squito commented on issue #24892: [SPARK-25341][Core] Support rolling back a shuffle map stage and re-generate the shuffle files URL: https://github.com/apache/spark/pull/24892#issuecomment-518740629 > The task attempt id is not enough in this situation, because for the indeterminate stage, while a single task fails, we need a whole stage rerun, only retry the failure task will cause correctness bug yes, but the scheduler is responsible for rerunning all those tasks, and then tracking shuffle files, right? (admittedly I'm still trying to understand the rest of this pr ...)
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