tighten the accessibility of deploy.history

Author: CodingCat

core/src/main/scala/org/apache/spark/deploy/history/ApplicationHistoryProvider.scala

@@ -19,7 +19,7 @@ package org.apache.spark.deploy.history
 
 import org.apache.spark.ui.SparkUI
 
-private[spark] case class ApplicationHistoryInfo(
+private[history] case class ApplicationHistoryInfo(
     id: String,
     name: String,
     startTime: Long,
@@ -28,7 +28,7 @@ private[spark] case class ApplicationHistoryInfo(
     sparkUser: String,
     completed: Boolean = false)
 
-private[spark] abstract class ApplicationHistoryProvider {
+private[history] abstract class ApplicationHistoryProvider {
 
   /**
    * Returns a list of applications available for the history server to show.

core/src/main/scala/org/apache/spark/deploy/history/HistoryPage.scala

@@ -23,7 +23,7 @@ import scala.xml.Node
 
 import org.apache.spark.ui.{WebUIPage, UIUtils}
 
-private[spark] class HistoryPage(parent: HistoryServer) extends WebUIPage("") {
+private[history] class HistoryPage(parent: HistoryServer) extends WebUIPage("") {
 
   private val pageSize = 20
   private val plusOrMinus = 2

core/src/main/scala/org/apache/spark/deploy/history/HistoryServerArguments.scala

@@ -23,7 +23,8 @@ import org.apache.spark.util.Utils
 /**
  * Command-line parser for the master.
  */
-private[spark] class HistoryServerArguments(conf: SparkConf, args: Array[String]) extends Logging {
+private[history] class HistoryServerArguments(conf: SparkConf, args: Array[String]) 
+  extends Logging {
   private var propertiesFile: String = null
 
   parse(args.toList)