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怎么解决 MySQL 中的 5.6.x InnoDB Error Table mysql.innodb_table_stats not found
这篇文章主要介绍“怎么解决 MySQL 中的 5.6.x InnoDB Error Table mysql.innodb_table_stats not found”，在日常操作中，相信很多人在怎么解决 MySQL 中的 5.6.x InnoDB Error Table mysql.innodb_table_stats not found 问题上存在疑惑，丸趣 TV 小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”怎么解决 MySQL 中的 5.6.x InnoDB Error Table mysql.innodb_table_stats not found”的疑惑有所帮助！接下来，请跟着丸趣 TV 小编一起来学习吧！
【问题描述】：
检查 error log 的时候发现大量 warnings：
[Warning] InnoDB Error Table mysql.innodb_index_stats not found
[Warning] InnoDB Error Table mysql.innodb_table_stats not found
[Warning] InnoDB Error Table mysql.slave_master_info not found
[Warning] InnoDB Error Table mysql.slave_relay_log_info not found
[Warning] InnoDB Error Table mysql.slave_worker_info not found
或在打开 innodb 表时，在 err-log 里会打印出：
InnoDB: Error: Table mysql . innodb_table_stats not found.
Error: Fetch of persistent statistics requested for table {databse_name} . {table_name} but the required system tables mysql.innodb_table_stats and mysql.innodb_index_stats are not present or have unexpected structure. Using transient stats instead.
【解决方案】：
先看看能否 drop table，如果说表不存在，则继续下一步。
DROP TABLE mysql.innodb_index_stats;
DROP TABLE mysql.innodb_table_stats;
DROP TABLE mysql.slave_master_info;
DROP TABLE mysql.slave_relay_log_info;
DROP TABLE mysql.slave_worker_info;
删除 datadir 下 mysql 数据库中的这五张表的 frm 文件（如有 ibd 也一并删除）
rm -rf $datadir/mysql/innodb_index_stats.*
rm -rf $datadir/mysql/innodb_table_stats.*
rm -rf $datadir/mysql/slave_master_info.*
rm -rf $datadir/mysql/slave_relay_log_info.*
rm -rf $datadir/mysql/slave_worker_info.*
再执行如下语句，重新创建这五张表：
USE mysql;
CREATE 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;
CREATE 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;
CREATE 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
CREATE 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
CREATE 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
最后重启 mysqld 即可。
到此，关于“怎么解决 MySQL 中的 5.6.x InnoDB Error Table mysql.innodb_table_stats not found”的学习就结束了，希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习，快去试试吧！若想继续学习更多相关知识，请继续关注丸趣 TV 网站，丸趣 TV 小编会继续努力为大家带来更多实用的文章！
