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5821fa042c
This aggregation computes unique term counts using the hyperloglog++ algorithm which uses linear counting to estimate low cardinalities and hyperloglog on higher cardinalities. Since this algorithm works on hashes, it is useful for high-cardinality fields to store the hash of values directly in the index, which is the purpose of the new `murmur3` field type. This is less necessary on low-cardinality string fields because the aggregator is smart enough to only compute the hash once per unique value per segment thanks to ordinals, or on numeric fields since hashing them is very fast. Close #5426
101 lines
4.4 KiB
Java
101 lines
4.4 KiB
Java
/*
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* Licensed to Elasticsearch under one or more contributor
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* license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright
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* ownership. Elasticsearch licenses this file to you under
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* the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.elasticsearch.search.aggregations;
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import com.google.common.collect.Lists;
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import org.elasticsearch.common.inject.AbstractModule;
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import org.elasticsearch.common.inject.multibindings.Multibinder;
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import org.elasticsearch.search.aggregations.bucket.filter.FilterParser;
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import org.elasticsearch.search.aggregations.bucket.geogrid.GeoHashGridParser;
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import org.elasticsearch.search.aggregations.bucket.global.GlobalParser;
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import org.elasticsearch.search.aggregations.bucket.histogram.DateHistogramParser;
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import org.elasticsearch.search.aggregations.bucket.histogram.HistogramParser;
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import org.elasticsearch.search.aggregations.bucket.missing.MissingParser;
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import org.elasticsearch.search.aggregations.bucket.nested.NestedParser;
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import org.elasticsearch.search.aggregations.bucket.range.RangeParser;
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import org.elasticsearch.search.aggregations.bucket.range.date.DateRangeParser;
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import org.elasticsearch.search.aggregations.bucket.range.geodistance.GeoDistanceParser;
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import org.elasticsearch.search.aggregations.bucket.range.ipv4.IpRangeParser;
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import org.elasticsearch.search.aggregations.bucket.terms.TermsParser;
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import org.elasticsearch.search.aggregations.metrics.avg.AvgParser;
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import org.elasticsearch.search.aggregations.metrics.cardinality.CardinalityParser;
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import org.elasticsearch.search.aggregations.metrics.max.MaxParser;
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import org.elasticsearch.search.aggregations.metrics.min.MinParser;
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import org.elasticsearch.search.aggregations.metrics.percentiles.PercentilesParser;
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import org.elasticsearch.search.aggregations.metrics.stats.StatsParser;
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import org.elasticsearch.search.aggregations.metrics.stats.extended.ExtendedStatsParser;
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import org.elasticsearch.search.aggregations.metrics.sum.SumParser;
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import org.elasticsearch.search.aggregations.metrics.valuecount.ValueCountParser;
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import java.util.List;
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/**
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* The main module for the get (binding all get components together)
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*/
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public class AggregationModule extends AbstractModule {
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private List<Class<? extends Aggregator.Parser>> parsers = Lists.newArrayList();
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public AggregationModule() {
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parsers.add(AvgParser.class);
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parsers.add(SumParser.class);
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parsers.add(MinParser.class);
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parsers.add(MaxParser.class);
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parsers.add(StatsParser.class);
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parsers.add(ExtendedStatsParser.class);
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parsers.add(ValueCountParser.class);
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parsers.add(PercentilesParser.class);
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parsers.add(CardinalityParser.class);
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parsers.add(GlobalParser.class);
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parsers.add(MissingParser.class);
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parsers.add(FilterParser.class);
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parsers.add(TermsParser.class);
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parsers.add(RangeParser.class);
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parsers.add(DateRangeParser.class);
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parsers.add(IpRangeParser.class);
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parsers.add(HistogramParser.class);
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parsers.add(DateHistogramParser.class);
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parsers.add(GeoDistanceParser.class);
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parsers.add(GeoHashGridParser.class);
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parsers.add(NestedParser.class);
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}
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/**
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* Enabling extending the get module by adding a custom aggregation parser.
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*
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* @param parser The parser for the custom aggregator.
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*/
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public void addAggregatorParser(Class<? extends Aggregator.Parser> parser) {
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parsers.add(parser);
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}
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@Override
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protected void configure() {
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Multibinder<Aggregator.Parser> multibinder = Multibinder.newSetBinder(binder(), Aggregator.Parser.class);
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for (Class<? extends Aggregator.Parser> parser : parsers) {
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multibinder.addBinding().to(parser);
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}
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bind(AggregatorParsers.class).asEagerSingleton();
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bind(AggregationParseElement.class).asEagerSingleton();
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bind(AggregationPhase.class).asEagerSingleton();
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}
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}
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