| /* |
| * 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.mapreduce.v2.hs; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.classification.InterfaceStability.Unstable; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.mapreduce.v2.api.MRDelegationTokenIdentifier; |
| import org.apache.hadoop.security.token.delegation.DelegationKey; |
| |
| @Private |
| @Unstable |
| public class HistoryServerNullStateStoreService |
| extends HistoryServerStateStoreService { |
| |
| @Override |
| protected void initStorage(Configuration conf) throws IOException { |
| // Do nothing |
| } |
| |
| @Override |
| protected void startStorage() throws IOException { |
| // Do nothing |
| } |
| |
| @Override |
| protected void closeStorage() throws IOException { |
| // Do nothing |
| } |
| |
| @Override |
| public HistoryServerState loadState() throws IOException { |
| throw new UnsupportedOperationException( |
| "Cannot load state from null store"); |
| } |
| |
| @Override |
| public void storeToken(MRDelegationTokenIdentifier tokenId, Long renewDate) |
| throws IOException { |
| // Do nothing |
| } |
| |
| @Override |
| public void updateToken(MRDelegationTokenIdentifier tokenId, Long renewDate) |
| throws IOException { |
| // Do nothing |
| } |
| |
| @Override |
| public void removeToken(MRDelegationTokenIdentifier tokenId) |
| throws IOException { |
| // Do nothing |
| } |
| |
| @Override |
| public void storeTokenMasterKey(DelegationKey key) throws IOException { |
| // Do nothing |
| } |
| |
| @Override |
| public void removeTokenMasterKey(DelegationKey key) throws IOException { |
| // Do nothing |
| } |
| } |