/**
* 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 java.util.List;
import java.util.concurrent.TimeUnit;
import org.apache.drill.exec.physical.EndpointAffinity;
import org.apache.drill.exec.proto.CoordinationProtos.DrillbitEndpoint;
import com.google.common.collect.Lists;
import com.carrotsearch.hppc.ObjectFloatOpenHashMap;
import com.carrotsearch.hppc.cursors.ObjectFloatCursor;
import com.carrotsearch.hppc.cursors.ObjectLongCursor;
import com.google.common.base.Stopwatch;
public class AffinityCreator {
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(AffinityCreator.class);
public static <T extends CompleteWork> List<EndpointAffinity> getAffinityMap(List<T> work){
Stopwatch watch = new Stopwatch();
long totalBytes = 0;
for (CompleteWork entry : work) {
totalBytes += entry.getTotalBytes();
}
ObjectFloatOpenHashMap<DrillbitEndpoint> affinities = new ObjectFloatOpenHashMap<DrillbitEndpoint>();
for (CompleteWork entry : work) {
for (ObjectLongCursor<DrillbitEndpoint> cursor : entry.getByteMap()) {
long bytes = cursor.value;
float affinity = (float)bytes / (float)totalBytes;
logger.debug("Work: {} Endpoint: {} Bytes: {}", work, cursor.key.getAddress(), bytes);
affinities.putOrAdd(cursor.key, affinity, affinity);
}
}
List<EndpointAffinity> affinityList = Lists.newLinkedList();
for (ObjectFloatCursor<DrillbitEndpoint> d : affinities) {
logger.debug("Endpoint {} has affinity {}", d.key.getAddress(), d.value);
affinityList.add(new EndpointAffinity(d.key, d.value));
}
logger.debug("Took {} ms to get operator affinity", watch.elapsed(TimeUnit.MILLISECONDS));
return affinityList;
}
}