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Use BoostQuery rather than FunctionScoreQuery for query-time indices_boost (#52272)

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This is a trivial change, but it should result in a slightly more efficient query boost.
This commit is contained in:
Alan Woodward 2020-02-24 14:28:51 +00:00
parent 33131e2dcd
commit 7dc41a3b83
1 changed files with 2 additions and 3 deletions
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5
server/src/main/java/org/elasticsearch/search/DefaultSearchContext.java
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@ -21,6 +21,7 @@ package org.elasticsearch.search;
import org.apache.lucene.search.BooleanClause.Occur;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.BoostQuery;
import org.apache.lucene.search.Collector;
import org.apache.lucene.search.FieldDoc;
import org.apache.lucene.search.MatchNoDocsQuery;
@ -32,8 +33,6 @@ import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.lease.Releasables;
import org.elasticsearch.common.lucene.search.Queries;
import org.elasticsearch.common.lucene.search.function.FunctionScoreQuery;
import org.elasticsearch.common.lucene.search.function.WeightFactorFunction;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.util.BigArrays;
import org.elasticsearch.index.IndexService;
@ -254,7 +253,7 @@ final class DefaultSearchContext extends SearchContext {
parsedQuery(ParsedQuery.parsedMatchAllQuery());
}
if (queryBoost() != AbstractQueryBuilder.DEFAULT_BOOST) {
parsedQuery(new ParsedQuery(new FunctionScoreQuery(query(), new WeightFactorFunction(queryBoost)), parsedQuery()));
parsedQuery(new ParsedQuery(new BoostQuery(query(), queryBoost), parsedQuery()));
}
this.query = buildFilteredQuery(query);
if (rewrite) {