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https://dev.mysql.com/doc/refman/8.0/en/myisam-repair.html
If the data file contains everything that it should and the delete links point at the correct locations within the data file, this should work, and the table is fixed. The discussion in this section describes how to use myisamchk on MyISAM tables ...
https://dev.mysql.com/doc/refman/8.0/en/myisam-table-close.html
When the last instance of a table is closed (because a FLUSH TABLES operation was performed or because there is no room in the table cache), the counter is decremented if the table has been updated at any point. Each MyISAM index file (.MYI file) ...
https://dev.mysql.com/doc/refman/8.0/en/myisamchk-memory.html
If TMPDIR points to a memory file system, out of memory errors can easily occur. The following formula yields the amount of space required: (largest_key + row_pointer_length) * number_of_rows * 2 You can check the length of the keys and the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-config-starting.html
The following config.ini file is a recommended starting point for configuring a cluster running NDB Cluster 8.0: # TCP PARAMETERS [tcp default] SendBufferMemory=2M ReceiveBufferMemory=2M # Increasing the sizes of these 2 buffers beyond the default ...Changes in configuration are also likely to be indicated when changes are made in the platform on which the cluster is run, or in applications that use the NDB Cluster 's ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-connection-strings.html
With the exception of the NDB Cluster management server (ndb_mgmd), each node that is part of an NDB Cluster requires a connection string that points to the management server's location. This connection string is used in establishing a connection ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-disk-data-storage-requirements.html
Each row in a Disk Data table uses 8 bytes in memory to point to the data stored on disk. The following items apply to Disk Data storage requirements: Variable-length columns of Disk Data tables take up a fixed amount of space. For each row, this ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-cluster-operations.html
The cluster_operations table provides a per-operation (stateful primary key op) view of all activity in the NDB Cluster from the point of view of the local data management (LQH) blocks (see The DBLQH Block). (Currently, the MySQL Server does not ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-counters.html
Such reads are “simple” from the point of view of the TC block; since they hold no locks they are not durable, and once DBTC has routed them to the relevant LQH block, it holds no state for them. The counters table provides running totals of ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-tc-time-track-stats.html
transaction_errors Based on duration of failing transactions from start to point of failure, tracked against the API or data nodes requesting them. The tc_time_track_stats table provides time-tracking information obtained from the DBTC block (TC) ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-threadstat.html
Since this table contains counts taken at a given point in time, for best results it is necessary to query this table periodically and store the results in an intermediate table or tables. The threadstat table provides a rough snapshot of ...