Replaying processing of a restarted application

A computer-implemented method according to one embodiment includes establishing a predetermined checkpoint and storing a log of duplicate read data in association with the predetermined checkpoint during a running of an application that is processing at least one data set, the duplicate read data including an image of all data retrieved from the at least one data set in response to a plurality of data reads made by the application before the predetermined checkpoint; identifying a first failure of the application; and restarting the application and performing a first replay of the application in response to the first failure.