lanyuanxiaoyao/hudi
1
0
Fork 0
Code Activity

migrating kryo's dependency from twitter chill to plain kryo library

Browse Source
This commit is contained in:
Omkar Joshi
2019-04-30 19:00:30 -07:00
committed by n3nash
parent a33a55fcb5
commit 738635306b
10 changed files with 253 additions and 122 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
hoodie-common/src/main/java/com/uber/hoodie/common/table/log/block/HoodieDeleteBlock.java
View File

@@ -85,7 +85,7 @@ public class HoodieDeleteBlock extends HoodieLogBlock {
int dataLength = dis.readInt();
byte[] data = new byte[dataLength];
dis.readFully(data);
this.keysToDelete = SerializationUtils.deserialize(data);
this.keysToDelete = SerializationUtils.<HoodieKey[]>deserialize(data);
deflate();
}
return keysToDelete;

226
hoodie-common/src/main/java/com/uber/hoodie/common/util/SerializationUtils.java
View File

@@ -16,145 +16,55 @@
package com.uber.hoodie.common.util;
import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.Serializer;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;
import com.esotericsoftware.kryo.serializers.FieldSerializer;
import com.esotericsoftware.reflectasm.ConstructorAccess;
import com.uber.hoodie.exception.HoodieSerializationException;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import org.objenesis.instantiator.ObjectInstantiator;
/**
* (NOTE: Adapted from Apache commons-lang3)
* This class defines API's to serde an object.
* {@link SerializationUtils} class internally uses {@link Kryo} serializer for serializing /
* deserializing objects.
*/
public class SerializationUtils {
// Caching kryo serializer to avoid creating kryo instance for every serde operation
private static final ThreadLocal<KryoSerializerInstance> serializerRef =
ThreadLocal.withInitial(() -> new KryoSerializerInstance());
// Serialize
//-----------------------------------------------------------------------
/**
* <p>Serializes an {@code Object} to the specified stream.</p>
*
* <p>The stream will be closed once the object is written.
* This avoids the need for a finally clause, and maybe also exception
* handling, in the application code.</p>
*
* <p>The stream passed in is not buffered internally within this method.
* This is the responsibility of your application if desired.</p>
*
* @param obj the object to serialize to bytes, may be null
* @param outputStream the stream to write to, must not be null
* @throws IllegalArgumentException if {@code outputStream} is {@code null}
* @throws HoodieSerializationException (runtime) if the serialization fails
*/
public static void serialize(final Serializable obj, final OutputStream outputStream) {
if (outputStream == null) {
throw new IllegalArgumentException("The OutputStream must not be null");
}
ObjectOutputStream out = null;
try {
// stream closed in the finally
out = new ObjectOutputStream(outputStream);
out.writeObject(obj);
} catch (final IOException ex) {
throw new HoodieSerializationException("unable to serialize object", ex);
} finally {
try {
if (out != null) {
out.close();
}
} catch (final IOException ex) { // NOPMD
// ignore close exception
}
}
}
/**
* <p>Serializes an {@code Object} to a byte array for
* storage/serialization.</p>
* <p>Serializes an {@code Object} to a byte array for storage/serialization.</p>
*
* @param obj the object to serialize to bytes
* @return a byte[] with the converted Serializable
* @throws HoodieSerializationException (runtime) if the serialization fails
* @throws IOException if the serialization fails
*/
public static byte[] serialize(final Serializable obj) {
final ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
serialize(obj, baos);
return baos.toByteArray();
public static byte[] serialize(final Object obj) throws IOException {
return serializerRef.get().serialize(obj);
}
// Deserialize
//-----------------------------------------------------------------------
/**
* <p>
* Deserializes an {@code Object} from the specified stream.
* </p>
* <p> Deserializes a single {@code Object} from an array of bytes. </p>
*
* <p>
* The stream will be closed once the object is written. This avoids the need for a finally clause, and maybe also
* exception handling, in the application code.
* </p>
*
* <p>
* The stream passed in is not buffered internally within this method. This is the responsibility of your
* application if desired.
* </p>
*
* <p>
* If the call site incorrectly types the return value, a {@link ClassCastException} is thrown from the call site.
* Without Generics in this declaration, the call site must type cast and can cause the same ClassCastException.
* Note that in both cases, the ClassCastException is in the call site, not in this method.
* </p>
*
* @param <T> the object type to be deserialized
* @param inputStream the serialized object input stream, must not be null
* @return the deserialized object
* @throws IllegalArgumentException if {@code inputStream} is {@code null}
* @throws HoodieSerializationException (runtime) if the serialization fails
*/
public static <T> T deserialize(final InputStream inputStream) {
if (inputStream == null) {
throw new IllegalArgumentException("The InputStream must not be null");
}
ObjectInputStream in = null;
try {
// stream closed in the finally
in = new ObjectInputStream(inputStream);
@SuppressWarnings("unchecked") // may fail with CCE if serialised form is incorrect
final T obj = (T) in.readObject();
return obj;
} catch (final ClassCastException ex) {
throw new HoodieSerializationException("cannot cast class", ex);
} catch (final ClassNotFoundException ex) {
throw new HoodieSerializationException("class not found", ex);
} catch (final IOException ex) {
throw new HoodieSerializationException("unable to deserialize to object", ex);
} finally {
try {
if (in != null) {
in.close();
}
} catch (final IOException ex) { // NOPMD
// ignore close exception
}
}
}
/**
* <p>
* Deserializes a single {@code Object} from an array of bytes.
* </p>
*
* <p>
* If the call site incorrectly types the return value, a {@link ClassCastException} is thrown from the call site.
* Without Generics in this declaration, the call site must type cast and can cause the same ClassCastException.
* Note that in both cases, the ClassCastException is in the call site, not in this method.
* </p>
* <p> If the call site incorrectly types the return value, a {@link ClassCastException} is thrown
* from the call site. Without Generics in this declaration, the call site must type cast and can
* cause the same ClassCastException. Note that in both cases, the ClassCastException is in the
* call site, not in this method. </p>
*
* @param <T> the object type to be deserialized
* @param objectData the serialized object, must not be null
@@ -166,6 +76,88 @@ public class SerializationUtils {
if (objectData == null) {
throw new IllegalArgumentException("The byte[] must not be null");
}
return deserialize(new ByteArrayInputStream(objectData));
return (T) serializerRef.get().deserialize(objectData);
}
private static class KryoSerializerInstance implements Serializable {
public static final int KRYO_SERIALIZER_INITIAL_BUFFER_SIZE = 1048576;
private final Kryo kryo;
// Caching ByteArrayOutputStream to avoid recreating it for every operation
private final ByteArrayOutputStream baos;
KryoSerializerInstance() {
KryoInstantiator kryoInstantiator = new KryoInstantiator();
kryo = kryoInstantiator.newKryo();
baos = new ByteArrayOutputStream(KRYO_SERIALIZER_INITIAL_BUFFER_SIZE);
kryo.setRegistrationRequired(false);
}
byte[] serialize(Object obj) throws IOException {
kryo.reset();
baos.reset();
Output output = new Output(baos);
this.kryo.writeClassAndObject(output, obj);
output.close();
return baos.toByteArray();
}
Object deserialize(byte[] objectData) {
return this.kryo.readClassAndObject(new Input(objectData));
}
}
/**
* This class has a no-arg constructor, suitable for use with reflection instantiation.
* For Details checkout com.twitter.chill.KryoBase.
*/
private static class KryoInstantiator implements Serializable {
public Kryo newKryo() {
Kryo kryo = new KryoBase();
// ensure that kryo doesn't fail if classes are not registered with kryo.
kryo.setRegistrationRequired(false);
// This would be used for object initialization if nothing else works out.
kryo.setInstantiatorStrategy(new org.objenesis.strategy.StdInstantiatorStrategy());
// Handle cases where we may have an odd classloader setup like with libjars
// for hadoop
kryo.setClassLoader(Thread.currentThread().getContextClassLoader());
return kryo;
}
private static class KryoBase extends Kryo {
@Override
protected Serializer newDefaultSerializer(Class type) {
final Serializer serializer = super.newDefaultSerializer(type);
if (serializer instanceof FieldSerializer) {
final FieldSerializer fieldSerializer = (FieldSerializer) serializer;
fieldSerializer.setIgnoreSyntheticFields(true);
}
return serializer;
}
@Override
protected ObjectInstantiator newInstantiator(Class type) {
return () -> {
// First try reflectasm - it is fastest way to instantiate an object.
try {
final ConstructorAccess access = ConstructorAccess.get(type);
return access.newInstance();
} catch (Throwable t) {
// ignore this exception. We may want to try other way.
}
// fall back to java based instantiation.
try {
final Constructor constructor = type.getConstructor();
constructor.setAccessible(true);
return constructor.newInstance();
} catch (NoSuchMethodException | IllegalAccessException
| InstantiationException | InvocationTargetException e) {
// ignore this exception. we will fall back to default instantiation strategy.
}
return super.getInstantiatorStrategy().newInstantiatorOf(type).newInstance();
};
}
}
}
}

