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https://dev.mysql.com/doc/refman/8.0/en/stored-routines-privileges.html
The MySQL grant system takes stored routines into account as follows: The CREATE ROUTINE privilege is needed to create stored routines. The ALTER ROUTINE privilege is needed to alter or drop stored routines. This privilege is granted automatically ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-transporter-details.html
sendbuffer_max_used_bytes The maximum amount, in bytes, of signal data awaiting send at any one time by this transporter. sendbuffer_max_alloc_bytes Maxmimum amount of send buffer, in bytes, allocated for signal data storage at any one time for this ... This table contains information about individual NDB transporters, rather than aggregate information as shown by the transporters ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-locks-per-fragment.html
This table also shows the total time spent waiting for locks successfully and unsuccessfully since fragment or table creation, or since the most recent restart. This is also true for the time values shown in the wait_ok_millis and wait_fail_millis ... The locks_per_fragment table provides information about counts of lock claim requests, and the outcomes of these requests on a per-fragment basis, serving as a companion table to operations_per_fragment and ...
https://dev.mysql.com/doc/refman/8.0/en/explain.html
row *************************** EXPLAIN: -> Filter: (t3.i > 8) (cost=1.75 rows=5) (actual time=0.019..0.021 rows=6 loops=1) -> Table scan on t3 (cost=1.75 rows=15) (actual time=0.017..0.019 rows=15 loops=1) mysql> EXPLAIN ANALYZE SELECT * FROM t3 ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-shm-definition.html
For optimum performance, you can define a spin time for the SHM transporter (ShmSpinTime parameter); this affects both the data node receiver thread and the poll owner (receive thread or user thread) in NDB. ShmSpinTime Version (or later) NDB 8.0.13 ... Communications between NDB cluster nodes are normally handled using ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-redo-log.html
InnoDB tries to maintain 32 redo log files in total, with each file equal in size to 1/32 * innodb_redo_log_capacity; however, file sizes may differ for a time after modifying the innodb_redo_log_capacity setting. Stop the MySQL server and make sure ... The redo log is a disk-based data structure used during crash recovery to correct data written by incomplete ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-backup-concepts.html
A backup is a snapshot of the database at a given time. The data actually stored in the database tables at the time that the backup was made Transaction log. A sequential record telling how and when data was stored in the database Each of these ...
https://dev.mysql.com/doc/refman/8.0/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/refman/8.0/en/mysql-cluster-ndbinfo-diskstats-1sec.html
The diskstats_1sec table provides information about writes to Disk Data tablespaces over the past 20 seconds.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-operations-per-fragment.html
This currently has the following formats: Base table: DbName/def/TblName BLOB table: DbName/def/NDB$BLOB_BaseTblId_ColNo Ordered index: sys/def/BaseTblId/IndexName Unique index: sys/def/BaseTblId/IndexName$unique The $unique suffix shown for unique ... The operations_per_fragment table provides information about the operations performed on individual fragments and fragment replicas, as well as about some of the results from these ...