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https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-ndbinfo-diskstat.html
The diskstat table provides information about writes to Disk Data tablespaces during the past 1 second.
https://dev.mysql.com/doc/internals/en/open.html
The second parameter determines what file to open or what operation to take. Synopsis virtual int open ( name, mode, test_if_locked); const char * name ; int mode ; uint test_if_locked ; Description This is the open method. For instance when a ...
https://dev.mysql.com/doc/refman/8.4/en/replication-features-timeout.html
Transactions are automatically retried when the SQL thread fails to execute them because of an InnoDB deadlock, or when the transaction's execution time exceeds the InnoDB innodb_lock_wait_timeout value. The global value of the system variable ...
https://dev.mysql.com/doc/refman/8.4/en/create-logfile-group.html
There can be only one log file group per NDB Cluster instance at any given time. The optional UNDO_BUFFER_SIZE parameter sets the size used by the undo buffer for the log file group; The default value for UNDO_BUFFER_SIZE is 8M (eight megabytes); ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-config.html
(To obtain configuration data from the management node instead, simply omit this option.) --connect-retries Command-Line Format --connect-retries=# Type Integer Default Value 12 Minimum Value 0 Maximum Value 12 Number of times to retry connection ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-params-api.html
ConnectBackoffMaxTime: Specifies longest time in milliseconds (~100ms resolution) to allow between connection attempts to any given data node by this API node. Excludes time elapsed while connection attempts are ongoing, which in worst case can take ...ArbitrationDelay: When asked to arbitrate, arbitrator waits this many milliseconds before ... The listing in this section provides information about parameters used in the ...
https://dev.mysql.com/doc/mysql-cluster-manager/8.4/en/mcm-attribute-tables-api.html
ConnectBackoffMaxTime: Specifies longest time in milliseconds (~100ms resolution) to allow between connection attempts to any given data node by this API node. Excludes time elapsed while connection attempts are ongoing, which in worst case can take ...ArbitrationDelay: When asked to arbitrate, arbitrator waits this many milliseconds before ...
https://dev.mysql.com/doc/internals/en/memory-allocation-mysql-server.html
Things that are needed a longer time should be alllocated with my_malloc() or through another MEMROOT. The basic logic to use: All things that are used only for the duration of a query are allocated in THD::mem_root through sql_alloc() or ...
https://dev.mysql.com/doc/refman/8.4/en/audit-log-file-reading.html
The plugin opens each remaining candidate file, verifies that the file actually contains JSON audit events, and sorts the files using the timestamps from the first event of each file. For example: [ { "timestamp": "2020-05-18 13:39:33", "id": 0, ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-innodb-buffer-pool-stats-table.html
PAGES_MADE_YOUNG_RATE The number of pages made young per second (pages made young since the last printout / time elapsed). PAGES_MADE_NOT_YOUNG_RATE The number of pages not made per second (pages not made young since the last printout / time ... The ...