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https://dev.mysql.com/doc/refman/5.7/en/replication-options-source.html
rpl_semi_sync_master_timeout Command-Line Format --rpl-semi-sync-master-timeout=# System Variable rpl_semi_sync_master_timeout Scope Global Dynamic Yes Type Integer Default Value 10000 Minimum Value 0 Maximum Value 4294967295 Unit milliseconds A ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-flow-control.html
This approach works well if the total number of writes to the group does not exceed the write capacity of any member in the group. Whenever the size of one of these queues exceeds the user-defined threshold, the throttling mechanism is triggered.
https://dev.mysql.com/doc/refman/5.7/en/version-tokens-usage.html
The next time the client sends a statement to server 2, its own token list no longer matches the server token list and an error occurs: mysql> UPDATE emp.employee SET salary = salary * 1.1 WHERE id = 4982; ERROR 3136 (42000): Version token mismatch ...Assignment of a server within a certain group can change at any ... Before using Version Tokens, install it according to the instructions ...
https://dev.mysql.com/doc/refman/5.7/en/host-cache.html
(In this case, another DNS resolution attempt occurs the next time a client connects from this IP.) If an error occurs while processing an incoming client connection from a given IP address, the server updates the corresponding error counters in the ... The MySQL server maintains an in-memory host cache that contains information about clients: IP address, host name, and error ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-select-all.html
--connect-retries Command-Line Format --connect-retries=# Type Integer Default Value 12 Minimum Value 0 Maximum Value 12 Number of times to retry connection before giving up. --connect-retry-delay Command-Line Format --connect-retry-delay=# Type ...
https://dev.mysql.com/doc/refman/5.7/en/windows-troubleshooting.html
When installing and running MySQL for the first time, you may encounter certain errors that prevent the MySQL server from starting. The following examples show other common error messages you might encounter when installing MySQL and starting the ...This section helps you diagnose and correct some of these ...The default data directory location is C:\Program Files\MySQL\MySQL Server ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-row-format.html
For example, a CHAR(255) column can exceed 768 bytes if the maximum byte length of the character set is greater than 3, as it is with utf8mb4. For example, a CHAR(255) column can exceed 768 bytes if the maximum byte length of the character set is ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-events-table.html
TIME_ZONE The event time zone, which is the time zone used for scheduling the event and that is in effect within the event as it executes. EXECUTE_AT For a one-time event, this is the DATETIME value specified in the AT clause of the CREATE EVENT ...
https://dev.mysql.com/doc/refman/5.7/en/replication-solutions-unexpected-replica-halt.html
In order for replication to be resilient to unexpected halts of the server (sometimes described as crash-safe) it must be possible for the replica to recover its state before halting. After an unexpected halt of a replica, upon restart the ...This ...
https://dev.mysql.com/doc/refman/5.7/en/partitioning-overview.html
There are no plans at this time to introduce vertical partitioning into MySQL. In addition, MAX_ROWS and MIN_ROWS can be used to determine the maximum and minimum numbers of rows, respectively, that can be stored in each partition. This section ...