Github user cmccabe commented on a diff in the pull request:
https://github.com/apache/spark/pull/1486#discussion_r17881709
--- Diff: core/src/main/scala/org/apache/spark/scheduler/TaskLocation.scala
---
@@ -22,13 +22,35 @@ package org.apache.spark.scheduler
* In the latter case, we will prefer to launch the task on that
executorID, but our next level
* of preference will be executors on the same host if this is not
possible.
*/
-private[spark]
-class TaskLocation private (val host: String, val executorId:
Option[String]) extends Serializable {
- override def toString: String = "TaskLocation(" + host + ", " +
executorId + ")"
+private[spark] sealed abstract class TaskLocation(val host: String) {
+}
+
+private [spark] case class ExecutorCacheTaskLocation(override val host:
String,
+ val executorId: String) extends TaskLocation(host) {
+}
+
+private [spark] case class HDFSCachedTaskLocation(override val host:
String)
--- End diff --
ok
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