Search Results
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-ndbinfo-counters.html
Such reads are “simple” from the point of view of the TC block; since they hold no locks they are not durable, and once DBTC has routed them to the relevant LQH block, it holds no state for them. The counters table provides running totals of ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-ndbinfo-tc-time-track-stats.html
transaction_errors Based on duration of failing transactions from start to point of failure, tracked against the API or data nodes requesting them. The tc_time_track_stats table provides time-tracking information obtained from the DBTC block (TC) ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-ndbinfo-threadstat.html
Since this table contains counts taken at a given point in time, for best results it is necessary to query this table periodically and store the results in an intermediate table or tables. The threadstat table provides a rough snapshot of ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-overview-requirements.html
For enhanced reliability, you can use dual switches and dual cards to remove the network as a single point of failure; many device drivers support failover for such communication links. Data node recovery requires synchronization of the failed ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-overview.html
NDB Cluster is designed not to have any single point of failure. NDB Cluster is a technology that enables clustering of in-memory databases in a shared-nothing system. The shared-nothing architecture enables the system to work with very inexpensive ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-privilege-synchronization.html
You should keep in mind that, because shared schema change operations are performed synchronously, the next shared schema change following a change to any shared user or users serves as a synchronization point. Privilege synchronization is the ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-restore.html
Rebuilding of unique indexes uses disk write bandwidth for redo logging and local checkpointing. In such cases you can run ndb_restore --rebuild-indexes again; the process resumes at the point where the error occurred. The NDB Cluster restoration ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-quick.html
To familiarize you with the basics, we describe the simplest possible configuration for a functional NDB Cluster. After this, you should be able to design your desired setup from the information provided in the other relevant sections of this ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-replication-backups.html
This section discusses making backups and restoring from them using NDB Cluster replication. We assume that the replication servers have already been configured as covered previously (see Section 25.7.5, “Preparing the NDB Cluster for ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-replication-conflict-resolution.html
Sets of rows read on the secondary may not necessarily be consistent at a given single point in time. Requirements Source Column Control Conflict Resolution Control Conflict Resolution Functions Conflict Resolution Exceptions Table Conflict ...