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https://dev.mysql.com/doc/refman/8.0/en/myisam-repair.html
Before you begin, you should change location to the database directory and check the permissions of the table files. The discussion in this section describes how to use myisamchk on MyISAM tables (extensions .MYI and .MYD). You can also use the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-basics.html
NDB Cluster tables are normally stored completely in memory rather than on disk (this is why we refer to NDB Cluster as an in-memory database). This NDB Cluster Connector includes ClusterJ, a high-level database API similar to object-relational ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-information-schema-tables.html
Additional statistical and other data about NDB Cluster transactions, operations, threads, blocks, and other aspects of performance can be obtained from the tables in the ndbinfo database. For information about these tables, see Section 25.6.16, ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-management.html
More detailed information about NDB Cluster operations is available in real time through an SQL interface using the ndbinfo database. For more information, see Section 25.6.16, “ndbinfo: The NDB Cluster Information Database”. Managing an NDB ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndb-api-statistics.html
A number of types of statistical counters relating to actions performed by or affecting Ndb objects are available. Such actions include starting and closing (or aborting) transactions; primary key and unique key operations; table, range, and pruned ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-locks-per-fragment.html
fq_name is a fully qualified database object name in database/schema/name format, such as test/def/t1 or sys/def/10/b$unique. The locks_per_fragment table provides information about counts of lock claim requests, and the outcomes of these requests ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-memory-per-fragment.html
memory_per_fragment Table: Notes memory_per_fragment Table: Examples The memory_per_fragment table provides information about the usage of memory by individual fragments. See the Notes later in this section to see how you can use this to find out ...
https://dev.mysql.com/doc/refman/8.0/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. For nodes that are starting, it also shows the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-option-tables.html
Ndb_pushed_queries_dropped: Number of joins that API nodes have tried to push down, but failed. ndbinfo_offline: Put ndbinfo database into offline mode, in which no rows are returned from tables or views. The following list includes command-line ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-mta.html
This also implies that an NDB binary log with writeset dependencies is not suitable for use by a replica database using a different MySQL storage engine. To use this functionality with NDB Cluster, it is necessary that the following three conditions ...