[GitHub] [spark] jiangxb1987 commented on a change in pull request #28742: [SPARK-31921][CORE] Fix the wrong warning: "App app-xxx requires more resource than any of Workers could have"

[GitBox <gi...@apache.org>]

jiangxb1987 commented on a change in pull request #28742:
URL: https://github.com/apache/spark/pull/28742#discussion_r436484541



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File path: core/src/main/scala/org/apache/spark/deploy/master/Master.scala
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@@ -715,7 +715,9 @@ private[deploy] class Master(
         val usableWorkers = workers.toArray.filter(_.state == WorkerState.ALIVE)
           .filter(canLaunchExecutor(_, app.desc))
           .sortBy(_.coresFree).reverse
-        if (waitingApps.length == 1 && usableWorkers.isEmpty) {
+        val appMayHang = waitingApps.length == 1 &&

Review comment:
       Why do you need to verify `waitingApps.length == 1` ?




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