Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/3861#discussion_r24644566
--- Diff:
core/src/main/scala/org/apache/spark/executor/CoarseGrainedMesosExecutorBackend.scala
---
@@ -0,0 +1,212 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.executor
+
+import org.apache.spark.{SparkConf, Logging, SecurityManager}
+import org.apache.mesos.{Executor => MesosExecutor, ExecutorDriver,
MesosExecutorDriver, MesosNativeLibrary}
+import org.apache.spark.util.{Utils, SignalLogger}
+import org.apache.spark.deploy.SparkHadoopUtil
+import org.apache.mesos.Protos._
+import org.apache.spark.deploy.worker.StandaloneWorkerShuffleService
+import scala.collection.JavaConversions._
+import scala.io.Source
+import java.io.{File, PrintWriter}
+
+/**
+ * The Coarse grained Mesos executor backend is responsible for launching
the shuffle service
+ * and the CoarseGrainedExecutorBackend actor.
+ * This is assuming the scheduler detected that the shuffle service is
enabled and launches
+ * this class instead of CoarseGrainedExecutorBackend directly.
+ */
+private[spark] class CoarseGrainedMesosExecutorBackend(val sparkConf:
SparkConf)
+ extends MesosExecutor
+ with Logging {
+
+ private var shuffleService: StandaloneWorkerShuffleService = null
+ private var driver: ExecutorDriver = null
+ private var executorProc: Process = null
+ private var taskId: TaskID = null
+ @volatile var killed = false
+
+ override def registered(
+ driver: ExecutorDriver,
+ executorInfo: ExecutorInfo,
+ frameworkInfo: FrameworkInfo,
+ slaveInfo: SlaveInfo) {
+ this.driver = driver
+ logInfo("Coarse Grained Mesos Executor '" +
executorInfo.getExecutorId.getValue +
+ "' is registered.")
+
+ if (shuffleService == null) {
+ sparkConf.set("spark.shuffle.service.enabled", "true")
--- End diff --
We shouldn't set this config ourselves; it is meant to be set by the user.
What we should do here is check whether the user set it and then start the
shuffle service if so.
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