| /** |
| * 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.yarn.server.applicationhistoryservice; |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.Map; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.classification.InterfaceStability.Unstable; |
| import org.apache.hadoop.service.AbstractService; |
| import org.apache.hadoop.yarn.api.records.ApplicationAttemptId; |
| import org.apache.hadoop.yarn.api.records.ApplicationId; |
| import org.apache.hadoop.yarn.api.records.ContainerId; |
| import org.apache.hadoop.yarn.server.applicationhistoryservice.records.ApplicationAttemptFinishData; |
| import org.apache.hadoop.yarn.server.applicationhistoryservice.records.ApplicationAttemptHistoryData; |
| import org.apache.hadoop.yarn.server.applicationhistoryservice.records.ApplicationAttemptStartData; |
| import org.apache.hadoop.yarn.server.applicationhistoryservice.records.ApplicationFinishData; |
| import org.apache.hadoop.yarn.server.applicationhistoryservice.records.ApplicationHistoryData; |
| import org.apache.hadoop.yarn.server.applicationhistoryservice.records.ApplicationStartData; |
| import org.apache.hadoop.yarn.server.applicationhistoryservice.records.ContainerFinishData; |
| import org.apache.hadoop.yarn.server.applicationhistoryservice.records.ContainerHistoryData; |
| import org.apache.hadoop.yarn.server.applicationhistoryservice.records.ContainerStartData; |
| |
| /** |
| * Dummy implementation of {@link ApplicationHistoryStore}. If this |
| * implementation is used, no history data will be persisted. |
| * |
| */ |
| @Unstable |
| @Private |
| public class NullApplicationHistoryStore extends AbstractService implements |
| ApplicationHistoryStore { |
| |
| public NullApplicationHistoryStore() { |
| super(NullApplicationHistoryStore.class.getName()); |
| } |
| |
| @Override |
| public void applicationStarted(ApplicationStartData appStart) |
| throws IOException { |
| } |
| |
| @Override |
| public void applicationFinished(ApplicationFinishData appFinish) |
| throws IOException { |
| } |
| |
| @Override |
| public void applicationAttemptStarted( |
| ApplicationAttemptStartData appAttemptStart) throws IOException { |
| } |
| |
| @Override |
| public void applicationAttemptFinished( |
| ApplicationAttemptFinishData appAttemptFinish) throws IOException { |
| } |
| |
| @Override |
| public void containerStarted(ContainerStartData containerStart) |
| throws IOException { |
| } |
| |
| @Override |
| public void containerFinished(ContainerFinishData containerFinish) |
| throws IOException { |
| } |
| |
| @Override |
| public ApplicationHistoryData getApplication(ApplicationId appId) |
| throws IOException { |
| return null; |
| } |
| |
| @Override |
| public Map<ApplicationId, ApplicationHistoryData> getAllApplications() |
| throws IOException { |
| return Collections.emptyMap(); |
| } |
| |
| @Override |
| public Map<ApplicationAttemptId, ApplicationAttemptHistoryData> |
| getApplicationAttempts(ApplicationId appId) throws IOException { |
| return Collections.emptyMap(); |
| } |
| |
| @Override |
| public ApplicationAttemptHistoryData getApplicationAttempt( |
| ApplicationAttemptId appAttemptId) throws IOException { |
| return null; |
| } |
| |
| @Override |
| public ContainerHistoryData getContainer(ContainerId containerId) |
| throws IOException { |
| return null; |
| } |
| |
| @Override |
| public ContainerHistoryData getAMContainer(ApplicationAttemptId appAttemptId) |
| throws IOException { |
| return null; |
| } |
| |
| @Override |
| public Map<ContainerId, ContainerHistoryData> getContainers( |
| ApplicationAttemptId appAttemptId) throws IOException { |
| return Collections.emptyMap(); |
| } |
| |
| } |