Github user lirui-intel commented on a diff in the pull request:
https://github.com/apache/spark/pull/892#discussion_r13594625
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala ---
@@ -388,7 +386,7 @@ private[spark] class TaskSetManager(
val curTime = clock.getTime()
var allowedLocality = getAllowedLocalityLevel(curTime)
- if (allowedLocality > maxLocality) {
+ if (allowedLocality > maxLocality &&
myLocalityLevels.contains(maxLocality)) {
--- End diff --
I'm not sure about this though. It's meant to avoid skipping valid levels
trying something not as desirable (tasks in pendingTasksWithNoPrefs to be
specific). Please let me know if you think this should be addressed in another
JIRA (e.g. with some delay introduced to pendingTasksWithNoPrefs).
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