Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/2020#discussion_r16423385
--- Diff:
yarn/common/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala
---
@@ -0,0 +1,449 @@
+/*
+ * 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.deploy.yarn
+
+import java.io.IOException
+import java.net.Socket
+import java.util.concurrent.atomic.{AtomicBoolean, AtomicReference}
+
+import scala.collection.JavaConversions._
+import scala.util.Try
+
+import akka.actor._
+import akka.remote._
+import org.apache.hadoop.conf.Configuration
+import org.apache.hadoop.fs.{FileSystem, Path}
+import org.apache.hadoop.util.ShutdownHookManager
+import org.apache.hadoop.yarn.api._
+import org.apache.hadoop.yarn.api.records._
+import org.apache.hadoop.yarn.conf.YarnConfiguration
+
+import org.apache.spark.{Logging, SecurityManager, SparkConf, SparkContext}
+import org.apache.spark.deploy.SparkHadoopUtil
+import org.apache.spark.scheduler.cluster.CoarseGrainedSchedulerBackend
+import
org.apache.spark.scheduler.cluster.CoarseGrainedClusterMessages.AddWebUIFilter
+import org.apache.spark.util.{AkkaUtils, SignalLogger, Utils}
+
+/**
+ * Common application master functionality for Spark on Yarn.
+ */
+private[spark] class ApplicationMaster(args: ApplicationMasterArguments,
+ client: YarnRMClient) extends Logging {
+ // TODO: Currently, task to container is computed once (TaskSetManager)
- which need not be
+ // optimal as more containers are available. Might need to handle this
better.
+ private val ALLOCATE_HEARTBEAT_INTERVAL = 100
+
+ private val sparkConf = new SparkConf()
+ private val yarnConf: YarnConfiguration = new YarnConfiguration(new
Configuration())
+ private val isDriver = args.userClass != null
+
+ // Default to numExecutors * 2, with minimum of 3
+ private val maxNumExecutorFailures =
sparkConf.getInt("spark.yarn.max.executor.failures",
+ sparkConf.getInt("spark.yarn.max.worker.failures",
math.max(args.numExecutors * 2, 3)))
+
+ private var finished = false
+ private var registered = false
+ private var reporterThread: Thread = _
+ private var allocator: YarnAllocator = _
+
+ // Fields used in client mode.
+ private var actorSystem: ActorSystem = null
+ private var actor: ActorRef = _
+
+ // Fields used in cluster mode.
+ private val sparkContextRef = new AtomicReference[SparkContext](null)
+ private val userResult = new AtomicBoolean(false)
+
+ final def run(): Unit = {
+ // Setup the directories so things go to YARN approved directories
rather
+ // than user specified and /tmp.
+ System.setProperty("spark.local.dir", getLocalDirs())
--- End diff --
fyi this is going to conflict with https://github.com/apache/spark/pull/2002
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