Merge remote-tracking branch 'apache-github/master' into remove-binaries

Conflicts:
	core/src/test/scala/org/apache/spark/DriverSuite.scala
	docs/python-programming-guide.md

1 files changed, 25 insertions, 7 deletions

diff --git a/project/SparkBuild.scala b/project/SparkBuild.scala
index 5f57c964bd..a6c560d5c6 100644
--- a/project/SparkBuild.scala
+++ b/project/SparkBuild.scala
@@ -89,12 +89,11 @@ object SparkBuild extends Build {
   }
 
   // Conditionally include the yarn sub-project
-  lazy val yarn = Project("yarn", file(if (isNewHadoop) "new-yarn" else "yarn"), settings = yarnSettings) dependsOn(core)
+  lazy val yarnAlpha = Project("yarn-alpha", file("yarn/alpha"), settings = yarnAlphaSettings) dependsOn(core)
+  lazy val yarn = Project("yarn", file("yarn/stable"), settings = yarnSettings) dependsOn(core)
 
-  //lazy val yarn = Project("yarn", file("yarn"), settings = yarnSettings) dependsOn(core)
-
-  lazy val maybeYarn = if (isYarnEnabled) Seq[ClasspathDependency](yarn) else Seq[ClasspathDependency]()
-  lazy val maybeYarnRef = if (isYarnEnabled) Seq[ProjectReference](yarn) else Seq[ProjectReference]()
+  lazy val maybeYarn = if (isYarnEnabled) Seq[ClasspathDependency](if (isNewHadoop) yarn else yarnAlpha) else Seq[ClasspathDependency]()
+  lazy val maybeYarnRef = if (isYarnEnabled) Seq[ProjectReference](if (isNewHadoop) yarn else yarnAlpha) else Seq[ProjectReference]()
 
   // Everything except assembly, tools and examples belong to packageProjects
   lazy val packageProjects = Seq[ProjectReference](core, repl, bagel, streaming, mllib) ++ maybeYarnRef
@@ -325,10 +324,29 @@ object SparkBuild extends Build {
     )
   )
 
-  def yarnSettings = sharedSettings ++ Seq(
-    name := "spark-yarn"
+  def yarnCommonSettings = sharedSettings ++ Seq(
+    unmanagedSourceDirectories in Compile <++= baseDirectory { base =>
+      Seq(
+         base / "../common/src/main/scala"
+      )
+    },
+
+    unmanagedSourceDirectories in Test <++= baseDirectory { base =>
+      Seq(
+         base / "../common/src/test/scala"
+      )
+    }
+
   ) ++ extraYarnSettings
 
+  def yarnAlphaSettings = yarnCommonSettings ++ Seq(
+    name := "spark-yarn-alpha"
+  )
+
+  def yarnSettings = yarnCommonSettings ++ Seq(
+    name := "spark-yarn"
+  )
+
   // Conditionally include the YARN dependencies because some tools look at all sub-projects and will complain
   // if we refer to nonexistent dependencies (e.g. hadoop-yarn-api from a Hadoop version without YARN).
   def extraYarnSettings = if(isYarnEnabled) yarnEnabledSettings else Seq()