Some database objects such as tables and indexes have different
limitations when using the
NDBCLUSTER storage engine:
Number of database objects.
The maximum number of all
NDB database objects in a
single MySQL Cluster—including databases, tables,
and indexes—is limited to 20320.
Attributes per table. The maximum number of attributes (that is, columns and indexes) that can belong to a given table is 512.
Attributes per key. The maximum number of attributes per key is 32.