yabola commented on PR #38560:
URL: https://github.com/apache/spark/pull/38560#issuecomment-1307984001

   The two things that I know need to be addressed are:
   1. Some merge data blocks are not saved on the driver because they are too 
small ( controlled by `spark.shuffle.push.minShuffleSizeToWait`)
   please see 
https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala#L2295
   
   2. The meaning of the `externalShuffleServiceRemoveShuffleEnabled` parameter 
is not consistent with my current function, but the name is very similar.


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