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MySQL NDB Cluster 6.1 - 7.1 Release Notes
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MySQL NDB Cluster 6.1 - 7.1 Release Notes  /  Changes in MySQL Cluster NDB 6.3  /  Changes in MySQL Cluster NDB 6.3.46 (5.1.56-ndb-6.3.46) (Not released)

Changes in MySQL Cluster NDB 6.3.46 (5.1.56-ndb-6.3.46) (Not released)

This is a bugfix release, fixing recently discovered bugs in the previous MySQL Cluster NDB 6.3 release.

Obtaining MySQL Cluster NDB 6.3.  The latest MySQL Cluster NDB 6.3 binaries for supported platforms can be obtained from Source code for the latest MySQL Cluster NDB 6.3 release can be obtained from the same location. You can also access the MySQL Cluster NDB 6.3 development source tree at

This release 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 5.1 through MySQL 5.1.56 (see Changes in MySQL 5.1.56 (2011-03-01)).


Please refer to our bug database at for more details about the individual bugs fixed in this version.

Bugs Fixed

  • When replicating DML statements with IGNORE between clusters, the number of operations that failed due to nonexistent keys was expected to be no greater than the number of defined operations of any single type. Because the slave SQL thread defines operations of multiple types in batches together, code which relied on this assumption could cause mysqld to fail. (Bug #12859831)

  • When failure handling of an API node takes longer than 300 seconds, extra debug information is included in the resulting output. In cases where the API node's node ID was greater than 48, these extra debug messages could lead to a crash, and confuing output otherwise. This was due to an attempt to provide information specific to data nodes for API nodes as well. (Bug #62208)

  • In rare cases, a series of node restarts and crashes during restarts could lead to errors while reading the redo log. (Bug #62206)