| /** |
| * 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.spark.optimizer; |
| |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.pig.FuncSpec; |
| import org.apache.pig.backend.hadoop.executionengine.spark.operator.NativeSparkOperator; |
| import org.apache.pig.backend.hadoop.executionengine.spark.plan.SparkOpPlanVisitor; |
| import org.apache.pig.backend.hadoop.executionengine.spark.plan.SparkOperPlan; |
| import org.apache.pig.backend.hadoop.executionengine.spark.plan.SparkOperator; |
| import org.apache.pig.impl.PigContext; |
| import org.apache.pig.impl.PigImplConstants; |
| import org.apache.pig.impl.builtin.GFCross; |
| import org.apache.pig.impl.plan.DependencyOrderWalker; |
| import org.apache.pig.impl.plan.VisitorException; |
| |
| public class ParallelismSetter extends SparkOpPlanVisitor { |
| private JobConf jobConf; |
| |
| public ParallelismSetter(SparkOperPlan plan, JobConf jobConf) { |
| super(plan, new DependencyOrderWalker<SparkOperator, SparkOperPlan>(plan)); |
| this.jobConf = jobConf; |
| } |
| |
| @Override |
| public void visitSparkOp(SparkOperator sparkOp) throws VisitorException { |
| if (sparkOp instanceof NativeSparkOperator) { |
| return; |
| } |
| |
| if (sparkOp.getCrossKeys() != null) { |
| for (String key : sparkOp.getCrossKeys()) { |
| jobConf.set(PigImplConstants.PIG_CROSS_PARALLELISM + "." + key, |
| // TODO: Estimate parallelism. For now we are hard-coding GFCross.DEFAULT_PARALLELISM |
| Integer.toString(96)); |
| } |
| } |
| } |
| } |