CS6240 Group 10 Project

Fall 2020

Visit https://masonleon.github.io/largescale-spark-graph-analytics/ for additional project information.

Code author

April Gustafson, Mason Leon, Matthew Sobkowski

Installation

These components are installed:

• OpenJDK 1.8.0_265
• Scala 2.11.12
• Hadoop 2.9.1
• Spark 2.3.1 (without bundled Hadoop)
• Maven 3.6.3
• AWS CLI (for EMR execution)

Dataset

https://snap.stanford.edu/data/soc-LiveJournal1.html

To download to input dir:

```
bash ./data-download.sh
```

Environment

1. Example ~/.bash_aliases:

   export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
   export HADOOP_HOME=$HADOOP_HOME/hadoop/hadoop-2.9.1  
   export SCALA_HOME=$SCALA_HOME/scala/scala-2.11.12  
   export SPARK_HOME=$SPARK_HOME/spark/spark-2.3.1-bin-without-hadoop  
   export YARN_CONF_DIR=$HADOOP_HOME/etc/hadoop  
   export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$SCALA_HOME/bin:$SPARK_HOME/bin  
   export SPARK_DIST_CLASSPATH=$(hadoop classpath)    
   

2. Explicitly set JAVA_HOME in $HADOOP_HOME/etc/hadoop/hadoop-env.sh:

    export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64 
   

3. [Optional] Setup Docker Environment
   https://docs.docker.com/get-docker/

Execution

All of the build & execution commands are organized in the Makefile.

1. Unzip project file.
2. Open command prompt.
3. Navigate to directory where project files unzipped.
4. Edit the Makefile to customize the environment at the top.
   Sufficient for standalone: hadoop.root, jar.name, local.input
   Other defaults acceptable for running standalone.
5. Standalone Hadoop:
   make switch-standalone -- set standalone Hadoop environment (execute once)
   make local
6. Pseudo-Distributed Hadoop: (https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/SingleCluster.html#Pseudo-Distributed_Operation)
   make switch-pseudo -- set pseudo-clustered Hadoop environment (execute once)
   make pseudo -- first execution
   make pseudoq -- later executions since namenode and datanode already running
7. AWS EMR Hadoop: (you must configure the emr.* config parameters at top of Makefile)
   make upload-input-aws -- only before first execution
   make aws -- check for successful execution with web interface (aws.amazon.com)
   download-output-aws -- after successful execution & termination
8. Docker Jupyter Scala/Spark Almond Notebook: (https://github.com/almond-sh/almond) make run-container-spark-jupyter-almond -- run docker container with scala + spark kernel for local standalone copy token from terminal and paste in browser http://127.0.0.1:8888/?token=<TOKEN_FROM_TERMINAL>
9. Docker Standalone Hadoop/Spark make run-container-spark-jar-local -- run docker container environment with compiled .jar app make run-container-spark-jar-local 2>&1 | tee logs/logfile.log -- run docker container environment with compiled .jar app and redirect standard error+output to log