| /* |
| * 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.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators; |
| |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.pig.backend.executionengine.ExecException; |
| import org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator; |
| import org.apache.pig.backend.hadoop.executionengine.tez.runtime.ObjectCache; |
| import org.apache.pig.backend.hadoop.executionengine.tez.runtime.TezInput; |
| import org.apache.pig.data.Tuple; |
| import org.apache.pig.impl.plan.OperatorKey; |
| import org.apache.pig.impl.util.Pair; |
| import org.apache.tez.runtime.api.LogicalInput; |
| import org.apache.tez.runtime.library.api.KeyValueReader; |
| |
| public class POMergeCogroupTez extends POMergeCogroup implements TezInput { |
| |
| private static final Log LOG = LogFactory.getLog(POMergeJoinTez.class); |
| private static final long serialVersionUID = 1L; |
| private String inputKey; |
| private transient String cacheKey; |
| private transient KeyValueReader reader; |
| private transient List<Pair<Integer, Tuple>> index; |
| |
| public POMergeCogroupTez(OperatorKey k, List<PhysicalOperator> inpPOs, POLocalRearrange[] lrs, int parallel) { |
| super(k, inpPOs, lrs, parallel); |
| } |
| |
| public POMergeCogroupTez(POMergeCogroup copy) { |
| super(copy); |
| } |
| |
| public void setInputKey(String inputKey) { |
| this.inputKey = inputKey; |
| } |
| |
| @Override |
| public String[] getTezInputs() { |
| return new String[] { this.inputKey }; |
| } |
| |
| @Override |
| public void replaceInput(String oldInputKey, String newInputKey) { |
| this.inputKey = newInputKey; |
| } |
| |
| @Override |
| public void addInputsToSkip(Set<String> inputsToSkip) { |
| cacheKey = "mergecogrp-" + inputKey; |
| Object cacheValue = ObjectCache.getInstance().retrieve(cacheKey); |
| if (cacheValue != null) { |
| inputsToSkip.add(inputKey); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public void attachInputs(Map<String, LogicalInput> inputs, Configuration conf) throws ExecException { |
| Object cacheValue = ObjectCache.getInstance().retrieve(cacheKey); |
| if (cacheValue != null) { |
| this.index = (LinkedList<Pair<Integer, Tuple>>) cacheValue; |
| return; |
| } |
| |
| LogicalInput input = inputs.get(inputKey); |
| if (input == null) { |
| throw new ExecException("Input from vertex " + inputKey + " is missing"); |
| } |
| |
| try { |
| input = inputs.get(this.inputKey); |
| reader = (KeyValueReader) input.getReader(); |
| LOG.info( |
| "Attached input from vertex " + this.inputKey + " : input=" + input + ", reader=" + reader); |
| index = new LinkedList<>(); |
| while (reader.next()) { |
| Tuple origTuple = (Tuple) reader.getCurrentValue(); |
| Tuple copyTuple = mTupleFactory.newTuple(origTuple.getAll()); |
| addTupleToIndex(copyTuple, index); |
| } |
| ObjectCache.getInstance().cache(cacheKey, this.index); |
| } |
| catch (Exception e) { |
| throw new ExecException(e); |
| } |
| } |
| |
| @Override |
| public String name() { |
| return super.name().replace("MergeCogroup", "MergeCogroupTez") + "\t<-\t " + this.inputKey; |
| } |
| |
| @Override |
| protected List<Pair<Integer, Tuple>> readIndex() { |
| return this.index; |
| } |
| |
| @Override |
| public POMergeCogroupTez clone() throws CloneNotSupportedException { |
| return (POMergeCogroupTez) super.clone(); |
| } |
| } |