InterSystems has corrected a defect that can result in data integrity problems in environments that use InterSystems mirroring in conjunction with parallel dejournaling. This problem exists for currently released Caché and Ensemble versions beginning with 2017.2 and for InterSystems IRIS Data Platform version 2018.1.
Ensuring that you are protected from this issue
Your system is at risk only if you have a mirroring environment that supports parallel dejournaling for mirrored database catchup.
