/**
* 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.crunch.impl.spark.collect;
import org.apache.crunch.ParallelDoOptions;
import org.apache.crunch.Source;
import org.apache.crunch.impl.dist.DistributedPipeline;
import org.apache.crunch.impl.dist.collect.BaseInputCollection;
import org.apache.crunch.impl.mr.run.CrunchInputFormat;
import org.apache.crunch.impl.spark.SparkCollection;
import org.apache.crunch.impl.spark.SparkRuntime;
import org.apache.crunch.impl.spark.fn.InputConverterFunction;
import org.apache.crunch.impl.spark.fn.MapFunction;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.spark.api.java.JavaPairRDD;
import org.apache.spark.api.java.JavaRDDLike;
import java.io.IOException;
public class InputCollection<S> extends BaseInputCollection<S> implements SparkCollection {
InputCollection(Source<S> source, DistributedPipeline pipeline, ParallelDoOptions doOpts) {
super(source, pipeline, doOpts);
}
public JavaRDDLike<?, ?> getJavaRDDLike(SparkRuntime runtime) {
try {
Job job = new Job(runtime.getConfiguration());
FileInputFormat.addInputPaths(job, "/tmp"); //placeholder
source.configureSource(job, -1);
JavaPairRDD<?, ?> input = runtime.getSparkContext().newAPIHadoopRDD(
job.getConfiguration(),
CrunchInputFormat.class,
source.getConverter().getKeyClass(),
source.getConverter().getValueClass());
input.rdd().setName(source.toString());
return input
.map(new InputConverterFunction(source.getConverter()))
.map(new MapFunction(source.getType().getInputMapFn(), runtime.getRuntimeContext()));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}