Overview (Apache Crunch 0.5.0-incubating API)

Core
Package	Description
org.apache.crunch	Client-facing API and core abstractions.
org.apache.crunch.fn	Commonly used functions for manipulating collections.
org.apache.crunch.impl.mem	In-memory Pipeline implementation for rapid prototyping and testing.
org.apache.crunch.impl.mr	A Pipeline implementation that runs on Hadoop MapReduce.
org.apache.crunch.io	Data input and output for Pipelines.
org.apache.crunch.test	Utilities for testing Crunch-based applications.
org.apache.crunch.types	Common functionality for business object serialization.
org.apache.crunch.types.avro	Business object serialization using Apache Avro.
org.apache.crunch.types.writable	Business object serialization using Hadoop's Writables framework.
org.apache.crunch.util	An assorted set of utilities.

Extension Library
Package	Description
org.apache.crunch.lib	Joining, sorting, aggregating, and other commonly used functionality.
org.apache.crunch.lib.join	Inner and outer joins on collections.

User-contributed Functionality
Package	Description
org.apache.crunch.contrib	User contributions that may be interesting for special applications.
org.apache.crunch.contrib.bloomfilter	Support for creating Bloom Filters.
org.apache.crunch.contrib.io.jdbc	Support for reading data from RDBMS using JDBC
org.apache.crunch.contrib.text

Examples
Package	Description
org.apache.crunch.examples	Example applications demonstrating various aspects of Crunch.