| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.jwplayer.sqe.trident.aggregator; |
| |
| import com.clearspring.analytics.stream.cardinality.HyperLogLogPlus; |
| import org.apache.storm.trident.operation.TridentCollector; |
| |
| |
| public class HllpAggregator extends CardinalityEstimatorAggregator { |
| private int log2m; |
| |
| public HllpAggregator(int log2m) { |
| this.log2m = log2m; |
| } |
| |
| @Override |
| public HyperLogLogPlus init(Object o, TridentCollector collector) { |
| return new HyperLogLogPlus(log2m, log2m); |
| } |
| } |