com.dataartisans.flink.cascading.runtime.spilling.SpillingTupleCollectionFactory Maven / Gradle / Ivy
/*
* Copyright 2015 data Artisans GmbH
*
* Licensed 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 com.dataartisans.flink.cascading.runtime.spilling;
import cascading.flow.FlowProcess;
import cascading.tuple.Tuple;
import cascading.tuple.collect.SpillableTupleList;
import cascading.tuple.collect.TupleCollectionFactory;
import cascading.tuple.hadoop.TupleSerialization;
import cascading.tuple.hadoop.collect.HadoopSpillableTupleList;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.compress.CompressionCodec;
import org.apache.hadoop.io.compress.GzipCodec;
import java.util.Collection;
public class SpillingTupleCollectionFactory implements TupleCollectionFactory {
private int spillThreshold;
private CompressionCodec codec;
private TupleSerialization tupleSerialization;
public SpillingTupleCollectionFactory() {
}
public void initialize(FlowProcess flowProcess) {
this.spillThreshold = SpillableTupleList.getThreshold(flowProcess, 10000);
this.codec = new GzipCodec();
this.tupleSerialization = new TupleSerialization(flowProcess);
}
public Collection create(FlowProcess flowProcess) {
return new HadoopSpillableTupleList(this.spillThreshold, this.tupleSerialization, this.codec);
}
}