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https://dev.mysql.com/doc/refman/5.7/en/metadata-locking.html
MySQL uses metadata locking to manage concurrent access to database objects and to ensure data consistency. Metadata locking applies not just to tables, but also to schemas, stored programs (procedures, functions, triggers, scheduled events), ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-cluster-locks.html
The cluster_locks table provides information about current lock requests holding and waiting for locks on NDB tables in an NDB Cluster, and is intended as a companion table to cluster_operations. Information obtain from the cluster_locks table may ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-server-locks.html
The server_locks table is similar in structure to the cluster_locks table, and provides a subset of the information found in the latter table, but which is specific to the SQL node (MySQL server) where it resides. (The cluster_locks table provides ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-security-networking-issues.html
In this section, we discuss basic network security issues as they relate to NDB Cluster. It is extremely important to remember that NDB Cluster “out of the box” is not secure; you or your network administrator must take the proper steps to ...
https://dev.mysql.com/doc/refman/5.7/en/nested-loop-joins.html
MySQL executes joins between tables using a nested-loop algorithm or variations on it. Nested-Loop Join Algorithm Block Nested-Loop Join Algorithm Nested-Loop Join Algorithm A simple nested-loop join (NLJ) algorithm reads rows from the first table ...
https://dev.mysql.com/doc/refman/5.7/en/spatial-function-reference.html
The following table lists each spatial function and provides a short description of each one.
https://dev.mysql.com/doc/refman/5.7/en/using-systemd.html
If you install MySQL from a source distribution on a platform that uses systemd, obtain systemd support for MySQL by configuring the distribution using the -DWITH_SYSTEMD=1 CMake option. The following discussion covers these topics: Overview of ...
https://dev.mysql.com/doc/refman/5.7/en/x-plugin-status-variables.html
If the bind has failed, or if the skip_networking option has been used, the value shows UNDEFINED. Mysqlx_errors_unknown_message_type The number of unknown message types that have been received. Mysqlx_notice_other_sent The number of other types of ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbd-definition.html
Data Memory, Index Memory, and String Memory DataMemory and IndexMemory are [ndbd] parameters specifying the size of memory segments used to store the actual records and their indexes. StringMemory Version (or later) NDB 7.5.0 Type or units % or ...
https://dev.mysql.com/doc/refman/5.7/en/replication-options-binary-log.html
--binlog-do-db=db_name Command-Line Format --binlog-do-db=name Type String This option affects binary logging in a manner similar to the way that --replicate-do-db affects replication. --binlog-ignore-db=db_name Command-Line Format ... Startup ...