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https://dev.mysql.com/doc/refman/5.7/en/rewriter-query-rewrite-plugin-reference.html
Rewriter_reload_error Whether an error occurred the most recent time that the rewrite_rules table was loaded into the in-memory cache used by the Rewriter plugin. If no error occurs when the rules table is loaded into memory, the plugin sets the ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-replication-applier-status-by-coordinator-table.html
LAST_ERROR_TIMESTAMP A timestamp in YYMMDD hh:mm:ss format that shows when the most recent SQL/coordinator error occurred. replication_applier_status_by_coordinator Column SHOW SLAVE STATUS Column THREAD_ID None SERVICE_STATE Slave_SQL_Running ...
https://dev.mysql.com/doc/refman/5.7/en/server-configuration.html
To determine the default command option and system variable values used by the server, execute this command: $> mysqld --verbose --help The command produces a list of all mysqld options and configurable system variables. The following examples ...
https://dev.mysql.com/doc/refman/5.7/en/replication-features-timeout.html
The total retry count can be seen in the output of SHOW STATUS; see Section 5.1.9, “Server Status Variables”.
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-limitations-disk-data.html
Disk data objects are subject to the following maximums and minimums: Maximum number of tablespaces: 232 (4294967296) Maximum number of data files per tablespace: 216 (65536) The minimum and maximum possible sizes of extents for tablespace data ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-connection-tables.html
Suppose that clients named user1 and user2 each connect one time from hosta and hostb. When a client connects to the MySQL server, it does so under a particular user name and from a particular host. They differ in that, for grant tables, the host ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-data-manipulation-statements.html
As there are no primary servers (sources) for any particular data set, every server in the group is allowed to execute transactions at any time, even transactions that change state (RW transactions). Any server may execute a transaction without any ...This coordination serves two purposes: (i) check whether the transaction should commit or not; (ii) and propagate the changes so that other servers can apply the transaction as ...
https://dev.mysql.com/doc/refman/5.7/en/query-cache.html
If an identical statement is received later, the server retrieves the results from the query cache rather than parsing and executing the statement again. Note The query cache is deprecated as of MySQL 5.7.20, and is removed in MySQL 8.0. The query ...
https://dev.mysql.com/doc/refman/5.7/en/replication-features-shutdowns.html
However, the replica notices the network outage only after receiving no data from the source for slave_net_timeout seconds. If your outages are short, you may want to decrease slave_net_timeout. If an unexpected exit occurs between these two ... It ...
https://dev.mysql.com/doc/refman/5.7/en/declare-condition.html
DECLARE condition_name CONDITION FOR condition_value condition_value: { mysql_error_code | SQLSTATE [VALUE] sqlstate_value } The DECLARE ... CONDITION statement declares a named error condition, associating a name with a condition that needs ...The ...