Building the Spark source code with Maven

Installing Spark using binaries works fine in most cases. For advanced cases, such as the following (but not limited to), compiling from the source code is a better option:

• Compiling for a specific Hadoop version
• Adding the Hive integration
• Adding the YARN integration

Getting ready

The following are the prerequisites for this recipe to work:

• Java 1.8 or a later version
• Maven 3.x

How to do it...

The following are the steps to build the Spark source code with Maven:

1. Increase MaxPermSize of the heap:

       $ echo "export _JAVA_OPTIONS="-XX:MaxPermSize=1G""  >> 
         /home/hduser/.bashrc

2. Open a new terminal window and download the Spark source code from GitHub:

        $ wget https://github.com/apache/spark/archive/branch-2.1.zip

3. Unpack the archive:

        $ unzip branch-2.1.zip

4. Rename unzipped folder to spark:

        $ mv spark-branch-2.1 spark

5. Move to the spark directory:

        $ cd spark

6. Compile the sources with the YARN-enabled, Hadoop version 2.7, and Hive-enabled flags and skip the tests for faster compilation:

      $ mvn -Pyarn -Phadoop-2.7 -Dhadoop.version=2.7.0 -Phive -
        DskipTests clean package

7. Move the conf folder to the etc folder so that it can be turned into a symbolic link:

        $ sudo mv spark/conf /etc/

8. Move the spark directory to /opt as it's an add-on software package:

        $ sudo mv spark /opt/infoobjects/spark

9. Change the ownership of the spark home directory to root:

        $ sudo chown -R root:root /opt/infoobjects/spark

10. Change the permissions of the spark home directory, namely 0755 = user:rwx group:r-x world:r-x:

        $ sudo chmod -R 755 /opt/infoobjects/spark

11. Move to the spark home directory:

        $ cd /opt/infoobjects/spark

12. Create a symbolic link:

        $ sudo ln -s /etc/spark conf

13. Put the Spark executable in the path by editing .bashrc:

        $ echo "export PATH=$PATH:/opt/infoobjects/spark/bin" >> 
          /home/hduser/.bashrc

14. Create the log directory in /var:

        $ sudo mkdir -p /var/log/spark

15. Make hduser the owner of Spark's log directory:

        $ sudo chown -R hduser:hduser /var/log/spark

16. Create Spark's tmp directory:

        $ mkdir /tmp/spark

17. Configure Spark with the help of the following command lines:

     $ cd /etc/spark
$ echo "export HADOOP_CONF_DIR=/opt/infoobjects/hadoop/etc/hadoop" 
       >> spark-env.sh
$ echo "export YARN_CONF_DIR=/opt/infoobjects/hadoop/etc/Hadoop" 
       >> spark-env.sh
$ echo "export SPARK_LOG_DIR=/var/log/spark" >> spark-env.sh
$ echo "export SPARK_WORKER_DIR=/tmp/spark" >> spark-env.sh