This is a new Beta development release, incorporating new
features in the
NDB storage engine
and fixing recently discovered bugs in MySQL Cluster NDB 6.4.2.
The successor version to MySQL Cluster NDB 6.4.3 is MySQL Cluster NDB 7.0.4. See the section called “Changes in MySQL Cluster NDB 7.0.4 (5.1.32-ndb-7.0.4) (2009-03-18)”.
Obtaining MySQL Cluster NDB 6.4.3. MySQL Cluster NDB 6.4.3 is a source-only release. You can obtain the source code from ftp://ftp.mysql.com/pub/mysql/download/cluster_telco/mysql-5.1.32-ndb-6.4.3/.
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 5.1.32 (see Changes in MySQL 5.1.32 (2009-02-14)).
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 http://bugs.mysql.com/ for more details about the individual bugs fixed in this version.
Functionality Added or Changed
Important Change; Replication:
RESET MASTER and
RESET SLAVE now reset the values
Last_SQL_Errno in the output of
SHOW SLAVE STATUS.
References: See also Bug #44270.
A new data node configuration parameter
been introduced to facilitate parallel node recovery by causing
a local checkpoint to be delayed while recovering nodes are
synchronizing data dictionaries and other meta-information. For
more information about this parameter, see
Defining MySQL Cluster Data Nodes.
New options are introduced for ndb_restore for determining which tables or databases should be restored:
--include-databases can be used to restore
specific tables or databases.
--exclude-databases can be used to exclude
the specified tables or databases from being restored.
For more information about these options, see ndb_restore — Restore a MySQL Cluster Backup. (Bug #40429)
It is now possible to specify default locations for Disk Data
data files and undo log files, either together or separately,
using the data node configuration parameters
For information about these configuration parameters, see
Data file system parameters.
It is also now possible to specify a log file group, tablespace,
or both, that is created when the cluster is started, using the
node configuration parameters. For information about these
configuration parameters, see
Data object creation parameters.
Updates of the
SYSTAB_0 system table to
obtain a unique identifier did not use transaction hints for
tables having no primary key. In such cases the NDB kernel used
a cache size of 1. This meant that each insert into a table not
having a primary key required an update of the corresponding
SYSTAB_0 entry, creating a potential
With this fix, inserts on
NDB tables without
primary keys can be under some conditions be performed up to
100% faster than previously.
References: This bug was introduced by Bug #29263.
Packages for MySQL Cluster were missing the
ALTER TABLE ... REORGANIZE
PARTITION on an
NDBCLUSTER table having only one
partition caused mysqld to crash.
References: See also Bug #40389.
Backup IDs greater than 231 were not handled correctly, causing negative values to be used in backup directory names and printouts. (Bug #43042)
When using ndbmtd, NDB kernel threads could
hang while trying to start the data nodes with
set to 1.
When using multiple management servers and starting several API nodes (possibly including one or more SQL nodes) whose connection strings listed the management servers in different order, it was possible for 2 API nodes to be assigned the same node ID. When this happened it was possible for an API node not to get fully connected, consequently producing a number of errors whose cause was not easily recognizable. (Bug #42973)
When using multi-threaded data nodes,
were effectively multiplied by the number of local query
handlers in use by each ndbmtd instance.
References: See also Bug #42215.
ndb_error_reporter worked correctly only with GNU tar. (With other versions of tar, it produced empty archives.) (Bug #42753)
caused such tables to become locked.
References: See also Bug #16229, Bug #18135.
When performing more than 32 index or tuple scans on a single fragment, the scans could be left hanging. This caused unnecessary timeouts, and in addition could possibly lead to a hang of an LCP. (Bug #42559)
References: This bug is a regression of Bug #42084.
A data node failure that occurred between calls to
was not correctly handled; a subsequent call to
caused a null pointer to be deferenced, leading to a segfault in
If the cluster configuration cache file was larger than 32K, the management server would not start. (Bug #42543)
SHOW GLOBAL STATUS LIKE 'NDB%' before
mysqld had connected to the cluster caused a
When using ndbmtd for all data nodes, repeated failures of one data node during DML operations caused other data nodes to fail. (Bug #42450)
Data node failures that occurred before all data nodes had connected to the cluster were not handled correctly, leading to additional data node failures. (Bug #42422)
When using multi-threaded data nodes, their
IndexMemory usage as
reported was multiplied by the number of local query handlers
(worker threads), making it appear that much more memory was
being used than was actually the case.
References: See also Bug #42765.
Given a MySQL Cluster containing no data (that is, whose data
nodes had all been started using
into which no data had yet been imported) and having an empty
backup directory, executing
START BACKUP with
a user-specified backup ID caused the data nodes to crash.
In some cases,
NDB did not check
correctly whether tables had changed before trying to use the
query cache. This could result in a crash of the debug MySQL
It was not possible to add an in-memory column online to a table
that used a table-level or column-level
DISK option. The same issue prevented
ONLINE TABLE ... REORGANIZE PARTITION from working on
Disk Data tables.
Repeated insert and delete operations on disk-based tables could
lead to failures in the NDB Tablespace Manager
TSMAN kernel block).
Disk Data: Creating a Disk Data tablespace with a very large extent size caused the data nodes to fail. The issue was observed when using extent sizes of 100 MB and larger. (Bug #39096)
Trying to execute a
GROUP statement using a value greater than
caused data nodes to crash.
As a result of this fix, the upper limit for
UNDO_BUFFER_SIZE is now
600M; attempting to set a higher value now
fails gracefully with an error.
References: See also Bug #36702.
Disk Data: When attempting to create a tablespace that already existed, the error message returned was Table or index with given name already exists. (Bug #32662)
Using a path or file name longer than 128 characters for Disk
Data undo log files and tablespace data files caused a number of
issues, including failures of
TABLESPACE statements, as well as crashes of
management nodes and data nodes.
With this fix, the maximum length for path and file names used for Disk Data undo log files and tablespace data files is now the same as the maximum for the operating system. (Bug #31769, Bug #31770, Bug #31772)
Disk Data: Attempting to perform a system restart of the cluster where there existed a logfile group without and undo log files caused the data nodes to crash.
While issuing a
GROUP statement without an
UNDOFILE option fails with an error in the MySQL
server, this situation could arise if an SQL node failed
during the execution of a valid
LOGFILE GROUP statement; it is also possible to
create a logfile group without any undo log files using the
Cluster Replication: Being disconnected from the cluster while setting up the binary log caused mysqld to hang or crash. (Bug #43045)
When replicating between MySQL Clusters,
AUTO_INCREMENT was not set properly on the
Some error messages from ndb_mgmd contained
\n) characters. This could break the
MGM API protocol, which uses the newline as a line separator.
Cluster API: When using an ordered index scan without putting all key columns in the read mask, this invalid use of the NDB API went undetected, which resulted in the use of uninitialized memory. (Bug #42591)