Introduction

Details in using the examples provided as separate downloads.

Example Details

• ApacheLogCascade
• CrawlDataWordCountCascade
• PearsonDistanceAssembly

If Groovy scripting is more your style, see our Groovy syntax page.

Running

Two sample applications, with source are provided on the downloads page.

To give Cascading a quick whirl, download the cascading archive and one of the example applications. Untar them both into a new directory so that you have a 'cascading' and either 'loganalysis' or 'wordcount' directories in the same parent directory.

Next, you must initialize your local Hadoop environment. For example, call

export HADOOP_HOME=~/hadoop
export PATH=$HADOOP_HOME/bin/:$PATH

where HADOOP_HOME points to the root of your Hadoop installation.

Finally, per the README.TXT file in your example application, call

ant jar
hadoop jar ./build/example.jar args...

Note these examples work great with a cluster enabled. So if some files/directories don't show up in the current directory, check your HDFS user directory.