jerqi commented on PR #307:
URL: 
https://github.com/apache/incubator-uniffle/pull/307#issuecomment-1308301154

   > We can read the executor configuration of spark through configuration, but 
the actual app running process may not be able to allocate so many resources.
   
   If we use dynamic allocation, we can't know the number of executors. So I 
think we can give a configuration first, user can set that value. Similarly 
ByteDance Shuffle Service give the concurrency tasks through an experience 
formula, you can see 
https://github.com/bytedance/CloudShuffleService/blob/ef0ffb3f43f9f6e96af49629aed2a6ce61a6a2ab/spark-shuffle-manager-2/src/main/scala/org/apache/spark/shuffle/css/CssShuffleManager.scala#L64


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