zhaih commented on code in PR #12660: URL: https://github.com/apache/lucene/pull/12660#discussion_r1367953931
########## lucene/core/src/java/org/apache/lucene/util/hnsw/HnswConcurrentMergeBuilder.java: ########## @@ -0,0 +1,234 @@ +/* + * 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.util.hnsw; + +import static org.apache.lucene.search.DocIdSetIterator.NO_MORE_DOCS; +import static org.apache.lucene.util.hnsw.HnswGraphBuilder.HNSW_COMPONENT; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.ExecutionException; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Future; +import java.util.concurrent.atomic.AtomicInteger; +import org.apache.lucene.util.BitSet; +import org.apache.lucene.util.FixedBitSet; +import org.apache.lucene.util.IOUtils; +import org.apache.lucene.util.InfoStream; +import org.apache.lucene.util.ThreadInterruptedException; + +/** + * A graph builder that manages multiple workers, it only supports adding the whole graph all at + * once. It will spawn a thread for each worker and the workers will pick the work in batches. + */ +public class HnswConcurrentMergeBuilder implements IHnswGraphBuilder { + + private static final int BATCH_SIZE = 2048; + + private final ExecutorService exec; + private final ConcurrentMergeWorker[] workers; + private InfoStream infoStream = InfoStream.getDefault(); + + public HnswConcurrentMergeBuilder( + ExecutorService exec, + int numWorker, + RandomVectorScorerSupplier scorerSupplier, + int M, + int beamWidth, + OnHeapHnswGraph hnsw, + BitSet initializedNodes) + throws IOException { + this.exec = exec; + AtomicInteger workProgress = new AtomicInteger(0); + workers = new ConcurrentMergeWorker[numWorker]; + for (int i = 0; i < numWorker; i++) { + workers[i] = + new ConcurrentMergeWorker( + scorerSupplier.copy(), + M, + beamWidth, + HnswGraphBuilder.randSeed, Review Comment: Yeah I'm not sure what's the best way, but I guess it does not matter that much... -- 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. To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
