Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/149#discussion_r10635398
--- Diff: core/src/main/scala/org/apache/spark/Dependency.scala ---
@@ -43,12 +44,13 @@ abstract class NarrowDependency[T](rdd: RDD[T]) extends
Dependency(rdd) {
* Represents a dependency on the output of a shuffle stage.
* @param rdd the parent RDD
* @param partitioner partitioner used to partition the shuffle output
- * @param serializerClass class name of the serializer to use
+ * @param serializer [[Serializer]] to use. If set to null, the default
serializer, as specified
+ * by `spark.serializer` config option, will be used.
*/
class ShuffleDependency[K, V](
@transient rdd: RDD[_ <: Product2[K, V]],
val partitioner: Partitioner,
- val serializerClass: String = null)
+ val serializer: Serializer = null)
--- End diff --
do you know roughly how large the serialized serializer ends up being?
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