} slave_relay_log_info"INNODB_TABLES="${INNODB_TABLES} slave_worker_info"mysqldump -uroot mysql ${INNODB_TABLES} > InnoDB_MySQL_Tables.sql
前提需要先删除这5张表，在新建或者重新导入。
drop table xx yy uu ii;
参考文档：
时间： 2025-01-04 16:41:32