tillrohrmann commented on issue #9552: [FLINK-13884] Set default failure rate restart strategy delay to 0s URL: https://github.com/apache/flink/pull/9552#issuecomment-527064874 > > The restart storms should no longer happen with queued scheduling because we wait for the slot request timeout before failing again. > > Hi @tillrohrmann , we once experienced restart storms in which case a task failed fast once it is deployed to TM, e.g. failed due to task internal errors or failed when trying to connecting to a bad external node. Queued scheduling might not help in such cases. You are right @zhuzhurk. Restart storms caused by external system overload won't be solved with the slot request timeouts. Then let's see this PR as a unification of the restart delays of the fixed delay and failure rate restart strategies. Whether to increase the default delay or not will be dealt with in a follow up issue. I've started a [survey on the ML](https://lists.apache.org/thread.html/107b15de6b8ac849610d99c4754715d2a8a2f32ddfe9f8da02af2ccc@%3Cdev.flink.apache.org%3E). Depending on the outcome of it, I'll create a new issue to update the delay.
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