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https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndb-innodb-engines.html
The NDB storage engine is implemented using a distributed, shared-nothing architecture, which causes it to behave differently from InnoDB in a number of ways. For those unaccustomed to working with NDB, unexpected behaviors can arise due to its ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-resources.html
DISK_OPERATIONS: If a log file group is allocated, the size of the undo log buffer is used to set the size of this resource. This resource is used only to allocate the undo log buffer for an undo log file group; there can only be one such group.
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-options-variables.html
(This is the default behavior.) Proximity is determined as follows: Start with the value set for the Group parameter (default 55). Assuming the default value for Group, the effective value for data nodes on same host as the API node is 54, and for ... This section provides information about MySQL server options, server and status variables that are specific to NDB ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-quick-start.html
Tables in the performance_schema database can be grouped according to the type of information in them: Current events, event histories and summaries, object instances, and setup (configuration) information. For detailed information about the tables ... This section briefly introduces the Performance Schema with examples that show how to use ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-summary-tables.html
The tables in this group summarize event data in different ways. Each summary table has grouping columns that determine how to group the data to be aggregated, and summary columns that contain the aggregated values. Tables that summarize events in ... Summary tables provide aggregated information for terminated events over ...
https://dev.mysql.com/doc/refman/5.7/en/server-plugins.html
Group Replication enables you to create a highly available distributed MySQL service across a group of MySQL server instances, with data consistency, conflict detection and resolution, and group membership services all built-in. MySQL supports an ...
https://dev.mysql.com/doc/refman/5.7/en/stop-slave.html
Note that the Group Replication applier channel (group_replication_applier) has no replication I/O thread, only a replication SQL thread. If the current replication event group has modified one or more nontransactional tables, STOP SLAVE waits for ...] thread_type: IO_THREAD | SQL_THREAD channel_option: FOR CHANNEL channel Stops the replication ...
https://dev.mysql.com/doc/refman/5.7/en/upgrading-from-previous-series.html
Implementation of the ONLY_FULL_GROUP_BY SQL mode has been made more sophisticated, to no longer reject deterministic queries that previously were rejected. In consequence, ONLY_FULL_GROUP_BY is now enabled by default, to prohibit nondeterministic ... Before upgrading to MySQL 5.7, review the changes described in this section to identify those that apply to your current MySQL installation and ...
https://dev.mysql.com/doc/refman/5.7/en/data-directory-initialization.html
Either create the account if it does not exist (see Create a mysql User and Group), or substitute the name of a different existing login account that you plan to use for running the server. Also make sure to specify as necessary other parameters ...
https://dev.mysql.com/doc/refman/5.7/en/extensions-to-ansi.html
You don't need to name all selected columns in the GROUP BY clause. You can specify ASC and DESC with GROUP BY, not just with ORDER BY. MySQL Server supports some extensions that are likely not to be found in other SQL DBMSs. Be warned that if you ...