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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-files.html
The files table is empty if no disk data objects have been created in NDB. See Section 25.6.11.1, “NDB Cluster Disk Data Objects”, for more information.
https://dev.mysql.com/doc/refman/8.0/en/mysqlslap.html
mysqlslap runs in three stages: Create schema, table, and optionally any stored programs or data to use for the test. --create=value Command-Line Format --create=value Type String The file or string containing the statement to use for creating the ...Invoke mysqlslap like this: mysqlslap [options] Some options such as --create or --query enable you to specify a string containing an SQL statement or a file containing ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-statement-digests.html
The copy of the normalized statement digest is stored in the appropriate Performance Schema tables, along with the SHA-256 hash value computed from the original normalized statement. Statement Digests in the Performance Schema In the Performance ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-transactions.html
In general, you should avoid transactions that update both transactional and nontransactional tables in a replication environment. You should also avoid using any statement that accesses both transactional (or temporary) and nontransactional tables ...The server uses these rules for binary logging: If the initial statements in a transaction are nontransactional, they are written to the binary log ...
https://dev.mysql.com/doc/refman/8.0/en/identifier-case-sensitivity.html
To avoid problems caused by such differences, it is best to adopt a consistent convention, such as always creating and referring to databases and tables using lowercase names. Value Meaning 0 Table and database names are stored on disk using the ...
https://dev.mysql.com/doc/refman/8.0/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/8.0/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/8.0/en/mysql-cluster-disk-data.html
NDB Cluster supports storing nonindexed columns of NDB tables on disk, rather than in RAM. Column data and logging metadata are kept in data files and undo log files, conceptualized as tablespaces and log file groups, as described in the next ...
https://dev.mysql.com/doc/refman/8.0/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/8.0/en/mysql-cluster-ndbinfo-cluster-transactions.html
The cluster_transactions table shows information about all ongoing transactions in an NDB Cluster. Together with the block name, this number can be used to look up a given instance in the threadblocks table. You can use this along with the block ...