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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-overview.html
When data is stored by the NDB storage engine, the tables (and table data) are stored in the data nodes. Such tables are directly accessible from all other MySQL servers (SQL nodes) in the cluster. NDB Cluster is a technology that enables ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-config.html
All options that can be used with ndb_config are shown in the following table. This tool extracts current configuration information for data nodes, SQL nodes, and API nodes from one of a number of sources: an NDB Cluster management node, or its ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-perror.html
The following table includes all options that are specific to the NDB Cluster program ndb_perror. ndb_perror shows information about an NDB error, given its error code. This includes the error message, the type of error, and whether the error is ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-redo-log-reader.html
Options that can be used with ndb_redo_log_reader are shown in the following table. Reads a redo log file, checking it for errors, printing its contents in a human-readable format, or both. ndb_redo_log_reader is intended for use primarily by NDB ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-secretsfile-reader.html
cac256e18b2ddf6b5ef82d99a72f18e864b78453cc7fa40bfaf0c40b91122d18 These and other options that can be used with ndb_secretsfile_reader are shown in the following table. ndb_secretsfile_reader gets the encryption key from an NDB encryption secrets ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-waiter.html
Options that can be used with ndb_waiter are shown in the following table. ndb_waiter repeatedly (each 100 milliseconds) prints out the status of all cluster data nodes until either the cluster reaches a given status or the --timeout limit is ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-shm-definition.html
See Section 25.4.3.14, “Configuring NDB Cluster Send Buffer Parameters”, and Section 25.6.16.65, “The ndbinfo transporters Table”, for more information. Communications between NDB cluster nodes are normally handled using TCP/IP. The shared ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-server-side-help.html
The proper operation of this command requires that the help tables in the mysql database be initialized with help topic information (see Section 7.1.17, “Server-Side Help Support”). To make a more specific request, please type 'help <item>', ...
https://dev.mysql.com/doc/refman/8.0/en/not-enough-file-handles.html
To tell mysqld to keep open fewer files at a time, you can make the table cache smaller by reducing the value of the table_open_cache system variable (the default value is 64). This may not entirely prevent running out of file descriptors because in ... If you get ERROR 'file_name' not found (errno: 23), Can't open file: file_name (errno: 24), or any other error with errno 23 or errno 24 from MySQL, it means that you have not allocated enough file descriptors for the MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/optimizing-innodb-transaction-management.html
When rows are modified or deleted within a long-running transaction, other transactions using the READ COMMITTED and REPEATABLE READ isolation levels have to do more work to reconstruct the older data if they read those same rows. When a ... To ...