Just to share some thoughts. If a Flink application need to upgrade, including user jar or Flink version, the following instructions need to be done. 1. Unit test, integration test, stability test, benchmark test 2. Deploy the upgraded application to test environment with fake inputs/outputs to avoid impact on production applications 3. Deploy the upgraded application to pre-production environment with copy of production inputs/outputs. It should be running for more than one cycle, usually one day or one week. 4. Deploy it the production environment
Best, Yang Konstantinos Kallas <konstantinos.kal...@hotmail.com> 于2019年10月8日周二 上午4:07写道： > 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 > >
