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https://dev.mysql.com/doc/refman/8.0/en/innodb-enabling-monitors.html
InnoDB sends the monitor output to stderr rather than to stdout or fixed-size memory buffers to avoid potential buffer overflows. Also, if monitor output is directed to the error log, the log may become quite large if you forget to disable the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-mgm-definition.html
maxsize: The maximum size (in bytes) to which the file can grow before logging rolls over to a new file. If you plan to deploy a large number of data nodes, it is a good idea to limit the node IDs for management nodes (and API nodes) to values ...
https://dev.mysql.com/doc/refman/8.0/en/replication-solutions-performance.html
If you are using a large number of replicas connected to one source, and that source is also busy processing requests (for example, as part of a scale-out solution), then you may want to improve the performance of the replication process. If heavy ... As the number of replicas connecting to a source increases, the load, although minimal, also increases, as each replica uses a client connection to the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-tips.html
Setting max_join_size to 1,000,000 causes multiple-table SELECT statements to produce an error if the server estimates it must examine more than 1,000,000 row combinations. For example, the left-arrow and right-arrow keys move horizontally within ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-schema.html
Important (NDB 8.0.30 and later:) For insert conflict resolution using NDB$MAX_INS() or NDB$MAX_DEL_WIN_INS(), an SQL node (that is, a mysqld process) can record row updates on the source cluster as WRITE_ROW events with the ...If this becomes an ...
https://dev.mysql.com/doc/refman/8.0/en/replication-administration-status.html
When the replication SQL (applier) thread has caught up on I/O, Seconds_Behind_Source displays 0; but when the replication I/O (receiver) thread is still queuing up a new event, Seconds_Behind_Source may show a large value until the replication ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-mta.html
Writeset Tracking Memory Usage The amount of memory used to track binary log transaction writesets can be set using the binlog_transaction_dependency_history_size server system variable, which defaults to 25000 row hashes. If an average binary log ...In addition, it is recommended that you set the amount of memory used to track binary log transaction writesets on the source (binlog_transaction_dependency_history_size) to E * P, where E is the average epoch size (as the number of operations per epoch) and P is the maximum expected ...
https://dev.mysql.com/doc/refman/8.0/en/general-tablespaces.html
General Tablespace Row Format Support General tablespaces support all table row formats (REDUNDANT, COMPACT, DYNAMIC, COMPRESSED) with the caveat that compressed and uncompressed tables cannot coexist in the same general tablespace due to different ...CREATE TABLESPACE tablespace_name [ADD DATAFILE 'file_name'] [FILE_BLOCK_SIZE = value] [ENGINE [=] engine_name] A general tablespace can be created in the data directory or outside of ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-fulltext-index.html
Consider increasing the number of threads when creating full-text indexes on large tables. To avoid this problem, InnoDB uses a full-text index cache to temporarily cache index table insertions for recently inserted rows. You can query the ...
https://dev.mysql.com/doc/refman/8.0/en/enterprise-encryption-installation.html
To install the component, issue an INSTALL COMPONENT statement: INSTALL COMPONENT "file://component_enterprise_encryption"; INSTALL COMPONENT requires the INSERT privilege for the mysql.component system table because it adds a row to that table to ... In releases before MySQL 8.0.30, the functions provided by MySQL Enterprise Encryption are installed by creating them individually, based on the openssl_udf shared ...