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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-conflict-resolution.html
Requirements Source Column Control Conflict Resolution Control Conflict Resolution Functions Conflict Resolution Exceptions Table Conflict Detection Status Variables Examples When using a replication setup involving multiple sources (including ...
https://dev.mysql.com/doc/refman/8.0/en/mysqldumpslow.html
The MySQL slow query log contains information about queries that take a long time to execute (see Section 7.4.5, “The Slow Query Log”). mysqldumpslow parses MySQL slow query log files and summarizes their contents. Normally, mysqldumpslow ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-object-filtering.html
The setup_objects table controls whether the Performance Schema monitors particular table and stored program objects. The OBJECT_TYPE column indicates the type of object to which a row applies. TABLE filtering affects table I/O events ...
https://dev.mysql.com/doc/refman/8.0/en/slow-query-log.html
The slow query log consists of SQL statements that take more than long_query_time seconds to execute and require at least min_examined_row_limit rows to be examined. The slow query log can be used to find queries that take a long time to execute ...
https://dev.mysql.com/doc/refman/8.0/en/sys-io-global-by-wait-by-latency.html
These views summarize global I/O consumers to display amount of I/O and time waiting for I/O, grouped by event. The io_global_by_wait_by_latency and x$io_global_by_wait_by_latency views have these columns: event_name The I/O event name, with the ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-responses-failure-expel.html
You can use the group_replication_member_expel_timeout system variable, which is available from MySQL 8.0.13, to allow additional time between the creation of a suspicion and the expulsion of the suspect member. A suspicion is created when one ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-quick-start.html
This section briefly introduces the Performance Schema with examples that show how to use it. For additional examples, see Section 29.19, “Using the Performance Schema to Diagnose Problems”. To enable or disable it explicitly, start the server ...
https://dev.mysql.com/doc/refman/8.0/en/sys-schema-table-statistics-with-buffer.html
These views summarize table statistics, including InnoDB buffer pool statistics. By default, rows are sorted by descending total wait time (tables with most contention first). The schema_table_statistics_with_buffer and ...
https://dev.mysql.com/doc/refman/8.0/en/sys-statement-analysis.html
The statement_analysis and x$statement_analysis views have these columns: query The normalized statement string. db The default database for the statement, or NULL if there is none. full_scan The total number of full table scans performed by ...
https://dev.mysql.com/doc/refman/8.0/en/resource-groups.html
MySQL supports creation and management of resource groups, and permits assigning threads running within the server to particular groups so that threads execute according to the resources available to the group. Group attributes enable control over ...