Merge branch 'master' of github.com:apache/spark into yarn-settings

Author: Andrew Or

.gitignore

@@ -5,6 +5,7 @@
 *.ipr
 *.iml
 *.iws
+*.pyc
 .idea/
 .idea_modules/
 sbt/*.jar
@@ -49,6 +50,8 @@ dependency-reduced-pom.xml
 checkpoint
 derby.log
 dist/
+dev/create-release/*txt
+dev/create-release/*new
 spark-*-bin-*.tgz
 unit-tests.log
 /lib/

LICENSE

@@ -646,7 +646,8 @@ THE SOFTWARE.
 
 ========================================================================
 For Scala Interpreter classes (all .scala files in repl/src/main/scala
-except for Main.Scala, SparkHelper.scala and ExecutorClassLoader.scala):
+except for Main.Scala, SparkHelper.scala and ExecutorClassLoader.scala),
+and for SerializableMapWrapper in JavaUtils.scala:
 ========================================================================
 
 Copyright (c) 2002-2013 EPFL

assembly/pom.xml

@@ -169,16 +169,6 @@
   </build>
 
   <profiles>
-    <profile>
-      <id>yarn-alpha</id>
-      <dependencies>
-        <dependency>
-          <groupId>org.apache.spark</groupId>
-          <artifactId>spark-yarn-alpha_${scala.binary.version}</artifactId>
-          <version>${project.version}</version>
-        </dependency>
-      </dependencies>
-    </profile>
     <profile>
       <id>yarn</id>
       <dependencies>

bin/beeline.cmd

@@ -0,0 +1,21 @@
+@echo off
+
+rem
+rem Licensed to the Apache Software Foundation (ASF) under one or more
+rem contributor license agreements.  See the NOTICE file distributed with
+rem this work for additional information regarding copyright ownership.
+rem The ASF licenses this file to You under the Apache License, Version 2.0
+rem (the "License"); you may not use this file except in compliance with
+rem the License.  You may obtain a copy of the License at
+rem
+rem    http://www.apache.org/licenses/LICENSE-2.0
+rem
+rem Unless required by applicable law or agreed to in writing, software
+rem distributed under the License is distributed on an "AS IS" BASIS,
+rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+rem See the License for the specific language governing permissions and
+rem limitations under the License.
+rem
+
+set SPARK_HOME=%~dp0..
+cmd /V /E /C %SPARK_HOME%\bin\spark-class.cmd org.apache.hive.beeline.BeeLine %*

core/src/main/java/org/apache/spark/SparkJobInfo.java

@@ -17,13 +17,15 @@
 
 package org.apache.spark;
 
+import java.io.Serializable;
+
 /**
  * Exposes information about Spark Jobs.
  *
  * This interface is not designed to be implemented outside of Spark.  We may add additional methods
  * which may break binary compatibility with outside implementations.
  */
-public interface SparkJobInfo {
+public interface SparkJobInfo extends Serializable {
   int jobId();
   int[] stageIds();
   JobExecutionStatus status();

core/src/main/java/org/apache/spark/SparkStageInfo.java

@@ -17,13 +17,15 @@
 
 package org.apache.spark;
 
+import java.io.Serializable;
+
 /**
  * Exposes information about Spark Stages.
  *
  * This interface is not designed to be implemented outside of Spark.  We may add additional methods
  * which may break binary compatibility with outside implementations.
  */
-public interface SparkStageInfo {
+public interface SparkStageInfo extends Serializable {
   int stageId();
   int currentAttemptId();
   long submissionTime();

core/src/main/resources/org/apache/spark/ui/static/webui.css

@@ -171,6 +171,6 @@ span.additional-metric-title {
 
 /* Hide all additional metrics by default. This is done here rather than using JavaScript to
  * avoid slow page loads for stage pages with large numbers (e.g., thousands) of tasks. */
-.scheduler_delay, .gc_time, .deserialization_time, .serialization_time, .getting_result_time {
+.scheduler_delay, .deserialization_time, .serialization_time, .getting_result_time {
   display: none;
 }

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

@@ -1758,7 +1758,7 @@ object SparkContext extends Logging {
 
   @deprecated("Replaced by implicit functions in WritableConverter. This is kept here only for " +
     "backward compatibility.", "1.3.0")
-  def writableWritableConverter[T <: Writable]() =
+  def writableWritableConverter[T <: Writable](): WritableConverter[T] =
     WritableConverter.writableWritableConverter()
 
   /**
@@ -2017,15 +2017,15 @@ object WritableConverter {
     simpleWritableConverter[Boolean, BooleanWritable](_.get)
 
   implicit def bytesWritableConverter(): WritableConverter[Array[Byte]] = {
-    simpleWritableConverter[Array[Byte], BytesWritable](bw =>
+    simpleWritableConverter[Array[Byte], BytesWritable] { bw =>
       // getBytes method returns array which is longer then data to be returned
       Arrays.copyOfRange(bw.getBytes, 0, bw.getLength)
-    )
+    }
   }
 
   implicit def stringWritableConverter(): WritableConverter[String] =
     simpleWritableConverter[String, Text](_.toString)
 
