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https://dev.mysql.com/doc/refman/8.4/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/8.4/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/8.4/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 ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-information-schema-examples-compression-sect.html
Example 17.1 Using the Compression Information Schema Tables The following is sample output from a database that contains compressed tables (see Section 17.9, “InnoDB Table and Page Compression”, INNODB_CMP, INNODB_CMP_PER_INDEX, and ...The ...
https://dev.mysql.com/doc/refman/8.4/en/myisam-check.html
To check a MyISAM table, use the following commands: myisamchk tbl_name This finds 99.99% of all errors. If you want to check a table, you should normally run myisamchk without options or with the -s (silent) option. This may take a long time for a ...What it cannot find is corruption that involves only the data file (which is very ...
https://dev.mysql.com/doc/refman/8.4/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/8.4/en/mysql-cluster-ndbinfo-blocks.html
The blocks table is a static table which simply contains the names and internal IDs of all NDB kernel blocks (see NDB Kernel Blocks). It is for use by the other ndbinfo tables (most of which are actually views) in mapping block numbers to block ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-ndbinfo-config-nodes.html
The config_nodes table shows nodes configured in an NDB Cluster config.ini file. For each node, the table displays a row containing the node ID, the type of node (management node, data node, or API node), and the name or IP address of the host on ...The node_type column displays one of the following three values: MGM: Management ...
https://dev.mysql.com/doc/refman/8.4/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/8.4/en/mysql-cluster-ndbinfo-nodes.html
This table contains information on the status of data nodes. For each data node that is running in the cluster, a corresponding row in this table provides the node's node ID, status, and uptime. The nodes table contains the following columns: ...