weixiuli commented on code in PR #36162:
URL: https://github.com/apache/spark/pull/36162#discussion_r906823765
##########
core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala:
##########
@@ -1218,6 +1262,53 @@ private[spark] class TaskSetManager(
def executorAdded(): Unit = {
recomputeLocality()
}
+
+ /**
+ * A class for checking inefficient tasks to be speculated, a task is
inefficient when its data
+ * process rate is less than the average data process rate of all successful
tasks in the stage
+ * multiplied by a multiplier.
+ */
+ private[TaskSetManager] class TaskProcessRateCalculator {
+ private var totalRecordsRead = 0L
+ private var totalExecutorRunTime = 0L
+ private var avgTaskProcessRate = 0.0D
Review Comment:
done.
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