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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/mysql-cluster-online-add-node.html
Important Currently, you must add new data nodes to an NDB Cluster as part of a new node group. In addition, it is not possible to change the number of fragment replicas (or the number of nodes per node group) online. This section describes how to ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-shm-definition.html
Group Version (or later) NDB 8.0.13 Type or units unsigned Default 35 Range 0 - 200 Restart Type Node Restart: Requires a rolling restart of the cluster. (NDB 8.0.13) Determines the group proximity; a smaller value is interpreted as being closer.
https://dev.mysql.com/doc/refman/8.0/en/ndb-restore-different-number-nodes.html
Note When changing the total number of LCP threads or LQH threads per node group, you should recreate the schema from backup created using mysqldump. This step is necessary only if the total number of LCP threads or LQH threads per node group is ...
https://dev.mysql.com/doc/refman/8.0/en/network-namespace-support.html
Group Replication, only when using the MySQL communication stack to establish group communication connections (from MySQL 8.0.27). A network namespace is a logical copy of the network stack from the host system. Network namespaces are useful for ...
https://dev.mysql.com/doc/refman/8.0/en/order-by-optimization.html
(This is the first table in the EXPLAIN output that does not have a const join type.) The query has different ORDER BY and GROUP BY expressions. (The resulting sort order may be completely different from the order for ABS(a), of course.) SELECT ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-selection.html
You can also use aggregate functions with HAVING and GROUP BY options. Explicit selection of partitions and subpartitions for rows matching a given WHERE condition is supported. Partition selection is similar to partition pruning, in that only ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-binary-log-transaction-compression-stats-table.html
Compressed transactions are grouped by the compression algorithm used, and uncompressed transactions are grouped together with the compression algorithm stated as NONE, so the compression ratio can be calculated. This table shows statistical ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-filtering-names.html
Names given for filtering operations can be as specific or general as required. For example, to select all file I/O instruments, it is better to use a pattern that includes the entire instrument name prefix: ... WHERE NAME LIKE 'wait/io/file/%'; A ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-firewall-membership-table.html
The firewall_membership table has these columns: GROUP_ID The group profile name. The firewall_membership table provides a view into the in-memory data cache for MySQL Enterprise Firewall. It is used in conjunction with the ...