Github user kayousterhout commented on the pull request: https://github.com/apache/spark/pull/8887#issuecomment-147796048 I'm wondering if it's possible to do this in a simpler way and without changing the Pool interface by: (1) creating a new "ReasonPending" ExecutorLostReason (2) In TaskSchedulerImpl, move the "rootPool.executorLost" call out of removeExecutor and into executorLost, to a place where it gets called even if the executorId is no longer in activeExecutorIds (even if the executor is no longer considered active) (this means that the implementation of Pool.executorLost needs to be idempotent because it may be called multiple times, but the implementation in TaskSetManager seems to be) (3) if an executor lost reason is ReasonPending, don't call rootPool.executorLost(executorId, host) call yet (so the tasks don't get cancelled) (4) YARN can then call executorLost a second time once it knows the correct reason It seems like that might be a less invasive change that reuses most of the existing code for dealing with losses, and also avoids making the scheduling interfaces more complex? Thoughts?
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