This is a replacement release for MySQL Cluster NDB 7.0.12a, fixing a critical issue in that version that was discovered shortly after its release (Bug #51256). MySQL Cluster NDB 7.0.12b is identical in all other respects to MySQL Cluster NDB 7.0.12 and MySQL Cluster NDB 7.0.12a. Users of MySQL Cluster NDB 7.0.12 or MySQL Cluster NDB 7.0.12a (only) should upgrade to the 7.0.12b release as soon as possible.
This is a testing release only, for the purpose of testing the fix for Bug #49190 (now also incorporating the fix for Bug #51027 and Bug #51256). This release is otherwise identical to MySQL Cluster NDB 7.0.11b; users of MySQL Cluster NDB 7.0.11 or MySQL Cluster NDB 7.0.11a who are not interested in testing this change should upgrade to MySQL Cluster NDB 7.0.11b (if they have not done so already), then wait until MySQL Cluster NDB 7.0.13 becomes available.
Obtaining MySQL Cluster NDB 7.0.12a. This is a source-only release. You can obtain the GPL source code for MySQL Cluster NDB 7.0.12a from ftp://ftp.mysql.com/pub/mysql/download/cluster_telco/mysql-5.1.41-ndb-7.0.12a/. You can also access the MySQL Cluster NDB 7.0 development source tree at https://code.launchpad.net/~mysql/mysql-server/mysql-cluster-7.0.
This release incorporates all bugfixes and changes made in previous MySQL Cluster NDB 7.0 releases, as well as all bugfixes and feature changes which were added in mainline MySQL 5.1 through MySQL 5.1.41 (see Changes in MySQL 5.1.41 (2009-11-05)).
Please refer to our bug database at http://bugs.mysql.com/ for more details about the individual bugs fixed in this version.
An initial restart of a data node configured with a large amount of memory could fail with a Pointer too large error. (Bug #51027)
References: This bug was introduced by Bug #47818.