| /** |
| * 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.hdfs.server.datanode.extdataset; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.channels.ClosedChannelException; |
| |
| import org.apache.hadoop.fs.StorageType; |
| import org.apache.hadoop.hdfs.server.datanode.FileIoProvider; |
| import org.apache.hadoop.hdfs.server.datanode.checker.VolumeCheckResult; |
| import org.apache.hadoop.hdfs.server.datanode.fsdataset.DataNodeVolumeMetrics; |
| import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsDatasetSpi; |
| import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeReference; |
| import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi; |
| |
| public class ExternalVolumeImpl implements FsVolumeSpi { |
| |
| @Override |
| public String[] getBlockPoolList() { |
| return null; |
| } |
| |
| @Override |
| public long getAvailable() throws IOException { |
| return 0; |
| } |
| |
| @Override |
| public String getBasePath() { |
| return null; |
| } |
| |
| @Override |
| public String getPath(String bpid) throws IOException { |
| return null; |
| } |
| |
| @Override |
| public File getFinalizedDir(String bpid) throws IOException { |
| return null; |
| } |
| |
| @Override |
| public FsVolumeReference obtainReference() throws ClosedChannelException { |
| return null; |
| } |
| |
| @Override |
| public String getStorageID() { |
| return null; |
| } |
| |
| @Override |
| public StorageType getStorageType() { |
| return StorageType.DEFAULT; |
| } |
| |
| @Override |
| public boolean isTransientStorage() { |
| return false; |
| } |
| |
| @Override |
| public void reserveSpaceForReplica(long bytesToReserve) { |
| } |
| |
| @Override |
| public void releaseReservedSpace(long bytesToRelease) { |
| } |
| |
| @Override |
| public void releaseLockedMemory(long bytesToRelease) { |
| } |
| |
| @Override |
| public BlockIterator newBlockIterator(String bpid, String name) { |
| return null; |
| } |
| |
| @Override |
| public byte[] loadLastPartialChunkChecksum( |
| File blockFile, File metaFile) throws IOException { |
| return null; |
| } |
| |
| @Override |
| public BlockIterator loadBlockIterator(String bpid, String name) |
| throws IOException { |
| return null; |
| } |
| |
| @Override |
| public FsDatasetSpi getDataset() { |
| return null; |
| } |
| |
| @Override |
| public FileIoProvider getFileIoProvider() { |
| return null; |
| } |
| |
| @Override |
| public DataNodeVolumeMetrics getMetrics() { |
| return null; |
| } |
| |
| @Override |
| public VolumeCheckResult check(VolumeCheckContext context) |
| throws Exception { |
| return VolumeCheckResult.HEALTHY; |
| } |
| } |