[GitHub] Ngone51 commented on a change in pull request #23842: [SPARK-26927]Fix race condition may cause dynamic allocation not working

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

Ngone51 commented on a change in pull request #23842: [SPARK-26927]Fix race condition may cause dynamic allocation not working
URL: https://github.com/apache/spark/pull/23842#discussion_r260357545
 
 

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 File path: core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala
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 @@ -566,6 +574,13 @@ private[spark] class ExecutorAllocationManager(
     if (executorIds.contains(executorId)) {
       executorIds.remove(executorId)
       removeTimes.remove(executorId)
+      if (!removedExecutorIds.offer(executorId)) {
+        logWarning(s"The queue is full for tracking removed executors, will trim old " +
+          s"executor ids and offer again")
+        val trimSize = math.max(1, removedExecutorIds.size() / 10)
 
 Review comment:
   It seems `trimSize` would always be `MAXIMUM_NUM_REMOVED_EXECUTORS` / 10.

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