Github user srowen commented on a diff in the pull request: https://github.com/apache/spark/pull/14232#discussion_r71064096 --- Diff: common/network-shuffle/src/main/java/org/apache/spark/network/shuffle/protocol/BlockTransferMessage.java --- @@ -35,6 +35,9 @@ * shuffle service. It returns a StreamHandle. * - UploadBlock is only handled by the NettyBlockTransferService. * - RegisterExecutor is only handled by the external shuffle service. + * - StreamHandle is only handled by the OneForOneBlockFetcher. + * - RegisterDriver is only handled by the MesosExternalShuffleService. + * - HearBeat is only handled by the MesosExternalShuffleService. --- End diff -- Best to ask the author where possible; use Blame to see who wrote these parts. @aarondav ?
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