Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/3779#discussion_r23338809
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala ---
@@ -495,13 +495,39 @@ private[spark] class TaskSetManager(
* Get the level we can launch tasks according to delay scheduling,
based on current wait time.
*/
private def getAllowedLocalityLevel(curTime: Long):
TaskLocality.TaskLocality = {
- while (curTime - lastLaunchTime >= localityWaits(currentLocalityIndex)
&&
- currentLocalityIndex < myLocalityLevels.length - 1)
- {
- // Jump to the next locality level, and remove our waiting time for
the current one since
- // we don't want to count it again on the next one
- lastLaunchTime += localityWaits(currentLocalityIndex)
- currentLocalityIndex += 1
+ // remove the emptyList from pendingTasks lazily
+ def hasNonEmptyList(pendingTasks: HashMap[String, ArrayBuffer[Int]]):
Boolean = {
--- End diff --
For the first call, it will be N, then all the execId will be removed from
pendingTasksForExecutor, the next call will be 0.
All the empty list will be access once, all the non-empty list, only one of
them is accessed.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
