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 http://dev.mysql.com/downloads/cluster/. 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 https://code.launchpad.net/~mysql/mysql-server/mysql-5.1-telco-6.3.
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 5.1.66 (see Changes in MySQL 5.1.66 (2012-09-28)).
Please refer to our bug database at http://bugs.mysql.com/ for more details about the individual bugs fixed in this version.
A slow filesystem during local checkpointing could exert undue
DBDIH kernel block file page
buffers, which in turn could lead to a data node crash when
these were exhausted. This fix limits the number of table
definition updates that
DBDIH can issue
When the buffer pool used for
NDB API requests for primary key and scans was exhausted while
KeyInfo, the error handling
path did not correctly abort the scan request. Symptoms of this
incorrect error handling included the NDB API client that
requested the scan experiencing a long timeout, as well as
permanent leakage of the scan record, scan fragment records, and
linked operation record associated with the scan.
This issue is not present in MySQL Cluster NDB 7.0 and later,
due to the replacement of the fixed-size single-purpose buffers
as well as improvements in error handling.