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MySQL NDB Cluster 6.1 - 7.1 Release Notes  /  Changes in MySQL Cluster NDB 7.0  /  Changes in MySQL Cluster NDB 6.4.2 (5.1.31-ndb-6.4.2) (2009-01-28)

Changes in MySQL Cluster NDB 6.4.2 (5.1.31-ndb-6.4.2) (2009-01-28)

This is a new Beta development release, incorporating new features in the NDB storage engine and fixing recently discovered bugs in MySQL Cluster NDB 6.4.1.

Obtaining MySQL Cluster NDB 6.4.2.  MySQL Cluster NDB 6.4.2 is a source-only release. You can obtain the source code from

This Beta release incorporates all bugfixes and changes made in previous MySQL Cluster NDB 6.1, 6.2, 6.3, and 6.4 releases, as well as all bugfixes and feature changes which were added in mainline MySQL 5.1 through MySQL 5.1.31 (see Changes in MySQL 5.1.31 (2009-01-19)).


This Beta release, as any other pre-production release, should not be installed on production level systems or systems with critical data. Please refer to our bug database at for more details about the individual bugs fixed in this version.

Bugs Fixed

  • Connections using IPv6 were not handled correctly by mysqld. (Bug #42413)

    References: See also: Bug #42412, Bug #38247.

  • When a cluster backup failed with Error 1304 (Node node_id1: Backup request from node_id2 failed to start), no clear reason for the failure was provided.

    As part of this fix, MySQL Cluster now retries backups in the event of sequence errors. (Bug #42354)

    References: See also: Bug #22698.

  • Issuing SHOW ENGINE NDBCLUSTER STATUS on an SQL node before the management server had connected to the cluster caused mysqld to crash. (Bug #42264)

  • When using ndbmtd, setting MaxNoOfExecutionThreads to a value higher than the actual number of cores available and with insufficient SharedGlobalMemory caused the data nodes to crash.

    The fix for this issue changes the behavior of ndbmtd such that its internal job buffers no longer rely on SharedGlobalMemory. (Bug #42254)