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https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-membership.html
The president node is the node viewed by the current node as responsible for setting an arbitrator (see NDB Cluster Start Phases). The membership table describes the view that each data node has of all the others in the cluster, including node ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-tc-time-track-stats.html
Each TC instance tracks latencies for a set of activities it undertakes on behalf of API nodes or other data nodes; these activities include transactions, transaction errors, key reads, key writes, unique index operations, failed key operations of ... The tc_time_track_stats table provides time-tracking information obtained from the DBTC block (TC) instances in the data nodes, through API nodes access ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-transporters.html
This information is shown in the table's status column, which can have any one of the following values: CONNECTING, CONNECTED, DISCONNECTING, or DISCONNECTED. The remote_address is the host name or address for the node whose ID is shown in the ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-params-mgmd.html
HeartbeatThreadPriority: Set heartbeat thread policy and priority for management nodes; see manual for allowed values. The listing in this section provides information about parameters used in the [ndb_mgmd] or [mgm] section of a config.ini file ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-replication-multi-source.html
It is possible to use NDB Cluster for bidirectional replication between two clusters, as well as for circular replication between any number of clusters. This type of circular replication scheme for NDB Cluster, in which the line of replication ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-replication-two-channels.html
First, the mysqld processes for the primary and secondary replication source servers must be started, followed by those for the primary and secondary replicas. In a more complete example scenario, we envision two replication channels to provide ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-rolling-restart.html
A mix of node binaries from different NDB Cluster releases is neither intended nor supported for continuous, long-term use in a production setting. This section discusses how to perform a rolling restart of an NDB Cluster installation, so called ...
https://dev.mysql.com/doc/refman/5.7/en/mysqlbinlog-hexdump.html
For more information about binary log format, see MySQL Internals: The Binary Log. In the example shown, '9d fc 5c 43' is the representation of '051024 17:24:13' in hexadecimal. Master ID: The server ID of the replication source server that created ...
https://dev.mysql.com/doc/refman/5.7/en/ndb-restore-to-different-version.html
In such cases, it is necessary to alter any tables using utf8mb4_ai_ci so that they use a character set supported in the older version prior to performing the backup. The following two sections provide information about restoring a native NDB ...
https://dev.mysql.com/doc/refman/5.7/en/optimizer-tracing-typical-usage.html
To perform optimizer tracing entails the following steps: Enable tracing by executing SET optimizer_trace="enabled=ON". See Section 8.15.3, “Traceable Statements”, for a listing of statements which can be traced. To examine traces for multiple ...You can trace only statements which are executed within the current session; you cannot see traces from other ...