Github user sryza commented on a diff in the pull request:
https://github.com/apache/spark/pull/6394#discussion_r35148779
--- Diff:
core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala ---
@@ -637,6 +662,24 @@ private[spark] class ExecutorAllocationManager(
def isExecutorIdle(executorId: String): Boolean = {
!executorIdToTaskIds.contains(executorId)
}
+
+ /**
+ * Get a tuple of (the number of task with locality preferences, a map
where each pair is a
+ * node and the number of tasks that would like to be scheduled on
that node).
+ */
--- End diff --
Mention "These hints are updated when stages arrive and complete, so are
not up-to-date at task granularity within stages."
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