Github user colorant commented on the pull request: https://github.com/apache/spark/pull/1241#issuecomment-47493840 @rxin Moved getBlockLocation method from shuffleBlockManager to HashShuffleBlockMananger to make the interface more general. Does current interface looks reasonable for you? Also still a few shuffle related code could be moved further from block manager to some specific shuffle manager related classes' implementation ( e.g. blockManager.getMultiple). But since they are not tightly related to this shuffleBlockManager generalization works and I am not quite sure whether the other shufflemanager implementation will reuse them or not, so just leave it as it is, and could be done in future PR I guess.
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