Github user uncleGen commented on a diff in the pull request: https://github.com/apache/spark/pull/16052#discussion_r89983105 --- Diff: core/src/main/scala/org/apache/spark/serializer/SerializerManager.scala --- @@ -155,7 +155,12 @@ private[spark] class SerializerManager(defaultSerializer: Serializer, conf: Spar outputStream: OutputStream, values: Iterator[T]): Unit = { val byteStream = new BufferedOutputStream(outputStream) - val ser = getSerializer(implicitly[ClassTag[T]]).newInstance() + val ser = blockId match { --- End diff -- Ah, yours is better.
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