org.apache.flink.runtime.checkpoint.savepoint

Class SavepointV1Serializer

java.lang.Object

org.apache.flink.runtime.checkpoint.savepoint.SavepointV1Serializer

All Implemented Interfaces:

SavepointSerializer<SavepointV2>

@Internal
public class SavepointV1Serializer
extends Object
implements SavepointSerializer<SavepointV2>

Deserializer for checkpoints written in format 1 (Flink 1.2.x format)

In contrast to the previous versions, this serializer makes sure that no Java serialization is used for serialization. Therefore, we don't rely on any involved classes to stay the same.

Field Summary

Fields

Modifier and Type	Field and Description
static SavepointV1Serializer	INSTANCE

Method Summary

Methods

Modifier and Type	Method and Description
SavepointV2	deserialize(DataInputStream dis, ClassLoader cl) Deserializes a savepoint from an input stream.
static KeyedStateHandle	deserializeKeyedStateHandle(DataInputStream dis)
static OperatorStateHandle	deserializeOperatorStateHandle(DataInputStream dis)
static StreamStateHandle	deserializeStreamStateHandle(DataInputStream dis)
void	serialize(SavepointV2 savepoint, DataOutputStream dos) Serializes a savepoint to an output stream.
static void	serializeKeyedStateHandle(KeyedStateHandle stateHandle, DataOutputStream dos)
void	serializeOld(SavepointV1 savepoint, DataOutputStream dos)
static void	serializeOperatorStateHandle(OperatorStateHandle stateHandle, DataOutputStream dos)
static void	serializeStreamStateHandle(StreamStateHandle stateHandle, DataOutputStream dos)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INSTANCE

public static final SavepointV1Serializer INSTANCE

Method Detail

serialize

public void serialize(SavepointV2 savepoint,
             DataOutputStream dos)
               throws IOException

Description copied from interface: SavepointSerializer

Serializes a savepoint to an output stream.

Specified by:

serialize in interface SavepointSerializer<SavepointV2>

Parameters:

savepoint - Savepoint to serialize

dos - Output stream to serialize the savepoint to

Throws:

IOException - Serialization failures are forwarded

deserialize

public SavepointV2 deserialize(DataInputStream dis,
                      ClassLoader cl)
                        throws IOException

Description copied from interface: SavepointSerializer

Deserializes a savepoint from an input stream.

Specified by:

deserialize in interface SavepointSerializer<SavepointV2>

Parameters:

dis - Input stream to deserialize savepoint from

cl - the user code class loader

Returns:

The deserialized savepoint

Throws:

IOException - Serialization failures are forwarded

serializeOld

public void serializeOld(SavepointV1 savepoint,
                DataOutputStream dos)
                  throws IOException

Throws:

IOException

serializeKeyedStateHandle

@VisibleForTesting
public static void serializeKeyedStateHandle(KeyedStateHandle stateHandle,
                                               DataOutputStream dos)
                                      throws IOException

Throws:

IOException

deserializeKeyedStateHandle

@VisibleForTesting
public static KeyedStateHandle deserializeKeyedStateHandle(DataInputStream dis)
                                                    throws IOException

Throws:

IOException

serializeOperatorStateHandle

@VisibleForTesting
public static void serializeOperatorStateHandle(OperatorStateHandle stateHandle,
                                                  DataOutputStream dos)
                                         throws IOException

Throws:

IOException

deserializeOperatorStateHandle

@VisibleForTesting
public static OperatorStateHandle deserializeOperatorStateHandle(DataInputStream dis)
                                                          throws IOException

Throws:

IOException

serializeStreamStateHandle

@VisibleForTesting
public static void serializeStreamStateHandle(StreamStateHandle stateHandle,
                                                DataOutputStream dos)
                                       throws IOException

Throws:

IOException

deserializeStreamStateHandle

@VisibleForTesting
public static StreamStateHandle deserializeStreamStateHandle(DataInputStream dis)
                                                      throws IOException

Throws:

IOException