/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.hadoop.mapred;
import org.apache.hadoop.ipc.VersionedProtocol;
/**
* The protocol is used to set and get the clusterManagerSafeMode flag
* on the ProxyJobTracker
*/
public interface ClusterManagerSafeModeProtocol extends VersionedProtocol {
/**
* The versionID is used to compare if the versions are correct
*/
final int versionID = 1;
/**
* Set the clusterManagerSafeMode flag on ProxyJobTracker
* @param safeMode Is the value of the clusterManagerSafeMode flag that we
* want to be set.
* @return 0 if the flag was set successfully.
*/
int setClusterManagerSafeModeFlag(boolean safeMode);
/**
* Get the clusterManagerSafeMode flag from the ProxyJobTracker
* @return A boolean which is the value of the clusterManagerSafeMode flag.
*/
boolean getClusterManagerSafeModeFlag();
}