MySQL NDB Cluster 7.4.6 is a new release of MySQL NDB Cluster 7.4,
based on MySQL Server 5.6 and including features in version 7.4 of
NDB storage engine, as well as
fixing recently discovered bugs in previous NDB Cluster releases.
Obtaining MySQL NDB Cluster 7.4. MySQL NDB Cluster 7.4 source code and binaries can be obtained from https://dev.mysql.com/downloads/cluster/.
For an overview of changes made in MySQL NDB Cluster 7.4, see What is New in NDB Cluster 7.4.
This release also incorporates all bug fixes and changes made in previous NDB Cluster releases, as well as all bug fixes and feature changes which were added in mainline MySQL 5.6 through MySQL 5.6.24 (see Changes in MySQL 5.6.24 (2015-04-06, General Availability)).
During backup, loading data from one SQL node followed by repeated
DELETEstatements on the tables just loaded from a different SQL node could lead to data node failures. (Bug #18949230)
When an instance of
NdbEventBufferwas destroyed, any references to GCI operations that remained in the event buffer data list were not freed. Now these are freed, and items from the event bufer data list are returned to the free list when purging GCI containers. (Bug #76165, Bug #20651661)
When a bulk delete operation was committed early to avoid an additional round trip, while also returning the number of affected rows, but failed with a timeout error, an SQL node performed no verification that the transaction was in the Committed state. (Bug #74494, Bug #20092754)
References: See also: Bug #19873609.