I guess that most things have already been said on the related discussion thread [1]. Hence, I'm going to start the vote.
[1] https://lists.apache.org/thread.html/107b15de6b8ac849610d99c4754715d2a8a2f32ddfe9f8da02af2ccc@%3Cdev.flink.apache.org%3E Cheers, Till On Tue, Sep 3, 2019 at 11:41 AM Till Rohrmann <trohrm...@apache.org> wrote: > Hi everyone, > > I'd like to discuss changing the default restart delay for FixedDelay- and > FailureRateRestartStrategy to "1 s" [1]. > > According to a user survey about the default value of the restart delay > [2], it turned out that the current default value of "0 s" is not optimal. > In practice Flink users tend to set it to a non-zero value (e.g. "10 s") in > order to prevent restart storms originating from overloaded external > systems. > > I would like to set the default restart delay of the > FixedDelayRestartStrategy ("restart-strategy.fixed-delay.delay") and of the > FailureRateRestartStrategy ("restart-strategy.failure-rate.delay") to "1 > s". "1 s" should prevent restart storms originating from causes outside of > Flink (e.g. overloaded external systems) and still be fast enough to not > having a noticeable effect on most Flink deployments. > > However, this change will affect all users who currently rely on the > current default restart delay value ("0 s"). The plan is to add a release > note to make these users aware of this change when upgrading Flink. > > [1] > https://cwiki.apache.org/confluence/display/FLINK/FLIP-62%3A+Set+default+restart+delay+for+FixedDelay-+and+FailureRateRestartStrategy+to+1s > [2] > https://lists.apache.org/thread.html/107b15de6b8ac849610d99c4754715d2a8a2f32ddfe9f8da02af2ccc@%3Cdev.flink.apache.org%3E > > Cheers, > Till >
