FMX commented on code in PR #2119:
URL: 
https://github.com/apache/incubator-celeborn/pull/2119#discussion_r1411768474


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master/src/main/scala/org/apache/celeborn/service/deploy/master/Master.scala:
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@@ -674,15 +674,11 @@ private[celeborn] class Master(
         else Math.min(slotsAssignMaxWorkers, requestSlots.maxWorkers)),
       numAvailableWorkers)
     val startIndex = Random.nextInt(numAvailableWorkers)

Review Comment:
   Duplicating the available workers' array might be a problem. Worker numbers 
in different environments might vary. We can not assume that the worker number 
won't be large.
   We treated  `availableWorkers` as a Circular Queue. If the old codes are not 
easy to read, maybe add some comments could be enough.



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