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https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl-space-requirements.html
Temporary log files: A temporary log file records concurrent DML when an online DDL operation creates an index or alters a table. If the operation takes a long time and concurrent DML modifies the table so much that the size of the temporary log ...
https://dev.mysql.com/doc/refman/8.0/en/show-columns.html
The data types may differ from what you expect them to be based on a CREATE TABLE statement because MySQL sometimes changes data types when you create or alter a table. SHOW [EXTENDED] [FULL] {COLUMNS | FIELDS} {FROM | IN} tbl_name [{FROM | IN} ...
https://dev.mysql.com/doc/refman/8.0/en/show-engine.html
An NdbTransaction is created each time a table schema operation (such as CREATE TABLE or ALTER TABLE) is performed on an NDB table. Note InnoDB mutexes and rwlocks can also be monitored using Performance Schema tables. Interpret buffer names as ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-backup-id.html
This table provides a way to find the ID of the backup started most recently for this cluster. The backup_id table contains a single column id, which corresponds to a backup ID taken using the ndb_mgm client START BACKUP command.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-config-values.html
The config_values table provides information about the current state of node configuration parameter values. Each row in the table corresponds to the current value of a parameter on a given node. The config_values table contains the following ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-foreign-keys.html
The foreign_keys table provides information about foreign keys on NDB tables.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-logbuffers.html
The logbuffer table provides information on NDB Cluster log buffer usage. The logbuffers table contains the following columns: node_id The ID of this data node. One each of these log_type rows is shown in the logbuffers table for each data node in ...One of these rows has the log type BACKUP-DATA, which shows the amount of data buffer used during backup to copy fragments to backup ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-threadstat.html
The threadstat table provides a rough snapshot of statistics for threads running in the NDB kernel. Since this table contains counts taken at a given point in time, for best results it is necessary to query this table periodically and store the ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-directory.html
If a DATA DIRECTORY or INDEX DIRECTORY table option is used in a CREATE TABLE statement on the source server, the table option is also used on the replica. This can be overridden by using the NO_DIR_IN_CREATE server SQL mode on the replica, which ...This can cause problems if no corresponding directory exists in the replica host file system or if it exists but is not accessible to the replica MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-truncate.html
TRUNCATE TABLE is normally regarded as a DML statement, and so would be expected to be logged and replicated using row-based format when the binary logging mode is ROW or MIXED. However this caused issues when logging or replicating, in STATEMENT ...