/**
* 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.DataInputBuffer;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.io.WritableUtils;
import org.apache.hadoop.io.WritableComparator;
import org.apache.hadoop.tools.rumen.ResourceUsageMetrics;
class GridmixKey extends GridmixRecord {
static final byte REDUCE_SPEC = 0;
static final byte DATA = 1;
static final int META_BYTES = 1;
private byte type;
private int partition; // NOT serialized
private Spec spec = new Spec();
GridmixKey() {
this(DATA, 1, 0L);
}
GridmixKey(byte type, int size, long seed) {
super(size, seed);
this.type = type;
// setting type may change pcnt random bytes
setSize(size);
}
@Override
public int getSize() {
switch (type) {
case REDUCE_SPEC:
return super.getSize() + spec.getSize() + META_BYTES;
case DATA:
return super.getSize() + META_BYTES;
default:
throw new IllegalStateException("Invalid type: " + type);
}
}
@Override
public void setSize(int size) {
switch (type) {
case REDUCE_SPEC:
super.setSize(size - (META_BYTES + spec.getSize()));
break;
case DATA:
super.setSize(size - META_BYTES);
break;
default:
throw new IllegalStateException("Invalid type: " + type);
}
}
/**
* Partition is not serialized.
*/
public int getPartition() {
return partition;
}
public void setPartition(int partition) {
this.partition = partition;
}
public long getReduceInputRecords() {
assert REDUCE_SPEC == getType();
return spec.rec_in;
}
public void setReduceInputRecords(long rec_in) {
assert REDUCE_SPEC == getType();
final int origSize = getSize();
spec.rec_in = rec_in;
setSize(origSize);
}
public long getReduceOutputRecords() {
assert REDUCE_SPEC == getType();
return spec.rec_out;
}
public void setReduceOutputRecords(long rec_out) {
assert REDUCE_SPEC == getType();
final int origSize = getSize();
spec.rec_out = rec_out;
setSize(origSize);
}
public long getReduceOutputBytes() {
assert REDUCE_SPEC == getType();
return spec.bytes_out;
};
public void setReduceOutputBytes(long b_out) {
assert REDUCE_SPEC == getType();
final int origSize = getSize();
spec.bytes_out = b_out;
setSize(origSize);
}
/**
* Get the {@link ResourceUsageMetrics} stored in the key.
*/
public ResourceUsageMetrics getReduceResourceUsageMetrics() {
assert REDUCE_SPEC == getType();
return spec.metrics;
}
/**
* Store the {@link ResourceUsageMetrics} in the key.
*/
public void setReduceResourceUsageMetrics(ResourceUsageMetrics metrics) {
assert REDUCE_SPEC == getType();
spec.setResourceUsageSpecification(metrics);
}
public byte getType() {
return type;
}
public void setType(byte type) throws IOException {
final int origSize = getSize();
switch (type) {
case REDUCE_SPEC:
case DATA:
this.type = type;
break;
default:
throw new IOException("Invalid type: " + type);
}
setSize(origSize);
}
public void setSpec(Spec spec) {
assert REDUCE_SPEC == getType();
final int origSize = getSize();
this.spec.set(spec);
setSize(origSize);
}
@Override
public void readFields(DataInput in) throws IOException {
super.readFields(in);
setType(in.readByte());
if (REDUCE_SPEC == getType()) {
spec.readFields(in);
}
}
@Override
public void write(DataOutput out) throws IOException {
super.write(out);
final byte t = getType();
out.writeByte(t);
if (REDUCE_SPEC == t) {
spec.write(out);
}
}
int fixedBytes() {
return super.fixedBytes() +
(REDUCE_SPEC == getType() ? spec.getSize() : 0) + META_BYTES;
}
@Override
public int compareTo(GridmixRecord other) {
final GridmixKey o = (GridmixKey) other;
final byte t1 = getType();
final byte t2 = o.getType();
if (t1 != t2) {
return t1 - t2;
}
return super.compareTo(other);
}
/**
* Note that while the spec is not explicitly included, changing the spec
* may change its size, which will affect equality.
*/
@Override
public boolean equals(Object other) {
if (this == other) {
return true;
}
if (other != null && other.getClass() == getClass()) {
final GridmixKey o = ((GridmixKey)other);
return getType() == o.getType() && super.equals(o);
}
return false;
}
@Override
public int hashCode() {
return super.hashCode() ^ getType();
}
public static class Spec implements Writable {
long rec_in;
long rec_out;
long bytes_out;
private ResourceUsageMetrics metrics = null;
private int sizeOfResourceUsageMetrics = 0;
public Spec() { }
public void set(Spec other) {
rec_in = other.rec_in;
bytes_out = other.bytes_out;
rec_out = other.rec_out;
setResourceUsageSpecification(other.metrics);
}
/**
* Sets the {@link ResourceUsageMetrics} for this {@link Spec}.
*/
public void setResourceUsageSpecification(ResourceUsageMetrics metrics) {
this.metrics = metrics;
if (metrics != null) {
this.sizeOfResourceUsageMetrics = metrics.size();
} else {
this.sizeOfResourceUsageMetrics = 0;
}
}
public int getSize() {
return WritableUtils.getVIntSize(rec_in) +
WritableUtils.getVIntSize(rec_out) +
WritableUtils.getVIntSize(bytes_out) +
WritableUtils.getVIntSize(sizeOfResourceUsageMetrics) +
sizeOfResourceUsageMetrics;
}
@Override
public void readFields(DataInput in) throws IOException {
rec_in = WritableUtils.readVLong(in);
rec_out = WritableUtils.readVLong(in);
bytes_out = WritableUtils.readVLong(in);
sizeOfResourceUsageMetrics = WritableUtils.readVInt(in);
if (sizeOfResourceUsageMetrics > 0) {
metrics = new ResourceUsageMetrics();
metrics.readFields(in);
}
}
@Override
public void write(DataOutput out) throws IOException {
WritableUtils.writeVLong(out, rec_in);
WritableUtils.writeVLong(out, rec_out);
WritableUtils.writeVLong(out, bytes_out);
WritableUtils.writeVInt(out, sizeOfResourceUsageMetrics);
if (sizeOfResourceUsageMetrics > 0) {
metrics.write(out);
}
}
}
public static class Comparator extends GridmixRecord.Comparator {
private final DataInputBuffer di = new DataInputBuffer();
private final byte[] reset = di.getData();
public Comparator() {
super(GridmixKey.class);
}
@Override
public int compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) {
try {
di.reset(b1, s1, l1);
final int x1 = WritableUtils.readVInt(di);
di.reset(b2, s2, l2);
final int x2 = WritableUtils.readVInt(di);
final int ret = (b1[s1 + x1] != b2[s2 + x2])
? b1[s1 + x1] - b2[s2 + x2]
: super.compare(b1, s1, x1, b2, s2, x2);
di.reset(reset, 0, 0);
return ret;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
static {
WritableComparator.define(GridmixKey.class, new Comparator());
}
}
}