squito commented on issue #26284: [SPARK-29415][Core]Stage Level Sched: Add 
base ResourceProfile and Request classes
URL: https://github.com/apache/spark/pull/26284#issuecomment-549416880
 
 
   Its hard to know how to break down a large change like this.  It definitely 
is helpful to have it in little chunks, and this is a logical unit -- I just 
have a hard time knowing how the bits fit together, which is why its helpful to 
at least be able to explore some code with more parts, even if I'm not 
reviewing it carefully.  To me, the key part is understanding how the scheduler 
is going to put everything together (eg. I left a question on the doc on how 
Task & Executor requests get combined and whether both are necessary).
   
   Its also OK to just amend this part in the future if we realize later we 
could improve this, as this is all being kept private for now.

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