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.giraph.metrics; 20 21 /** 22 * Aggregator over metrics with long values 23 */ 24 public final class AggregatedMetricLong extends AggregatedMetric<Long> { 25 /** 26 * Constructor 27 */ 28 public AggregatedMetricLong() { 29 min = new ValueWithHostname<>(Long.MAX_VALUE); 30 max = new ValueWithHostname<>(Long.MIN_VALUE); 31 sum = (long) 0; 32 } 33 34 @Override 35 public void addItem(Long value, String hostnamePartitionId) { 36 if (value < min.getValue()) { 37 min.set(value, hostnamePartitionId); 38 } 39 if (value > max.getValue()) { 40 max.set(value, hostnamePartitionId); 41 } 42 sum += value; 43 count++; 44 } 45 46 @Override 47 public double mean() { 48 return sum / (double) count; 49 } 50 }