Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/126#discussion_r10540258
--- Diff: core/src/main/scala/org/apache/spark/MapOutputTracker.scala ---
@@ -50,23 +54,26 @@ private[spark] class
MapOutputTrackerMasterActor(tracker: MapOutputTrackerMaster
}
}
-private[spark] class MapOutputTracker(conf: SparkConf) extends Logging {
+/**
+ * Class that keeps track of the location of the location of the mapt
output of
+ * a stage. This is abstract because different versions of MapOutputTracker
+ * (driver and worker) use different HashMap to store its metadata.
--- End diff --
"... keeps track of the location of the location of the mapt output..."
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