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From:Balasubramanian Kandasamy Date:April 14 2015 1:05pm
Subject:MySQL Cluster 7.4.6 has been released
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Dear MySQL Users,

MySQL Cluster is the distributed, shared-nothing variant of MySQL.
This storage engine provides:

   - In-Memory storage - Real-time performance (with optional
     checkpointing to disk)
   - Transparent Auto-Sharding - Read & write scalability
   - Active-Active/Multi-Master geographic replication
   - 99.999% High Availability with no single point of failure
     and on-line maintenance
   - NoSQL and SQL APIs (including C++, Java, http, Memcached
     and JavaScript/Node.js)

MySQL Cluster 7.4 makes significant advances in performance;
operational efficiency (such as enhanced reporting and faster restarts
and upgrades) and conflict detection and resolution for active-active
replication between MySQL Clusters.

MySQL Cluster 7.4.6 has been released and can be downloaded from

where you will also find Quick Start guides to help you get your
first MySQL Cluster database up and running.

The release notes are available from

MySQL Cluster enables users to meet the database challenges of next
generation web, cloud, and communications services with uncompromising
scalability, uptime and agility.

More details can be found at

Enjoy !

Changes in MySQL Cluster NDB 7.4.6 (5.6.24-ndb-7.4.6) (2015-04-14)

    MySQL Cluster NDB 7.4.6 is a new release of MySQL Cluster 7.4, based
    on MySQL Server 5.6 and including features in version 7.4 of the NDB
    storage engine, as well as fixing recently discovered bugs in
    previous MySQL Cluster releases.

    Obtaining MySQL Cluster NDB 7.4.  MySQL Cluster NDB 7.4 source code
    and binaries can be obtained from

    For an overview of changes made in MySQL Cluster NDB 7.4, see MySQL
    Cluster Development in MySQL Cluster NDB 7.4

    This release also incorporates all bugfixes and changes made in
    previous MySQL Cluster releases, as well as all bugfixes and feature
    changes which were added in mainline MySQL 5.6 through MySQL 5.6.24
    (see Changes in MySQL 5.6.24 (2015-04-06)

    Bugs Fixed

      * During backup, loading data from one SQL node followed by
        repeated DELETE statements on the tables just loaded from a
        different SQL node could lead to data node failures.  (Bug

      * When an instance of NdbEventBuffer was destroyed, any
        references to GCI operations that remained in the event buffer
        data list were not freed. Now these are freed, and items from the
        event bufer data list are returned to the free list when purging
        GCI containers. (Bug #76165, Bug #20651661)

      * When a bulk delete operation was committed early to avoid
        an additional round trip, while also returning the number of
        affected rows, but failed with a timeout error, an SQL node
        performed no verification that the transaction was in the
        Committed state. (Bug #74494, Bug #20092754) References: See also
        Bug #19873609.

On behalf of Oracle/MySQL RE Team
Balasubramanian Kandasamy

MySQL Cluster 7.4.6 has been releasedBalasubramanian Kandasamy14 Apr