ml.shifu.guagua.io.Combinable Maven / Gradle / Ivy
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/*
* Copyright [2013-2015] PayPal Software Foundation
*
* 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.
*/
package ml.shifu.guagua.io;
/**
* {@link Combinable} is to combine {@link Bytable} results together to save memory in master computation.
*
*
* In the future, {@link Combinable} can also be used to combine worker results in two-level scheduling.
*/
public interface Combinable {
/**
* Combine result to existing one.
*/
RESULT combine(RESULT from);
}