[SURVEY] How do people upgrade their Flink applications?

Posted by Konstantinos Kallas on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/SURVEY-How-do-people-upgrade-their-Flink-applications-tp30355.html

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