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https://dev.mysql.com/doc/refman/8.0/en/keyring-hashicorp-plugin.html
(For production use, such a certificate should be added.) The second command creates a single unseal key with a requirement for a single unseal key to be present for unsealing. Note The keyring_hashicorp plugin is an extension included in MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/keywords.html
Certain keywords, such as SELECT, DELETE, or BIGINT, are reserved and require special treatment for use as identifiers such as table and column names. This may also be true for the names of built-in functions. Some keywords which are otherwise ...
https://dev.mysql.com/doc/refman/8.0/en/known-issues.html
This section lists known issues in recent versions of MySQL. For information about platform-specific issues, see the installation and debugging instructions in Section 2.1, “General Installation Guidance”, and Section 7.9, “Debugging MySQL”. The following problems are known: Subquery optimization for IN is not as effective as for ...
https://dev.mysql.com/doc/refman/8.0/en/load-index.html
tbl_index_list: tbl_name [PARTITION (partition_list)] [{INDEX|KEY} (index_name[, index_name] ...)] [IGNORE LEAVES] partition_list: { partition_name[, partition_name] ... | ALL } The LOAD INDEX INTO CACHE statement preloads a table index into the key ...
https://dev.mysql.com/doc/refman/8.0/en/making-trace-files.html
In a console window, use this command: C:\> mysqld-debug --debug --standalone After this, you can use the mysql.exe command-line tool in a second console window to reproduce the problem. If the mysqld server does not start or it crashes easily, you ...
https://dev.mysql.com/doc/refman/8.0/en/metadata-locking.html
For example, a second session blocks if it attempts any of these operations: DROP TABLE t; ALTER TABLE t ...; DROP TABLE nt; ALTER TABLE nt ...; LOCK TABLE t ... MySQL uses metadata locking to manage concurrent access to database objects and to ...
https://dev.mysql.com/doc/refman/8.0/en/monitor-innodb-mutex-waits-performance-schema.html
Because waits are timed in picoseconds (trillionths of a second) by default, wait times are divided by 1000000000 to show wait times in milliseconds. A mutex is a synchronization mechanism used in the code to enforce that only one thread at a given ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-added-deprecated-removed.html
KeepAliveSendInterval: Time between keep-alive signals on links between data nodes, in milliseconds. Ndb_api_wait_nanos_count_replica: Total time (in nanoseconds) spent waiting for some type of signal from data nodes by this replica. Parameters ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-api-definition.html
ArbitrationDelay Version (or later) NDB 8.0.13 Type or units milliseconds Default 0 Range 0 - 4294967039 (0xFFFFFEFF) Restart Type Node Restart: Requires a rolling restart of the cluster. (NDB 8.0.13) Setting this parameter to any other value than 0 ... The [mysqld] and [api] sections in the config.ini file define the behavior of the MySQL servers (SQL nodes) and other applications (API nodes) used to access cluster ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-basics.html
Global Checkpoint (GCP): A GCP occurs every few seconds, when transactions for all nodes are synchronized and the redo-log is flushed to disk. NDBCLUSTER (also known as NDB) is an in-memory storage engine offering high-availability and ...