| /* |
| * 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 org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.pig.backend.executionengine.ExecException; |
| import org.apache.pig.backend.hadoop.executionengine.physicalLayer.Result; |
| import org.apache.pig.data.DataType; |
| import org.apache.pig.data.SchemaTupleBackend; |
| import org.apache.pig.data.SchemaTupleClassGenerator; |
| import org.apache.pig.data.SchemaTupleFactory; |
| import org.apache.pig.data.Tuple; |
| import org.apache.pig.impl.logicalLayer.schema.Schema; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| public class POFRJoinSpark extends POFRJoin { |
| private static final Log log = LogFactory.getLog(POFRJoinSpark.class); |
| |
| private Map<String, List<Tuple>> broadcasts; |
| |
| public POFRJoinSpark(POFRJoin copy) throws ExecException { |
| super(copy); |
| } |
| |
| @Override |
| protected void setUpHashMap() throws ExecException { |
| log.info("Building replication hash table"); |
| |
| SchemaTupleFactory[] inputSchemaTupleFactories = new SchemaTupleFactory[inputSchemas.length]; |
| SchemaTupleFactory[] keySchemaTupleFactories = new SchemaTupleFactory[inputSchemas.length]; |
| for (int i = 0; i < inputSchemas.length; i++) { |
| addSchemaToFactories(inputSchemas[i], inputSchemaTupleFactories, i); |
| addSchemaToFactories(keySchemas[i], keySchemaTupleFactories, i); |
| } |
| |
| replicates.set(fragment, null); |
| int i = -1; |
| long start = System.currentTimeMillis(); |
| for (int k = 0; k < inputSchemas.length; ++k) { |
| ++i; |
| |
| SchemaTupleFactory inputSchemaTupleFactory = inputSchemaTupleFactories[i]; |
| SchemaTupleFactory keySchemaTupleFactory = keySchemaTupleFactories[i]; |
| |
| if (i == fragment) { |
| replicates.set(i, null); |
| continue; |
| } |
| |
| TupleToMapKey replicate = new TupleToMapKey(1000, keySchemaTupleFactory); |
| |
| log.debug("Completed setup. Trying to build replication hash table"); |
| List<Tuple> tuples = broadcasts.get(parentPlan.getPredecessors(this).get(i).getOperatorKey().toString()); |
| |
| POLocalRearrange localRearrange = LRs[i]; |
| |
| for (Tuple t : tuples) { |
| localRearrange.attachInput(t); |
| Result res = localRearrange.getNextTuple(); |
| if (getReporter() != null) { |
| getReporter().progress(); |
| } |
| Tuple tuple = (Tuple) res.result; |
| if (isKeyNull(tuple.get(1))) continue; |
| Object key = tuple.get(1); |
| Tuple value = getValueTuple(localRearrange, tuple); |
| |
| if (replicate.get(key) == null) { |
| replicate.put(key, new POMergeJoin.TuplesToSchemaTupleList(1, inputSchemaTupleFactory)); |
| } |
| |
| replicate.get(key).add(value); |
| |
| } |
| replicates.set(i, replicate); |
| } |
| long end = System.currentTimeMillis(); |
| log.debug("Hash Table built. Time taken: " + (end - start)); |
| } |
| |
| @Override |
| public String name() { |
| return getAliasString() + "FRJoinSpark[" + DataType.findTypeName(resultType) |
| + "]" + " - " + mKey.toString(); |
| } |
| |
| private void addSchemaToFactories(Schema schema, SchemaTupleFactory[] schemaTupleFactories, int index) { |
| if (schema != null) { |
| log.debug("Using SchemaTuple for FR Join Schema: " + schema); |
| schemaTupleFactories[index] = SchemaTupleBackend.newSchemaTupleFactory(schema, false, SchemaTupleClassGenerator.GenContext.FR_JOIN); |
| } |
| } |
| |
| public void attachInputs(Map<String, List<Tuple>> broadcasts) { |
| this.broadcasts = broadcasts; |
| } |
| } |