Abstract usages of converting spark opts to java opts

core/src/main/scala/org/apache/spark/SparkConf.scala

@@ -40,6 +40,8 @@ import scala.collection.mutable.HashMap
  */
 class SparkConf(loadDefaults: Boolean) extends Cloneable with Logging {
 
+  import SparkConf._
+
   /** Create a SparkConf that loads defaults from system properties and the classpath */
   def this() = this(true)
 
@@ -198,7 +200,7 @@ class SparkConf(loadDefaults: Boolean) extends Cloneable with Logging {
      *
      *   E.g. spark.akka.option.x.y.x = "value"
      */
-    getAll.filter {case (k, v) => k.startsWith("akka.")}
+    getAll.filter { case (k, _) => isAkkaConf(k) }
 
   /** Does the configuration contain a given parameter? */
   def contains(key: String): Boolean = settings.contains(key)
@@ -292,3 +294,22 @@ class SparkConf(loadDefaults: Boolean) extends Cloneable with Logging {
     settings.toArray.sorted.map{case (k, v) => k + "=" + v}.mkString("\n")
   }
 }
+
+private[spark] object SparkConf {
+  /**
+   * Return whether the given config is an akka config (e.g. akka.actor.provider).
+   * Note that this does not include spark-specific akka configs (e.g. spark.akka.timeout).
+   */
+  def isAkkaConf(name: String): Boolean = name.startsWith("akka.")
+
+  /**
+   * Return whether the given config should be passed to an executor on start-up.
+   *
+   * When connecting to the scheduler, the executor backend needs certain akka and authentication
+   * settings to connect to the scheduler, while the rest of the spark configs can be inherited
+   * from the driver later.
+   */
+  def isExecutorStartupConf(name: String): Boolean = {
+    isAkkaConf(name) || name.startsWith("spark.akka") || name.startsWith("spark.auth")
+  }
+}

core/src/main/scala/org/apache/spark/scheduler/cluster/SparkDeploySchedulerBackend.scala

@@ -17,7 +17,7 @@
 
 package org.apache.spark.scheduler.cluster
 
-import org.apache.spark.{Logging, SparkContext}
+import org.apache.spark.{Logging, SparkConf, SparkContext}
 import org.apache.spark.deploy.{ApplicationDescription, Command}
 import org.apache.spark.deploy.client.{AppClient, AppClientListener}
 import org.apache.spark.scheduler.{ExecutorExited, ExecutorLossReason, SlaveLost, TaskSchedulerImpl}
@@ -55,9 +55,7 @@ private[spark] class SparkDeploySchedulerBackend(
       }
 
     // Start executors with a few necessary configs for registering with the scheduler
-    val sparkJavaOpts = Utils.sparkJavaOpts(conf, (key: String) =>
-      key.startsWith("spark.akka") || key.startsWith("spark.auth")
-    )
+    val sparkJavaOpts = Utils.sparkJavaOpts(conf, SparkConf.isExecutorStartupConf)
     val javaOpts = sparkJavaOpts ++ extraJavaOpts
     val command = Command("org.apache.spark.executor.CoarseGrainedExecutorBackend",
       args, sc.executorEnvs, classPathEntries, libraryPathEntries, javaOpts)

yarn/common/src/main/scala/org/apache/spark/deploy/yarn/ClientBase.scala

@@ -37,7 +37,9 @@ import org.apache.hadoop.yarn.api.protocolrecords._
 import org.apache.hadoop.yarn.api.records._
 import org.apache.hadoop.yarn.conf.YarnConfiguration
 import org.apache.hadoop.yarn.util.Records
+
 import org.apache.spark.{SparkException, Logging, SparkConf, SparkContext}
+import org.apache.spark.util.Utils
 
 /**
  * The entry point (starting in Client#main() and Client#run()) for launching Spark on YARN. The
@@ -383,9 +385,7 @@ trait ClientBase extends Logging {
     // Forward the Spark configuration to the application master / executors.
     // TODO: it might be nicer to pass these as an internal environment variable rather than
     // as Java options, due to complications with string parsing of nested quotes.
-    for ((k, v) <- sparkConf.getAll) {
-      javaOpts += "-D" + k + "=" + "\\\"" + v + "\\\""
-    }
+    javaOpts ++= Utils.sparkJavaOpts(sparkConf)
 
     if (args.amClass == classOf[ApplicationMaster].getName) {
       sparkConf.getOption("spark.driver.extraJavaOptions")

yarn/common/src/main/scala/org/apache/spark/deploy/yarn/ExecutorRunnableUtil.scala

@@ -31,6 +31,7 @@ import org.apache.hadoop.yarn.conf.YarnConfiguration
 import org.apache.hadoop.yarn.util.{ConverterUtils, Records}
 
 import org.apache.spark.{Logging, SparkConf}
+import org.apache.spark.util.Utils
 
 trait ExecutorRunnableUtil extends Logging {
 
@@ -66,12 +67,7 @@ trait ExecutorRunnableUtil extends Logging {
     // registers with the Scheduler and transfers the spark configs. Since the Executor backend
     // uses Akka to connect to the scheduler, the akka settings are needed as well as the
     // authentication settings.
-    sparkConf.getAll.
-      filter { case (k, v) => k.startsWith("spark.auth") || k.startsWith("spark.akka") }.
-      foreach { case (k, v) => javaOpts += "-D" + k + "=" + "\\\"" + v + "\\\"" }
-
-    sparkConf.getAkkaConf.
-      foreach { case (k, v) => javaOpts += "-D" + k + "=" + "\\\"" + v + "\\\"" }
+    javaOpts ++= Utils.sparkJavaOpts(sparkConf, SparkConf.isExecutorStartupConf)
 
     // Commenting it out for now - so that people can refer to the properties if required. Remove
     // it once cpuset version is pushed out.