MySQL NDB Cluster 8.0.21 is a new release of NDB 8.0, based on
MySQL Server 8.0 and including features in version 8.0 of the
NDB storage engine, as well as fixing
recently discovered bugs in previous NDB Cluster releases.
Obtaining NDB Cluster 8.0. NDB Cluster 8.0 source code and binaries can be obtained from https://dev.mysql.com/downloads/cluster/.
For an overview of changes made in NDB Cluster 8.0, see What is New in NDB 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 8.0 through MySQL 8.0.21 (see Changes in MySQL 8.0.21 (2020-07-13, General Availability)).
Version 8.0.21-ndb-8.0.21 has no release notes, or they have not been published because the product version has not been released.