Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/19788#discussion_r169229539 --- Diff: core/src/main/scala/org/apache/spark/storage/BlockId.scala --- @@ -51,11 +51,25 @@ case class RDDBlockId(rddId: Int, splitIndex: Int) extends BlockId { // Format of the shuffle block ids (including data and index) should be kept in sync with // org.apache.spark.network.shuffle.ExternalShuffleBlockResolver#getBlockData(). +trait ShuffleBlockIdBase { --- End diff -- we can make this extend `BlockId`.
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