org.apache.hadoop.mapred.gridmix.GridmixSplit Maven / Gradle / Ivy
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* 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.hadoop.mapred.gridmix;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.hadoop.io.WritableUtils;
import org.apache.hadoop.mapreduce.lib.input.CombineFileSplit;
class GridmixSplit extends CombineFileSplit {
private int id;
private int nSpec;
private int maps;
private int reduces;
private long inputRecords;
private long outputBytes;
private long outputRecords;
private long maxMemory;
private double[] reduceBytes = new double[0];
private double[] reduceRecords = new double[0];
// Spec for reduces id mod this
private long[] reduceOutputBytes = new long[0];
private long[] reduceOutputRecords = new long[0];
GridmixSplit() {
super();
}
public GridmixSplit(CombineFileSplit cfsplit, int maps, int id,
long inputBytes, long inputRecords, long outputBytes,
long outputRecords, double[] reduceBytes, double[] reduceRecords,
long[] reduceOutputBytes, long[] reduceOutputRecords)
throws IOException {
super(cfsplit);
this.id = id;
this.maps = maps;
reduces = reduceBytes.length;
this.inputRecords = inputRecords;
this.outputBytes = outputBytes;
this.outputRecords = outputRecords;
this.reduceBytes = reduceBytes;
this.reduceRecords = reduceRecords;
nSpec = reduceOutputBytes.length;
this.reduceOutputBytes = reduceOutputBytes;
this.reduceOutputRecords = reduceOutputRecords;
}
public int getId() {
return id;
}
public int getMapCount() {
return maps;
}
public long getInputRecords() {
return inputRecords;
}
public long[] getOutputBytes() {
if (0 == reduces) {
return new long[] { outputBytes };
}
final long[] ret = new long[reduces];
for (int i = 0; i < reduces; ++i) {
ret[i] = Math.round(outputBytes * reduceBytes[i]);
}
return ret;
}
public long[] getOutputRecords() {
if (0 == reduces) {
return new long[] { outputRecords };
}
final long[] ret = new long[reduces];
for (int i = 0; i < reduces; ++i) {
ret[i] = Math.round(outputRecords * reduceRecords[i]);
}
return ret;
}
public long getReduceBytes(int i) {
return reduceOutputBytes[i];
}
public long getReduceRecords(int i) {
return reduceOutputRecords[i];
}
@Override
public void write(DataOutput out) throws IOException {
super.write(out);
WritableUtils.writeVInt(out, id);
WritableUtils.writeVInt(out, maps);
WritableUtils.writeVLong(out, inputRecords);
WritableUtils.writeVLong(out, outputBytes);
WritableUtils.writeVLong(out, outputRecords);
WritableUtils.writeVLong(out, maxMemory);
WritableUtils.writeVInt(out, reduces);
for (int i = 0; i < reduces; ++i) {
out.writeDouble(reduceBytes[i]);
out.writeDouble(reduceRecords[i]);
}
WritableUtils.writeVInt(out, nSpec);
for (int i = 0; i < nSpec; ++i) {
WritableUtils.writeVLong(out, reduceOutputBytes[i]);
WritableUtils.writeVLong(out, reduceOutputRecords[i]);
}
}
@Override
public void readFields(DataInput in) throws IOException {
super.readFields(in);
id = WritableUtils.readVInt(in);
maps = WritableUtils.readVInt(in);
inputRecords = WritableUtils.readVLong(in);
outputBytes = WritableUtils.readVLong(in);
outputRecords = WritableUtils.readVLong(in);
maxMemory = WritableUtils.readVLong(in);
reduces = WritableUtils.readVInt(in);
if (reduceBytes.length < reduces) {
reduceBytes = new double[reduces];
reduceRecords = new double[reduces];
}
for (int i = 0; i < reduces; ++i) {
reduceBytes[i] = in.readDouble();
reduceRecords[i] = in.readDouble();
}
nSpec = WritableUtils.readVInt(in);
if (reduceOutputBytes.length < nSpec) {
reduceOutputBytes = new long[nSpec];
reduceOutputRecords = new long[nSpec];
}
for (int i = 0; i < nSpec; ++i) {
reduceOutputBytes[i] = WritableUtils.readVLong(in);
reduceOutputRecords[i] = WritableUtils.readVLong(in);
}
}
}