1 /** 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 package org.apache.hadoop.hdfs.server.blockmanagement; 19 20 /** 21 * A immutable object that stores the number of live replicas and 22 * the number of decommissined Replicas. 23 */ 24 public class NumberReplicas { 25 private int liveReplicas; 26 private int decommissionedReplicas; 27 private int corruptReplicas; 28 private int excessReplicas; 29 private int replicasOnStaleNodes; 30 NumberReplicas()31 NumberReplicas() { 32 initialize(0, 0, 0, 0, 0); 33 } 34 NumberReplicas(int live, int decommissioned, int corrupt, int excess, int stale)35 NumberReplicas(int live, int decommissioned, int corrupt, int excess, int stale) { 36 initialize(live, decommissioned, corrupt, excess, stale); 37 } 38 initialize(int live, int decommissioned, int corrupt, int excess, int stale)39 void initialize(int live, int decommissioned, int corrupt, int excess, int stale) { 40 liveReplicas = live; 41 decommissionedReplicas = decommissioned; 42 corruptReplicas = corrupt; 43 excessReplicas = excess; 44 replicasOnStaleNodes = stale; 45 } 46 liveReplicas()47 public int liveReplicas() { 48 return liveReplicas; 49 } decommissionedReplicas()50 public int decommissionedReplicas() { 51 return decommissionedReplicas; 52 } corruptReplicas()53 public int corruptReplicas() { 54 return corruptReplicas; 55 } excessReplicas()56 public int excessReplicas() { 57 return excessReplicas; 58 } 59 60 /** 61 * @return the number of replicas which are on stale nodes. 62 * This is not mutually exclusive with the other counts -- ie a 63 * replica may count as both "live" and "stale". 64 */ replicasOnStaleNodes()65 public int replicasOnStaleNodes() { 66 return replicasOnStaleNodes; 67 } 68 } 69