4
hoodie-common/src/main/java/com/uber/hoodie/common/util/collection/DiskBasedMap.java
View File

@@ -156,8 +156,8 @@ public final class DiskBasedMap<T extends Serializable, R extends Serializable>
return null;
}
try {
return SerializationUtils.deserialize(SpillableMapUtils.readBytesFromDisk(readOnlyFileHandle,
entry.getOffsetOfValue(), entry.getSizeOfValue()));
return SerializationUtils.<R>deserialize(SpillableMapUtils
.readBytesFromDisk(readOnlyFileHandle, entry.getOffsetOfValue(), entry.getSizeOfValue()));
} catch (IOException e) {
throw new HoodieIOException("Unable to readFromDisk Hoodie Record from disk", e);
}

5
hoodie-common/src/main/java/com/uber/hoodie/common/util/collection/LazyFileIterable.java
View File

@@ -81,8 +81,9 @@ public class LazyFileIterable<T, R> implements Iterable<R> {
public R next() {
Map.Entry<T, DiskBasedMap.ValueMetadata> entry = this.metadataIterator.next();
try {
return SerializationUtils.deserialize(SpillableMapUtils.readBytesFromDisk(readOnlyFileHandle,
entry.getValue().getOffsetOfValue(), entry.getValue().getSizeOfValue()));
return SerializationUtils.<R>deserialize(SpillableMapUtils
.readBytesFromDisk(readOnlyFileHandle, entry.getValue().getOffsetOfValue(),
entry.getValue().getSizeOfValue()));
} catch (IOException e) {
throw new HoodieIOException("Unable to read hoodie record from value spilled to disk", e);
}