| /* |
| * 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.giraph.master; |
| |
| import org.apache.giraph.master.input.MasterInputSplitsHandler; |
| import org.apache.giraph.partition.PartitionStats; |
| import org.apache.giraph.reducers.ReduceOperation; |
| import org.apache.giraph.utils.BlockingElementsSet; |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.util.Progressable; |
| |
| import com.google.common.collect.Iterables; |
| |
| import java.util.List; |
| |
| /** |
| * Handler for all master communications |
| */ |
| public class MasterGlobalCommHandler implements MasterGlobalCommUsage { |
| /** Aggregator handler */ |
| private final MasterAggregatorHandler aggregatorHandler; |
| /** Input splits handler*/ |
| private final MasterInputSplitsHandler inputSplitsHandler; |
| /** Partition stats received from workers */ |
| private final BlockingElementsSet<List<PartitionStats>> partitionStats = |
| new BlockingElementsSet<>(); |
| |
| /** |
| * Constructor |
| * |
| * @param aggregatorHandler Aggregator handler |
| * @param inputSplitsHandler Input splits handler |
| */ |
| public MasterGlobalCommHandler( |
| MasterAggregatorHandler aggregatorHandler, |
| MasterInputSplitsHandler inputSplitsHandler) { |
| this.aggregatorHandler = aggregatorHandler; |
| this.inputSplitsHandler = inputSplitsHandler; |
| } |
| |
| public MasterAggregatorHandler getAggregatorHandler() { |
| return aggregatorHandler; |
| } |
| |
| public MasterInputSplitsHandler getInputSplitsHandler() { |
| return inputSplitsHandler; |
| } |
| |
| @Override |
| public <S, R extends Writable> void registerReducer(String name, |
| ReduceOperation<S, R> reduceOp) { |
| aggregatorHandler.registerReducer(name, reduceOp); |
| } |
| |
| @Override |
| public <S, R extends Writable> void registerReducer(String name, |
| ReduceOperation<S, R> reduceOp, R globalInitialValue) { |
| aggregatorHandler.registerReducer(name, reduceOp, globalInitialValue); |
| } |
| |
| @Override |
| public <R extends Writable> R getReduced(String name) { |
| return aggregatorHandler.getReduced(name); |
| } |
| |
| @Override |
| public void broadcast(String name, Writable value) { |
| aggregatorHandler.broadcast(name, value); |
| } |
| |
| /** |
| * Received partition stats from a worker |
| * |
| * @param partitionStats Partition stats |
| */ |
| public void receivedPartitionStats(List<PartitionStats> partitionStats) { |
| this.partitionStats.offer(partitionStats); |
| } |
| |
| /** |
| * Get all partition stats. Blocks until all workers have sent their stats |
| * |
| * @param numWorkers Number of workers to wait for |
| * @param progressable Progressable to report progress to |
| * @return All partition stats |
| */ |
| public Iterable<PartitionStats> getAllPartitionStats(int numWorkers, |
| Progressable progressable) { |
| return Iterables.concat( |
| partitionStats.getElements(numWorkers, progressable)); |
| } |
| } |