cloud-fan commented on issue #26541: [SPARK-29910][SQL] Optimize speculation performance by adding minimum runtime limit URL: https://github.com/apache/spark/pull/26541#issuecomment-555887876 In general it's OK to make a hardcoded value configurable, but I doubt if it's really useful in this case. If you have different kinds of tasks that need different speculation min time, then a global config doesn't help. You need a per job(or even per stage) config.
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