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.hbase.master.balancer; 019 020import org.apache.hadoop.hbase.RegionMetrics; 021import org.apache.hadoop.hbase.Size; 022import org.apache.yetus.audience.InterfaceAudience; 023import org.apache.yetus.audience.InterfaceStability; 024 025/** 026 * Wrapper class for the few fields required by the {@link StochasticLoadBalancer} from the full 027 * {@link RegionMetrics}. 028 */ 029@InterfaceAudience.Private 030@InterfaceStability.Evolving 031class BalancerRegionLoad { 032 private final long readRequestsCount; 033 private final long cpRequestsCount; 034 private final long writeRequestsCount; 035 private final int memStoreSizeMB; 036 private final int storefileSizeMB; 037 private final int regionSizeMB; 038 private final float currentRegionPrefetchRatio; 039 040 BalancerRegionLoad(RegionMetrics regionMetrics) { 041 readRequestsCount = regionMetrics.getReadRequestCount(); 042 cpRequestsCount = regionMetrics.getCpRequestCount(); 043 writeRequestsCount = regionMetrics.getWriteRequestCount(); 044 memStoreSizeMB = (int) regionMetrics.getMemStoreSize().get(Size.Unit.MEGABYTE); 045 storefileSizeMB = (int) regionMetrics.getStoreFileSize().get(Size.Unit.MEGABYTE); 046 regionSizeMB = (int) regionMetrics.getRegionSizeMB().get(Size.Unit.MEGABYTE); 047 currentRegionPrefetchRatio = regionMetrics.getCurrentRegionCachedRatio(); 048 } 049 050 public long getReadRequestsCount() { 051 return readRequestsCount; 052 } 053 054 public long getCpRequestsCount() { 055 return cpRequestsCount; 056 } 057 058 public long getWriteRequestsCount() { 059 return writeRequestsCount; 060 } 061 062 public int getMemStoreSizeMB() { 063 return memStoreSizeMB; 064 } 065 066 public int getStorefileSizeMB() { 067 return storefileSizeMB; 068 } 069 070 public int getRegionSizeMB() { 071 return regionSizeMB; 072 } 073 074 public float getCurrentRegionCacheRatio() { 075 return currentRegionPrefetchRatio; 076 } 077}