[SPARK-2140] Updating heap memory calculation for YARN stable and alpha.

Updated pull request, reflecting YARN stable and alpha states. I am getting intermittent test failures on my own test infrastructure. Is that tracked anywhere yet?

Author: Chris Cope <ccope@resilientscience.com>

Closes #2253 from copester/master and squashes the following commits:

5ad89da [Chris Cope] [SPARK-2140] Removing calculateAMMemory functions since they are no longer needed.
52b4e45 [Chris Cope] [SPARK-2140] Updating heap memory calculation for YARN stable and alpha.

yarn/alpha/src/main/scala/org/apache/spark/deploy/yarn/Client.scala

@@ -103,14 +103,6 @@ class Client(clientArgs: ClientArguments, hadoopConf: Configuration, spConf: Spa
     appContext
   }
 
-  def calculateAMMemory(newApp: GetNewApplicationResponse): Int = {
-    val minResMemory = newApp.getMinimumResourceCapability().getMemory()
-    val amMemory = ((args.amMemory / minResMemory) * minResMemory) +
-          ((if ((args.amMemory % minResMemory) == 0) 0 else minResMemory) -
-          memoryOverhead)
-    amMemory
-  }
-
   def setupSecurityToken(amContainer: ContainerLaunchContext) = {
     // Setup security tokens.
     val dob = new DataOutputBuffer()

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

@@ -300,8 +300,6 @@ trait ClientBase extends Logging {
     retval.toString
   }
 
-  def calculateAMMemory(newApp: GetNewApplicationResponse): Int
-
   def setupSecurityToken(amContainer: ContainerLaunchContext)
 
   def createContainerLaunchContext(
@@ -346,7 +344,7 @@ trait ClientBase extends Logging {
     }
     amContainer.setEnvironment(env)
 
-    val amMemory = calculateAMMemory(newApp)
+    val amMemory = args.amMemory
 
     val javaOpts = ListBuffer[String]()
 

yarn/common/src/test/scala/org/apache/spark/deploy/yarn/ClientBaseSuite.scala

@@ -238,9 +238,6 @@ class ClientBaseSuite extends FunSuite with Matchers {
       val sparkConf: SparkConf,
       val yarnConf: YarnConfiguration) extends ClientBase {
 
-    override def calculateAMMemory(newApp: GetNewApplicationResponse): Int =
-      throw new UnsupportedOperationException()
-
     override def setupSecurityToken(amContainer: ContainerLaunchContext): Unit =
       throw new UnsupportedOperationException()
 

yarn/stable/src/main/scala/org/apache/spark/deploy/yarn/Client.scala

@@ -103,15 +103,6 @@ class Client(clientArgs: ClientArguments, hadoopConf: Configuration, spConf: Spa
       clusterMetrics.getNumNodeManagers)
   }
 
-  def calculateAMMemory(newApp: GetNewApplicationResponse) :Int = {
-    // TODO: Need a replacement for the following code to fix -Xmx?
-    // val minResMemory: Int = newApp.getMinimumResourceCapability().getMemory()
-    // var amMemory = ((args.amMemory / minResMemory) * minResMemory) +
-    //  ((if ((args.amMemory % minResMemory) == 0) 0 else minResMemory) -
-    //    memoryOverhead )
-    args.amMemory
-  }
-
   def setupSecurityToken(amContainer: ContainerLaunchContext) = {
     // Setup security tokens.
     val dob = new DataOutputBuffer()