Failure to start nodes after scaling via the ConfD job "infra_db_scale" leaves an inconsistent state

Detail name	Value
Changelog Number	24037
Type	Bug
Status	Resolved
Affected Versions	Exasol 8.0.0, Exasol 2025.1.0
Fix Versions	Exasol 2025.1.9, Exasol 2026.1.0, Exasol 2025.2.1
Resolution Date	2026-02-18

Description

If the ConfD job infra_db_scale is not able to finish successfully, a rollback to the previous state is performed. However, this rollback procedure is incomplete if the failure is produced by a timeout in the initialization step after updating the compute instances, since the nodes are not brought back to their original instance types.

Workaround

None

Fix

Additional steps are performed in the rollback procedure, in order to bring the nodes back to their previous compute instance types.