Ngone51 commented on code in PR #36162:
URL: https://github.com/apache/spark/pull/36162#discussion_r891334508
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core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala:
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@@ -1217,6 +1260,71 @@ private[spark] class TaskSetManager(
def executorAdded(): Unit = {
recomputeLocality()
}
+
+ /**
+ * A class for checking inefficient tasks to be speculated, the inefficient
tasks come from
+ * the tasks which may be speculated by the previous strategy.
+ */
+ private[scheduler] class InefficientTaskCalculator {
Review Comment:
I'm thinking more about the naming of the calculator as it's also important
for code readability. How about renaming it to `TaskProcessRateCalculator`? And
then, we can also rename the function `maySpeculateTask` to `isEfficient`.
`checkAndSubmitSpeculatableTasks` can decide whether to speculate the task
depending on the return value of `isEfficient`. As a result,
`TaskProcessRateCalculator` only foucs on task progress rate and no specualtive
stuff.
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