Github user sryza commented on a diff in the pull request:
https://github.com/apache/spark/pull/6394#discussion_r35148929
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnAllocator.scala ---
@@ -127,6 +127,16 @@ private[yarn] class YarnAllocator(
}
}
+ // A map to store preferred hostname and possible task numbers running
on it.
+ private var hostToLocalTaskCounts: Map[String, Int] = Map.empty
+
+ // Locality required pending task number
--- End diff --
"Number of tasks that have locality preferences in active stages"
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