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_r257385246
 
 

 ##########
 File path: 
core/src/main/scala/org/apache/spark/executor/CoarseGrainedExecutorBackend.scala
 ##########
 @@ -225,19 +240,19 @@ private[spark] object CoarseGrainedExecutorBackend 
extends Logging {
         SparkHadoopUtil.get.addDelegationTokens(tokens, driverConf)
       }
 
-      val env = SparkEnv.createExecutorEnv(
-        driverConf, executorId, hostname, cores, cfg.ioEncryptionKey, isLocal 
= false)
+      val env = SparkEnv.createExecutorEnv(driverConf, arguments.executorId, 
arguments.hostname,
+        arguments.cores, cfg.ioEncryptionKey, isLocal = false)
 
-      env.rpcEnv.setupEndpoint("Executor", new CoarseGrainedExecutorBackend(
-        env.rpcEnv, driverUrl, executorId, hostname, cores, userClassPath, 
env))
-      workerUrl.foreach { url =>
+      env.rpcEnv.setupEndpoint("Executor", backendCreateFn(env.rpcEnv, 
arguments, env))
+      arguments.workerUrl.foreach { url =>
         env.rpcEnv.setupEndpoint("WorkerWatcher", new 
WorkerWatcher(env.rpcEnv, url))
       }
       env.rpcEnv.awaitTermination()
     }
   }
 
-  def main(args: Array[String]) {
+  def parseArguments(args: Array[String], classNameForEntry: String)
+    : CoarseGrainedExecutorBackendArguments = {
 
 Review comment:
   Don't think of it as "2 spaces here, 4 spaces there". Think that method 
declarations should stand about from the method body. And if you indent both 
the same, that does not happen.

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