001/** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.fs; 019 020import java.io.IOException; 021 022import org.apache.hadoop.classification.InterfaceAudience; 023import org.apache.hadoop.classification.InterfaceStability; 024 025/** 026 * Wrapper for {@link BlockLocation} that also adds {@link VolumeId} volume 027 * location information for each replica. 028 */ 029@InterfaceStability.Unstable 030@InterfaceAudience.Public 031public class BlockStorageLocation extends BlockLocation { 032 033 private final VolumeId[] volumeIds; 034 035 public BlockStorageLocation(BlockLocation loc, VolumeId[] volumeIds) 036 throws IOException { 037 // Initialize with data from passed in BlockLocation 038 super(loc.getNames(), loc.getHosts(), loc.getTopologyPaths(), loc 039 .getOffset(), loc.getLength(), loc.isCorrupt()); 040 this.volumeIds = volumeIds; 041 } 042 043 /** 044 * Gets the list of {@link VolumeId} corresponding to the block's replicas. 045 * 046 * @return volumeIds list of VolumeId for the block's replicas 047 */ 048 public VolumeId[] getVolumeIds() { 049 return volumeIds; 050 } 051}