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MySQL NDB Cluster 6.1 - 7.1 Release Notes  /  Changes in MySQL Cluster NDB 6.2  /  Changes in MySQL Cluster NDB 6.2.9 (5.1.22-ndb-6.2.9) (2007-11-22)

Changes in MySQL Cluster NDB 6.2.9 (5.1.22-ndb-6.2.9) (2007-11-22)

This is a bugfix release, fixing recently discovered bugs in the previous MySQL Cluster NDB 6.2 release.

MySQL Cluster NDB 6.2 no longer in development.  MySQL Cluster NDB 6.2 is no longer being developed or maintained; if you are using a MySQL Cluster NDB 6.2 release, you should upgrade to the latest version of MySQL Cluster, which is available from .

Obtaining MySQL Cluster NDB 6.2.  You can download the latest MySQL Cluster NDB 6.2 source code and binaries for supported platforms from

This Beta 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 5.1.22 (see Changes in MySQL 5.1.22 (2007-09-24, Release Candidate)).


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

Functionality Added or Changed

  • Added the ndb_mgm client command DUMP 8011, which dumps all subscribers to the cluster log. See DUMP 8011, for more information.

Bugs Fixed

  • A local checkpoint could sometimes be started before the previous LCP was restorable from a global checkpoint. (Bug #32519)

  • High numbers of API nodes on a slow or congested network could cause connection negotiation to time out prematurely, leading to the following issues:

    • Excessive retries

    • Excessive CPU usage

    • Partially connected API nodes

    (Bug #32359)

  • The failure of a master node could lead to subsequent failures in local checkpointing. (Bug #32160)

  • Adding a new TINYTEXT column to an NDB table which used COLUMN_FORMAT = DYNAMIC, and when binary logging was enabled, caused all cluster mysqld processes to crash. (Bug #30213)

  • After adding a new column of one of the TEXT or BLOB types to an NDB table which used COLUMN_FORMAT = DYNAMIC, it was no longer possible to access or drop the table using SQL. (Bug #30205)

  • A restart of the cluster failed when more than 1 REDO phase was in use. (Bug #22696)

  • Replication; Cluster Replication: Where a table being replicated had a TEXT or BLOB column, an UPDATE on the master that did not refer explicitly to this column in the WHERE clause stopped the SQL thread on the slave with Error in Write_rows event: row application failed. Got error 4288 'Blob handle for column not available' from NDBCLUSTER. (Bug #30674)

  • Cluster Replication: Under certain conditions, the slave stopped processing relay logs. This resulted in the logs never being cleared and the slave eventually running out of disk space. (Bug #31958)