IgorBerman commented on issue #20640: [SPARK-19755][Mesos] Blacklist is always active for MesosCoarseGrainedSchedulerBackend URL: https://github.com/apache/spark/pull/20640#issuecomment-526306549 @akirillov I'd say it makes sense(e.g. for cases of temp "bad" state of some node e.g. port collision for some reason, bad disk or anything else one can think of), but clearly not as it is implemented now(without any timeout) since it may mark all nodes in cluster as blacklisted eventually(if we are speaking about production cluster with long running jobs)
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