Github user XuTingjun commented on a diff in the pull request: https://github.com/apache/spark/pull/6817#discussion_r32399782 --- Diff: core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala --- @@ -553,12 +562,13 @@ private[spark] class ExecutorAllocationManager( } // If this is the last pending task, mark the scheduler queue as empty - stageIdToTaskIndices.getOrElseUpdate(stageId, new mutable.HashSet[Int]) += taskIndex + stageIdToTaskIndices.getOrElseUpdate(stageId, new mutable.HashSet[String]) += (taskIndex + "." + attemptId) --- End diff -- if use taskIndex , when the new task (attempt id is not 0) is starting, the stageIdToTaskIndices will not update, because the taskIndex is the same with the before failed task.
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