-  implicit def writableWritableConverter[T <: Writable]() =
+  implicit def writableWritableConverter[T <: Writable](): WritableConverter[T] =
     new WritableConverter[T](_.runtimeClass.asInstanceOf[Class[T]], _.asInstanceOf[T])
 }

core/src/main/scala/org/apache/spark/api/java/JavaRDDLike.scala

@@ -211,8 +211,9 @@ trait JavaRDDLike[T, This <: JavaRDDLike[T, This]] extends Serializable {
    * Return an RDD of grouped elements. Each group consists of a key and a sequence of elements
    * mapping to that key.
    */
-  def groupBy[K](f: JFunction[T, K]): JavaPairRDD[K, JIterable[T]] = {
-    implicit val ctagK: ClassTag[K] = fakeClassTag
+  def groupBy[U](f: JFunction[T, U]): JavaPairRDD[U, JIterable[T]] = {
+    // The type parameter is U instead of K in order to work around a compiler bug; see SPARK-4459
+    implicit val ctagK: ClassTag[U] = fakeClassTag
     implicit val ctagV: ClassTag[JList[T]] = fakeClassTag
     JavaPairRDD.fromRDD(groupByResultToJava(rdd.groupBy(f)(fakeClassTag)))
   }
@@ -221,10 +222,11 @@ trait JavaRDDLike[T, This <: JavaRDDLike[T, This]] extends Serializable {
    * Return an RDD of grouped elements. Each group consists of a key and a sequence of elements
    * mapping to that key.
    */
-  def groupBy[K](f: JFunction[T, K], numPartitions: Int): JavaPairRDD[K, JIterable[T]] = {
-    implicit val ctagK: ClassTag[K] = fakeClassTag
+  def groupBy[U](f: JFunction[T, U], numPartitions: Int): JavaPairRDD[U, JIterable[T]] = {
+    // The type parameter is U instead of K in order to work around a compiler bug; see SPARK-4459
+    implicit val ctagK: ClassTag[U] = fakeClassTag
     implicit val ctagV: ClassTag[JList[T]] = fakeClassTag
-    JavaPairRDD.fromRDD(groupByResultToJava(rdd.groupBy(f, numPartitions)(fakeClassTag[K])))
+    JavaPairRDD.fromRDD(groupByResultToJava(rdd.groupBy(f, numPartitions)(fakeClassTag[U])))
   }
 
   /**
@@ -458,8 +460,9 @@ trait JavaRDDLike[T, This <: JavaRDDLike[T, This]] extends Serializable {
   /**
    * Creates tuples of the elements in this RDD by applying `f`.
    */
-  def keyBy[K](f: JFunction[T, K]): JavaPairRDD[K, T] = {
-    implicit val ctag: ClassTag[K] = fakeClassTag
+  def keyBy[U](f: JFunction[T, U]): JavaPairRDD[U, T] = {
+    // The type parameter is U instead of K in order to work around a compiler bug; see SPARK-4459
+    implicit val ctag: ClassTag[U] = fakeClassTag
     JavaPairRDD.fromRDD(rdd.keyBy(f))
   }
 

core/src/main/scala/org/apache/spark/api/java/JavaUtils.scala

@@ -19,7 +19,8 @@ package org.apache.spark.api.java
 
 import com.google.common.base.Optional
 
-import scala.collection.convert.Wrappers.MapWrapper
+import java.{util => ju}
+import scala.collection.mutable
 
 private[spark] object JavaUtils {
   def optionToOptional[T](option: Option[T]): Optional[T] =
@@ -32,7 +33,64 @@ private[spark] object JavaUtils {
   def mapAsSerializableJavaMap[A, B](underlying: collection.Map[A, B]) =
     new SerializableMapWrapper(underlying)
 
+  // Implementation is copied from scala.collection.convert.Wrappers.MapWrapper,
+  // but implements java.io.Serializable. It can't just be subclassed to make it
+  // Serializable since the MapWrapper class has no no-arg constructor. This class
+  // doesn't need a no-arg constructor though.
   class SerializableMapWrapper[A, B](underlying: collection.Map[A, B])
-    extends MapWrapper(underlying) with java.io.Serializable
+    extends ju.AbstractMap[A, B] with java.io.Serializable { self =>
 
+    override def size = underlying.size
+
+    override def get(key: AnyRef): B = try {
+      underlying get key.asInstanceOf[A] match {
+        case None => null.asInstanceOf[B]
+        case Some(v) => v
+      }
+    } catch {
+      case ex: ClassCastException => null.asInstanceOf[B]
+    }
+
+    override def entrySet: ju.Set[ju.Map.Entry[A, B]] = new ju.AbstractSet[ju.Map.Entry[A, B]] {
+      def size = self.size
+
+      def iterator = new ju.Iterator[ju.Map.Entry[A, B]] {
+        val ui = underlying.iterator
+        var prev : Option[A] = None
+
+        def hasNext = ui.hasNext
+
+        def next() = {
+          val (k, v) = ui.next
+          prev = Some(k)
+          new ju.Map.Entry[A, B] {
+            import scala.util.hashing.byteswap32
+            def getKey = k
+            def getValue = v
+            def setValue(v1 : B) = self.put(k, v1)
+            override def hashCode = byteswap32(k.hashCode) + (byteswap32(v.hashCode) << 16)
+            override def equals(other: Any) = other match {
+              case e: ju.Map.Entry[_, _] => k == e.getKey && v == e.getValue
+              case _ => false
+            }
+          }
+        }
+
+        def remove() {
+          prev match {
+            case Some(k) =>
+              underlying match {
+                case mm: mutable.Map[a, _] =>
+                  mm remove k
+                  prev = None
+                case _ =>
+                  throw new UnsupportedOperationException("remove")
+              }
+            case _ =>
+              throw new IllegalStateException("next must be called at least once before remove")
+          }
+        }
+      }
+    }
+  }
 }