Update build docs

1 files changed, 7 insertions, 13 deletions

diff --git a/docs/running-on-yarn.md b/docs/running-on-yarn.md
index 9c2cedfd88..6bada9bdd7 100644
--- a/docs/running-on-yarn.md
+++ b/docs/running-on-yarn.md
@@ -6,7 +6,7 @@ title: Launching Spark on YARN
 Experimental support for running over a [YARN (Hadoop
 NextGen)](http://hadoop.apache.org/docs/r2.0.2-alpha/hadoop-yarn/hadoop-yarn-site/YARN.html)
 cluster was added to Spark in version 0.6.0.  This was merged into master as part of 0.7 effort.
-To build spark core with YARN support, please use the hadoop2-yarn profile.
+To build spark with YARN support, please use the hadoop2-yarn profile.
 Ex:  mvn -Phadoop2-yarn clean install
 
 # Building spark core consolidated jar.
@@ -15,18 +15,12 @@ We need a consolidated spark core jar (which bundles all the required dependenci
 This can be built either through sbt or via maven.
 
 -   Building spark assembled jar via sbt.
-    It is a manual process of enabling it in project/SparkBuild.scala.
-Please comment out the
-  HADOOP_VERSION, HADOOP_MAJOR_VERSION and HADOOP_YARN
-variables before the line 'For Hadoop 2 YARN support'
-Next, uncomment the subsequent 3 variable declaration lines (for these three variables) which enable hadoop yarn support.
+Enable YARN support by setting `SPARK_WITH_YARN=true` when invoking sbt:
 
-Assembly of the jar Ex:
-
-    ./sbt/sbt clean assembly
+    SPARK_HADOOP_VERSION=2.0.5-alpha SPARK_WITH_YARN=true ./sbt/sbt clean assembly
 
 The assembled jar would typically be something like :
-`./core/target/spark-core-assembly-0.8.0-SNAPSHOT.jar`
+`./yarn/target/spark-yarn-assembly-0.8.0-SNAPSHOT.jar`
 
 
 -   Building spark assembled jar via Maven.
@@ -34,16 +28,16 @@ The assembled jar would typically be something like :
 
 Something like this. Ex:
 
-    mvn -Phadoop2-yarn clean package -DskipTests=true
+    mvn -Phadoop2-yarn -Dhadoop.version=2.0.5-alpha clean package -DskipTests=true
 
 
 This will build the shaded (consolidated) jar. Typically something like :
-`./repl-bin/target/spark-repl-bin-<VERSION>-shaded-hadoop2-yarn.jar`
+`./yarn/target/spark-yarn-bin-<VERSION>-shaded.jar`
 
 
 # Preparations
 
-- Building spark core assembled jar (see above).
+- Building spark-yarn assembly (see above).
 - Your application code must be packaged into a separate JAR file.
 
 If you want to test out the YARN deployment mode, you can use the current Spark examples. A `spark-examples_{{site.SCALA_VERSION}}-{{site.SPARK_VERSION}}` file can be generated by running `sbt/sbt package`. NOTE: since the documentation you're reading is for Spark version {{site.SPARK_VERSION}}, we are assuming here that you have downloaded Spark {{site.SPARK_VERSION}} or checked it out of source control. If you are using a different version of Spark, the version numbers in the jar generated by the sbt package command will obviously be different.