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https://dev.mysql.com/doc/refman/5.7/en/full-disk.html
This section describes how MySQL responds to disk-full errors (such as “no space left on device”), and to quota-exceeded errors (such as “write failed” or “user block limit reached”). Other threads might be waiting for the table that ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-replication-group-members.html
For more information about the Member_host value and its impact on the distributed recovery process, see Section 17.2.1.3, “User Credentials”. The performance_schema.replication_group_members table is used for monitoring the status of the ...At ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-file-summary-tables.html
In this way, aggregations at higher levels are available directly without the need for user-defined views that sum lower-level columns. The Performance Schema maintains file I/O summary tables that aggregate information about I/O operations. row ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-mutex-instances-table.html
The mutex_instances table lists all the mutexes seen by the Performance Schema while the server executes. A mutex is a synchronization mechanism used in the code to enforce that only one thread at a given time can have access to some common ...The ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-pre-filtering.html
Pre-filtering is done by the Performance Schema and has a global effect that applies to all users. setup_objects controls whether the Performance Schema monitors particular table and stored program objects. Modifications to the setup_actors table ...Pre-filtering can be applied to either the producer or consumer stage of event processing: To configure pre-filtering at the producer stage, several tables can be used: setup_instruments indicates which instruments are ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-schemata-table.html
Caution Because a global privilege is considered a privilege for all databases, any global privilege enables a user to see all database names with SHOW DATABASES or by examining the INFORMATION_SCHEMA SCHEMATA table. A schema is a database, so the ...The SCHEMATA table has these columns: CATALOG_NAME The name of the catalog to which the schema ...
https://dev.mysql.com/doc/refman/5.7/en/replication-rules.html
On the source, you can control which databases to log changes for by using the --binlog-do-db and --binlog-ignore-db options to control binary logging. For a description of the rules that servers use in evaluating these options, see Section ...You ... If a replication source server does not write a statement to its binary log, the statement is not ...
https://dev.mysql.com/doc/refman/5.7/en/replication-threads-monitor-worker.html
A multithreaded replica's coordinator thread also prints statistics to the replica's error log on a regular basis if the verbosity setting is set to display informational messages. If slave_parallel_type is set to DATABASE (rather than ... On a ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-cmp-per-index-table.html
The INNODB_CMP_PER_INDEX and INNODB_CMP_PER_INDEX_RESET tables provide status information on operations related to compressed InnoDB tables and indexes, with separate statistics for each combination of database, table, and index, to help you ...The ...For a compressed InnoDB table, both the table data and all the secondary indexes are ...In this context, the table data is ...
https://dev.mysql.com/doc/refman/5.7/en/index-condition-pushdown-optimization.html
Index Condition Pushdown (ICP) is an optimization for the case where MySQL retrieves rows from a table using an index. Without ICP, the storage engine traverses the index to locate rows in the base table and returns them to the MySQL server which ...With ICP enabled, and if parts of the WHERE condition can be evaluated by using only columns from the index, the MySQL server pushes this part of the WHERE condition down to the storage ...