This is a simple library demonstrating the analysis of the CommonCrawl dataset through implementing the canonical Hadoop Hello World program, a simple word counter.

To build

You'll need to have Apache Ant (http://ant.apache.org/manual/install.html) installed, and once you do, just run a:

ant dist

This step will compile the libraries and Hadoop code into an Elastic MapReduce- friendly JAR at dist/lib/HelloWorld.jar, suitable for use as a custom JAR-based Elastic MapReduce workflow.

To run locally

You'll need to be running Hadoop, and if you don't have it installed, Cloudera provides a useful set of OS-specific Hadoop packages which will make it easy. Check out their site:

https://ccp.cloudera.com/display/SUPPORT/Downloads

Once you've got Hadoop installed, you can use the 'hadoop jar' task to execute the tutorial code. Here's the pattern:

hadoop jar /dist/lib/HelloWorld.jar org.commoncrawl.tutorial.HelloWorld <Amazon AWS access key ID> <Amazon AWS secret access key> <CommonCrawl crawl files to use as input> <HDFS output location>