Hi everyone, I am interested in how people safely upgrade their Flink applications when they apply a patch, or when they develop a new feature. How do you ensure that no bug was introduced?
Do you run two versions of the application simultaneously (the old and the upgraded one), monitoring their results to make sure that they are consistent? Do you run a set of unit and integration tests and then deploy if they all succeed? Do you have some other method? Best regards, Konstantinos Kallas
