cloud-fan commented on issue #27207: [WIP][SPARK-18886][CORE] Make Locality wait time measure resource under utilization due to delay scheduling. URL: https://github.com/apache/spark/pull/27207#issuecomment-581908339 > The newly proposed delay is the time since a TasksSet last launched a task and did not reject any resources due to delay scheduling when offered its "fair share". Thanks for updating the PR description! The proposal makes sense to me. Is it possible to centralize the delay scheduling code? Now it's in both `TaskSchedulerImpl` and `TaskSetManager`, which makes it a bit hard to understand as you need to think about the interactions between them.
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