/**
* 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 java.io.IOException;
import org.apache.hadoop.ipc.VersionedProtocol;
/**
* Protocol for admin operations. This is a framework-public interface and is
* NOT_TO_BE_USED_BY_USERS_DIRECTLY.
*/
public interface AdminOperationsProtocol extends VersionedProtocol {
/**
* Version 1: Initial version. Added refreshQueueAcls.
* Version 2: Added node refresh facility
*/
public static final long versionID = 2L;
/**
* Refresh the queue acls in use currently.
*/
void refreshQueueAcls() throws IOException;
/**
* Refresh the node list at the {@link JobTracker}
*/
void refreshNodes() throws IOException;
}