MySQL NDB Cluster 7.2 Release Notes
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)