18.1.4 MySQL Cluster Development History

18.1.4.1 MySQL Cluster Development in MySQL Cluster NDB 7.3
18.1.4.2 MySQL Cluster Development in MySQL Cluster NDB 7.4

In the following two sections, we discuss changes in the implementation of MySQL Cluster in MySQL MySQL Cluster NDB 7.3 and MySQL Cluster NDB 7.4, as compared to MySQL Cluster NDB 7.2 and earlier releases. Changes and features most likely to be of interest are shown in the following two tables:

MySQL Cluster NDB 7.3
MySQL Cluster NDB 7.3 is based on MySQL 5.6. For more information about new features in MySQL Server 5.6, see Section 1.4, “What Is New in MySQL 5.6”.
MySQL Cluster NDB 7.3 supports foreign key constraints on tables. See Section 1.8.3.2, “FOREIGN KEY Constraints”, and Section 13.1.17.2, “Using FOREIGN KEY Constraints”, for more information.
MySQL Cluster NDB 7.3 provides support for Node.js using the MySQL NoSQL Connector for JavaScript. See MySQL NoSQL Connector for JavaScript, for more information.
MySQL Cluster NDB 7.4
MySQL Cluster NDB 7.4 is based on MySQL 5.6 (For more information about new features in MySQL Server 5.6, see Section 1.4, “What Is New in MySQL 5.6”)
MySQL Cluster Replication conflict detection and resolution enhancements, including extensions to conflict exceptions tables (see Section 18.6.11, “MySQL Cluster Replication Conflict Resolution”)
Improvements in the management of circular (active-active) replication; primary/secondary assignment with ndb_slave_conflict_role
Per-fragment memory usage reporting in the memory_per_fragment table
A number of performance improvements, including the following enhancements:
Improved error and other reporting during node restarts

These sections contain information about MySQL Cluster NDB 7.3 releases through 5.6.21-ndb-7.3.8, which is now available as a General Availability release, and MySQL Cluster NDB 7.4 releases through 5.6.21-ndb-7.4.2, which is now available as a Developer Milestone release. MySQL Cluster NDB 7.2 and MySQL Cluster NDB 7.1 are previous GA release series which are still supported, although we recommend that new deployments use MySQL Cluster NDB 7.3. For information about MySQL Cluster NDB 7.2 and previous MySQL Cluster releases, see MySQL Cluster NDB 7.2, in the MySQL 5.5 Reference Manual.