How to upgrade Spark 1.3.1 to Spark 1.4.0

1) Download Spark 1.4.0 from https://spark.apache.org/downloads.html

2)Check the dependencies Scala 2.11, Maven 3.3.3 using commands
scala -version & mvn -version
3)Now we need to build Spark using Apache Maven, run 
mvn -DskipTests clean package   

4)Wait till build gets success and this process would take around 45mins.

5)Check scala shell and pyspark shell using commands 

    ./bin/spark-shell (Scala)

    ./bin/pyspark       (Python)

6)If you need to use Spark 1.4 with Ipython notebook 

•   Use this link to setup Spark on Ipython notebook ( http://advancedatascience.blogspot.com/2015/06/how-to-use-spark-on-ipython-notebook.html) and change the spark home directory path in this file \00-pyspark-setup.py