Hog

Hog is an interactive development environment that was created to assist analysts and developers with Apache Pig script creation requiring minimal knowledge of the language. The web application that was constructed provides a resource for script generation, analyzing output as well as archiving scripts. Using the Simple environment, users have drag and drop capabilities to generate scripts. The Complex side of the application provides a development environment that lets developers create, save and analyze output of their scripts.

Prerequisites

Install Java

• Mac OS

  brew cask install java
  

• CentOS

  yum install -y java-1.8.0-openjdk OR yum install -y java-1.7.0-openjdk
  

• Ubuntu

  apt-get install default-jdk
  

Install Apache Pig Client

• Mac OS

  brew install pig
  

• CentOS or Ubuntu

  mkdir -p /etc/pig/0.15.0 &&\
  cd /etc/pig/0.15.0 &&\
  wget -q -P /etc/pig/0.15.0 'http://apache.cs.utah.edu/pig/pig-0.15.0/pig-0.15.0.tar.gz' &&\
  tar xf pig-0.15.0.tar.gz &&\
  rm pig-0.15.0.tar.gz &&\
  chown root:root -R pig-0.15.0 &&\
  mv pig-0.15.0/* . &&\
  rm -rf pig-0.15.0
  

Install Apache Hadoop Client

• Mac OS

  brew install hadoop
  

• CentOS or Ubuntu

  mkdir -p /etc/hadoop/2.7.1 &&\
  cd /etc/hadoop/2.7.1 &&\
  wget -q -P /etc/hadoop/2.7.1 'http://apache.cs.utah.edu/hadoop/common/hadoop-2.7.1/hadoop-2.7.1.tar.gz' &&\
  tar xf hadoop-2.7.1.tar.gz &&\
  rm hadoop-2.7.1.tar.gz &&\
  chown root:root -R hadoop-2.7.1 &&\
  mv hadoop-2.7.1/* . &&\
  rm -rf hadoop-2.7.1
  

Configure Hadoop and Pig Client to run locally or with an Exisiting Hadoop Cluster

To configure your Pig client to run locally edit the pig.properties file with this parameter:

exectype=local

To configure your Hadoop and Pig clients to work with an exisiting Hadoop cluster, please follow the steps below.

Either by updating your .bashrc or be exporting enviroment variables:

• Configure Hadoop Client

  export HADOOP_HOME=/etc/hadoop/2.7.1
  export HADOOP_PREFIX=$HADOOP_HOME
  export PATH=$HADOOP_HOME/bin:$PATH
  

From an exisiting Hadoop cluster, add your existing hadoop/conf/*.xml to your $HADOOP_HOME/etc/hadoop/

• Configure Pig Client

  export PIG_HOME=/etc/pig/0.15.0
  export PATH=$PIG_HOME/bin:$PATH
  

To test your Hadoop client run: hadoop fs -ls / This should display any files or subdirectories in HDFS from your / directory

To test your Pig client run: pig -x mapreduce This will connect to HDFS and your YARN Resource Manager within the Pig grunt shell

Install node and npm

• Node.js >= v6.5.0

Recommended way to install node is NVM

nvm install 6

Clone Hog from the Github repository

git clone https://github.com/KeyWCorp/hog.git
cd hog

Installing files

You will need to install node_modules and bower_components (If prompted to choose a version choose the option that corresponds to hog)

npm run build

If running as root use this option

npm run build:root

If you have an older version of hog run the DB migrate

gulp migrate
mv /path/to/hog/server/api/pig/pig.data.db.mig /path/to/hog/server/api/pig/pig.data.db
mv /path/to/hog/server/api/settings/settings.data.db.mig /path/to/hog/server/api/settings/settings.data.db

Move others as needed.

Running Hog

Open a second terminal

cd /path/to/hog
npm start

A tab in your browser will automatically open to 'localhost:9000' with the script running. We find the program runs best using a Chrome web browser.