4.2 Building

4.2 Building
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Cascading ships with several jars and dependencies in the download archive. Alternatively, Cascading is available over Maven and Ivy through the Conjars repository, along with a number of other Cascading-related projects. See http://conjars.org for more information.

The core Cascading artifacts include the following:

cascading-core-2.2.x.jar: This jar contains the Cascading Core class files. It should be packaged with lib/*.jar when using Hadoop.
cascading-local-2.2.x.jar: This jar contains the Cascading local mode class files. It is not needed when using Hadoop.
cascading-hadoop-2.2.x.jar: This jar contains the Cascading Hadoop specific dependencies. It should be packaged with lib/*.jar when using Hadoop.
cascading-xml-2.2.x.jar: This jar contains Cascading XML module class files and is optional. It should be packaged with lib/xml/*.jar when using Hadoop.

Cascading works with either of the Hadoop processing modes - the default local standalone mode and the distributed cluster mode. As specified in the Hadoop documentation, running in cluster mode requires the creation of a Hadoop job jar that includes the Cascading jars, plus any needed third-party jars, in its lib directory. This is true regardless of whether they are Cascading Hadoop-mode applications or raw Hadoop MapReduce applications.