Changes in MySQL NDB Cluster 8.0.44 (2025-10-23, General Availability)

MySQL NDB Cluster 8.0.44 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 MySQL NDB Cluster 8.0.

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 8.0.44 (see Changes in MySQL 8.0.44 (2025-10-21, General Availability)).

• Functionality Added or Changed

• Bugs Fixed

Functionality Added or Changed

• MySQL NDB Cluster now generates log entries for redo logging issues, including redo log buffer exhaustion, redo log space exhaustion, and file change problems, which can cause transactions to be aborted, queued, or delayed. A secondary overload control mechanism monitors the rate at which the redo log part's Redo buffer is flushed to disk and estimates the time required to complete writing all data in the part's Redo buffer. (Bug #37903091)

Bugs Fixed

• If a data node restarted during a backup, the remaining data nodes could hang and the backup process stopped. The backup was marked as failed, and other nodes did not terminate their backup process, preventing further backups from being initiated. (Bug #38316252)

• It was not possible to restore backups with BackupID values greater than 2147483647, with the ndb_restore tool. Errors were returned similar to the following:

          ndb_restore: [Warning] option 'backupid': signed value
          3000000000 adjusted to 2147483647. Failed to find backup
          2147483647.

  (Bug #38260769)