Github user xuanyuanking commented on the issue: https://github.com/apache/spark/pull/21293 @jose-torres Great thanks for you advise and guidance for us! I found the main difference between us is whether we can reuse current implementation of scheduler and shuffle. I marked in your design here:https://docs.google.com/document/d/1IL4kJoKrZWeyIhklKUJqsW-yEN7V7aL05MmM65AYOfE/edit?disco=AAAAB4z058g
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