| /* |
| * 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.drill.exec.store.schedule; |
| |
| import com.carrotsearch.hppc.ObjectFloatHashMap; |
| import com.carrotsearch.hppc.cursors.ObjectFloatCursor; |
| import com.carrotsearch.hppc.cursors.ObjectLongCursor; |
| import org.apache.drill.exec.physical.EndpointAffinity; |
| import org.apache.drill.exec.proto.CoordinationProtos.DrillbitEndpoint; |
| import com.google.common.base.Stopwatch; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.concurrent.TimeUnit; |
| |
| public class AffinityCreator { |
| |
| private static final Logger logger = LoggerFactory.getLogger(AffinityCreator.class); |
| |
| public static <T extends CompleteWork> List<EndpointAffinity> getAffinityMap(List<T> work){ |
| Stopwatch watch = logger.isDebugEnabled() ? Stopwatch.createStarted() : null; |
| |
| long totalBytes = work.stream() |
| .mapToLong(CompleteWork::getTotalBytes) |
| .sum(); |
| |
| ObjectFloatHashMap<DrillbitEndpoint> affinities = new ObjectFloatHashMap<>(); |
| for (CompleteWork entry : work) { |
| for (ObjectLongCursor<DrillbitEndpoint> cursor : entry.getByteMap()) { |
| long bytes = cursor.value; |
| float affinity = totalBytes == 0 ? 0.0F : (float) bytes / (float) totalBytes; |
| affinities.putOrAdd(cursor.key, affinity, affinity); |
| } |
| } |
| |
| List<EndpointAffinity> affinityList = new LinkedList<>(); |
| for (ObjectFloatCursor<DrillbitEndpoint> d : affinities) { |
| logger.debug("Endpoint {} has affinity {}", d.key.getAddress(), d.value); |
| affinityList.add(new EndpointAffinity(d.key, d.value)); |
| } |
| |
| if (watch != null) { |
| logger.debug("Took {} ms to get operator affinity", watch.elapsed(TimeUnit.MILLISECONDS)); |
| } |
| return affinityList; |
| } |
| } |