Package org.apache.avro.mapred.tether

Run Hadoop MapReduce jobs over Avro data, with map and reduce functions run in a sub-process.

See: Description

Interface Summary

Interface	Description
InputProtocol	Transmit inputs to a map or reduce task sub-process.
InputProtocol.Callback	Transmit inputs to a map or reduce task sub-process.
OutputProtocol	Transmit outputs from a map or reduce task to parent.
OutputProtocol.Callback	Transmit outputs from a map or reduce task to parent.

Class Summary

Class	Description
TetherJob	Constructs and submits tether jobs.

Enum Summary

Enum	Description
TaskType

Package org.apache.avro.mapred.tether Description

Run Hadoop MapReduce jobs over Avro data, with map and reduce functions run in a sub-process. This permits MapReduce programs over Avro data in languages besides Java.

Each language will provide a framework to permit easy implementation of MapReduce programs in that language. Currently only a Java framework has been implemented, for test purposes, so this feature is not yet useful.

This is still an experimental API, subject to change.