/*
 * Copyright 2009-2013 by The Regents of the University of California
 * 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 from
 * 
 *     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 edu.uci.ics.pregelix.api.util;

import edu.uci.ics.pregelix.api.job.ICheckpointHook;

/**
 * A conservative checkpoint hook which does checkpoint every 2 supersteps
 * 
 * @author yingyib
 */
public class ConservativeCheckpointHook implements ICheckpointHook {

    @Override
    public boolean checkpoint(int superstep) {
        if (superstep % 2 == 0) {
            return true;
        } else {
            return false;
        }
    }

}