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 19 package org.apache.hadoop.hbase.master; 20 21 import java.util.Map; 22 import java.util.Map.Entry; 23 24 /** 25 * This is the interface that will expose information to hadoop1/hadoop2 implementations of the 26 * MetricsMasterSource. 27 */ 28 public interface MetricsMasterWrapper { 29 30 /** 31 * Get ServerName 32 */ 33 String getServerName(); 34 35 /** 36 * Get Average Load 37 * 38 * @return Average Load 39 */ 40 double getAverageLoad(); 41 42 /** 43 * Get the Cluster ID 44 * 45 * @return Cluster ID 46 */ 47 String getClusterId(); 48 49 /** 50 * Get the Zookeeper Quorum Info 51 * 52 * @return Zookeeper Quorum Info 53 */ 54 String getZookeeperQuorum(); 55 56 /** 57 * Get the co-processors 58 * 59 * @return Co-processors 60 */ 61 String[] getCoprocessors(); 62 63 /** 64 * Get hbase master start time 65 * 66 * @return Start time of master in milliseconds 67 */ 68 long getStartTime(); 69 70 /** 71 * Get the hbase master active time 72 * 73 * @return Time in milliseconds when master became active 74 */ 75 long getActiveTime(); 76 77 /** 78 * Whether this master is the active master 79 * 80 * @return True if this is the active master 81 */ 82 boolean getIsActiveMaster(); 83 84 /** 85 * Get the live region servers 86 * 87 * @return Live region servers 88 */ 89 String getRegionServers(); 90 91 /** 92 * Get the number of live region servers 93 * 94 * @return number of Live region servers 95 */ 96 97 int getNumRegionServers(); 98 99 /** 100 * Get the dead region servers 101 * 102 * @return Dead region Servers 103 */ 104 String getDeadRegionServers(); 105 106 /** 107 * Get the number of dead region servers 108 * 109 * @return number of Dead region Servers 110 */ 111 int getNumDeadRegionServers(); 112 113 /** 114 * Get the number of master WAL files. 115 */ 116 long getNumWALFiles(); 117 118 119 /** 120 * Gets the space usage and limit for each table. 121 */ 122 Map<String,Entry<Long,Long>> getTableSpaceUtilization(); 123 124 /** 125 * Gets the space usage and limit for each namespace. 126 */ 127 Map<String,Entry<Long,Long>> getNamespaceSpaceUtilization(); 128 }