vanzin commented on a change in pull request #23706: [SPARK-26790][CORE] Change 
approach for retrieving executor logs and attributes: self-retrieve
URL: https://github.com/apache/spark/pull/23706#discussion_r256637868
 
 

 ##########
 File path: 
core/src/main/scala/org/apache/spark/executor/CoarseGrainedExecutorBackend.scala
 ##########
 @@ -285,25 +285,29 @@ private[spark] object CoarseGrainedExecutorBackend 
extends Logging {
       printUsageAndExit()
     }
 
-    run(driverUrl, executorId, hostname, cores, appId, workerUrl, 
userClassPath)
+    val createFn: (RpcEnv, SparkEnv) => CoarseGrainedExecutorBackend = { case 
(rpcEnv, env) =>
+      new CoarseGrainedExecutorBackend(rpcEnv, driverUrl, executorId, 
hostname, cores,
+        userClassPath, env)
+    }
+    run(driverUrl, executorId, hostname, cores, appId, workerUrl, 
userClassPath, createFn)
     System.exit(0)
   }
 
   private def printUsageAndExit() = {
     // scalastyle:off println
     System.err.println(
       """
-      |Usage: CoarseGrainedExecutorBackend [options]
-      |
-      | Options are:
-      |   --driver-url <driverUrl>
-      |   --executor-id <executorId>
-      |   --hostname <hostname>
-      |   --cores <cores>
-      |   --app-id <appid>
-      |   --worker-url <workerUrl>
-      |   --user-class-path <url>
-      |""".stripMargin)
+        |Usage: CoarseGrainedExecutorBackend [options]
 
 Review comment:
   I don't use an IDE, can't help you there.

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