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Mara - Java Annotations Framework for MapReduce on Hadoop

There is a newer version: 0.9.6

package com.conversantmedia.mapreduce.tool.annotation;

/*
 * #%L
 * Mara Annotations/API
 * ~~
 * Copyright (C) 2015 Conversant
 * ~~
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */


import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;


@Inherited
@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface ReducerInfo {

	/**
	 * Reducer class to use.
	 * @return	the reducer class for this job
	 */
	@SuppressWarnings("rawtypes")
	Class value()
		default org.apache.hadoop.mapreduce.Reducer.class;

	/**
	 * 
	 * @return 	the key/value type for this reducer's output
	 */
	KeyValue output() default @KeyValue;
}