romseygeek commented on a change in pull request #1351: LUCENE-9280: Collectors to skip noncompetitive documents URL: https://github.com/apache/lucene-solr/pull/1351#discussion_r406053016
########## File path: lucene/core/src/test/org/apache/lucene/search/TestSortOptimization.java ########## @@ -0,0 +1,160 @@ +/* + * 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 org.apache.lucene.search; + +import org.apache.lucene.document.Document; +import org.apache.lucene.document.FloatDocValuesField; +import org.apache.lucene.document.LongPoint; +import org.apache.lucene.document.FloatPoint; +import org.apache.lucene.document.NumericDocValuesField; +import org.apache.lucene.index.DirectoryReader; +import org.apache.lucene.index.IndexReader; +import org.apache.lucene.index.IndexWriter; +import org.apache.lucene.index.IndexWriterConfig; +import org.apache.lucene.store.Directory; +import org.apache.lucene.util.LuceneTestCase; + +import java.io.IOException; + +public class TestSortOptimization extends LuceneTestCase { + + public void testLongSortOptimization() throws IOException { + final Directory dir = newDirectory(); + final IndexWriter writer = new IndexWriter(dir, new IndexWriterConfig()); + final int numDocs = atLeast(10000); + for (int i = 0; i < numDocs; ++i) { + final Document doc = new Document(); + doc.add(new NumericDocValuesField("my_field", i)); + doc.add(new LongPoint("my_field", i)); + writer.addDocument(doc); + } + final IndexReader reader = DirectoryReader.open(writer); + IndexSearcher searcher = new IndexSearcher(reader); + final SortField sortField = new SortField("my_field", SortField.Type.LONG); + sortField.allowFilterNonCompetitveDocs(); Review comment: Can we avoid having to set this explicitly? The fact that we're setting a totalHitsThreshold on the collector should be enough to tell the comparator that we're enabling skipping. Maybe have a `SkippableSortField` implementation that wraps an existing SortField and overrides `getComparator()`; then in `TopFieldCollector.create()` we check if totalHitsThreshold is set and if so rebuild the sort ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
