viirya commented on a change in pull request #26633: [SPARK-29994][CORE] Add
WILDCARD task location
URL: https://github.com/apache/spark/pull/26633#discussion_r349441768
##########
File path: core/src/main/scala/org/apache/spark/scheduler/TaskLocation.scala
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@@ -49,6 +49,16 @@ private [spark] case class HDFSCacheTaskLocation(override
val host: String) exte
override def toString: String = TaskLocation.inMemoryLocationTag + host
}
+/**
+ * A location that can match any host. This can be used as the last location
in the list of
+ * preferred locations to indicate that the task can be assigned to any host
if it cannot get any
+ * desired location immediately.
+ */
+private [spark] case class WildcardLocation() extends TaskLocation {
Review comment:
case object/object?
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