Github user lirui-intel commented on a diff in the pull request:
https://github.com/apache/spark/pull/892#discussion_r13421524
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala ---
@@ -738,4 +739,13 @@ private[spark] class TaskSetManager(
logDebug("Valid locality levels for " + taskSet + ": " +
levels.mkString(", "))
levels.toArray
}
+
+ // Re-compute the pending lists. This should be called when new executor
is added
+ def reAddPendingTasks() {
+ logInfo("Re-computing pending task lists.")
+ for (i <- (0 until numTasks).reverse.filter(index =>
copiesRunning(index) == 0
--- End diff --
Actually this is the same filter used in "findTaskFromList". TaskSetManager
will re-add failed task to pending lists, so it can have the updated executor
availability. For speculative task, TaskSetManager won't check the availability
of executors in "findSpeculativeTask". Please correct me if I misunderstand
anything.
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