MySQL Cluster 7.3.20 has been released

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 7.3.20, has been released and can be downloaded from

http://www.mysql.com/downloads/cluster/

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

http://dev.mysql.com/doc/relnotes/mysql-cluster/7.3/en/index.html

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

http://www.mysql.com/products/cluster/

Enjoy !

============================================================================== 

Changes in MySQL NDB Cluster 7.3.20 (5.6.39-ndb-7.3.20) (2018-01-17,
General Availability)

    MySQL NDB Cluster 7.3.20 is a new release of NDB Cluster,
    based on MySQL Server 5.6 and including features from version
    7.3 of the NDB storage engine, as well as fixing a number of
    recently discovered bugs in previous NDB Cluster releases.

    Obtaining MySQL NDB Cluster 7.3.  MySQL NDB Cluster 7.3
    source code and binaries can be obtained from
http://dev.mysql.com/downloads/cluster/.

    For an overview of changes made in MySQL NDB Cluster 7.3, see
    What is New in NDB Cluster 7.3
(http://dev.mysql.com/doc/refman/5.6/en/mysql-cluster-what-is-new-7-3.html). 


    This release also incorporates all bug fixes and changes made
    in previous NDB Cluster releases, as well as all bug fixes
    and feature changes which were added in mainline MySQL 5.6
    through MySQL 5.6.39 (see Changes in MySQL 5.6.39 (Not yet
    released, General Availability)
(http://dev.mysql.com/doc/relnotes/mysql/5.6/en/news-5-6-39.html)).

    Bugs Fixed

      * NDB Replication: On an SQL node not being used for a
        replication channel with sql_log_bin=0 it was possible
        after creating and populating an NDB table for a table
        map event to be written to the binary log for the created
        table with no corresponding row events. This led to
        problems when this log was later used by a slave cluster
        replicating from the mysqld where this table was created.
        Fixed this by adding support for maintaining a cumulative
        any_value bitmap for global checkpoint event operations
        that represents bits set consistently for all rows of a
        specific table in a given epoch, and by adding a check to
        determine whether all operations (rows) for a specific
        table are all marked as NOLOGGING, to prevent the
        addition of this table to the Table_map held by the
        binlog injector.
        As part of this fix, the NDB API adds a new
        getNextEventOpInEpoch3() method which provides
        information about any AnyValue received by making it
        possible to retrieve the cumulative any_value bitmap.
        (Bug #26333981)

      * A query against the INFORMATION_SCHEMA.FILES table
        returned no results when it included an ORDER BY clause.
        (Bug #26877788)

      * The NDBFS block's OM_SYNC flag is intended to make sure
        that all FSWRITEREQ signals used for a given file are
        synchronized, but was ignored by platforms that do not
        support O_SYNC, meaning that this feature did not behave
        properly on those platforms. Now the synchronization flag
        is used on those platforms that do not support O_SYNC.
        (Bug #76975, Bug #21049554)

On Behalf of Oracle/MySQL Release Engineering Team
Prashant Tekriwal