MySQL NDB Cluster 7.2 Release Notes
MySQL NDB Cluster 7.2.25 is a new release of NDB Cluster,
incorporating new features in the NDB
storage engine, and fixing recently discovered bugs in previous
MySQL NDB Cluster 7.2 development releases.
Obtaining MySQL NDB Cluster 7.2. MySQL NDB Cluster 7.2 source code and binaries can be obtained from https://dev.mysql.com/downloads/cluster/.
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 5.5 through MySQL 5.5.50 (see Changes in MySQL 5.5.50 (2016-06-02, General Availability)).
Incompatible Change:
When the data nodes are only partially connected to the API
nodes, a node used for a pushdown join may get its request from
a transaction coordinator on a different node, without (yet)
being connected to the API node itself. In such cases, the
NodeInfo object for the requesting API node
contained no valid info about the software version of the API
node, which caused the DBSPJ block to assume
(incorrectly) when aborting to assume that the API node used
NDB version 7.2.4 or earlier, requiring the
use of a backward compatability mode to be used during query
abort which sent a node failure error instead of the real error
causing the abort.
Now, whenever this situation occurs, it is assumed that, if the
NDB software version is not yet available,
the API node version is greater than 7.2.4.
(Bug #23049170)