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Posted to dev@flink.apache.org by "Till Rohrmann (Jira)" <ji...@apache.org> on 2021/04/13 09:10:00 UTC

[jira] [Created] (FLINK-22254) Only trigger scale up if the resources have stabilized

Till Rohrmann created FLINK-22254:
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             Summary: Only trigger scale up if the resources have stabilized
                 Key: FLINK-22254
                 URL: https://issues.apache.org/jira/browse/FLINK-22254
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Coordination
    Affects Versions: 1.13.0
            Reporter: Till Rohrmann
             Fix For: 1.14.0


In order to improve the scale up behaviour of the {{AdaptiveScheduler}} we should only trigger a scale up operation if the resource set has stabilized. That way it should be possible to immediately restart the job after its cancellation if the resource set has not changed in the meantime.

One way to implement this behaviour is to only notify the {{State}} about new resources after they have stabilized.



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