org.apache.flink.runtime.checkpoint.metadata

类 MetadataV3Serializer

java.lang.Object

org.apache.flink.runtime.checkpoint.metadata.MetadataV2V3SerializerBase

org.apache.flink.runtime.checkpoint.metadata.MetadataV3Serializer

所有已实现的接口:

org.apache.flink.core.io.Versioned, MetadataSerializer

@Internal
public class MetadataV3Serializer
extends MetadataV2V3SerializerBase
implements MetadataSerializer

(De)serializer for checkpoint metadata format version 3. This format was introduced with Apache Flink 1.11.0.

Compared to format version 2, this drops some unused fields and introduces operator coordinator state.

See MetadataV2V3SerializerBase for a description of the format layout.

嵌套类概要

从类继承的嵌套类/接口 org.apache.flink.runtime.checkpoint.metadata.MetadataV2V3SerializerBase

MetadataV2V3SerializerBase.DeserializationContext

字段概要

字段

限定符和类型	字段和说明
static MetadataV3Serializer	INSTANCE The singleton instance of the serializer.
static int	VERSION The metadata format version.

方法概要

限定符和类型	方法和说明
CheckpointMetadata	deserialize(DataInputStream dis, ClassLoader classLoader, String externalPointer) Deserializes a savepoint from an input stream.
static StateObjectCollection<InputChannelStateHandle>	deserializeInputChannelStateHandle(DataInputStream dis)
StateObjectCollection<InputChannelStateHandle>	deserializeInputChannelStateHandle(DataInputStream dis, MetadataV2V3SerializerBase.DeserializationContext context)
static KeyedStateHandle	deserializeKeyedStateHandleUtil(DataInputStream dis)
protected OperatorState	deserializeOperatorState(DataInputStream dis, MetadataV2V3SerializerBase.DeserializationContext context)
static OperatorStateHandle	deserializeOperatorStateHandleUtil(DataInputStream dis)
StateObjectCollection<ResultSubpartitionStateHandle>	deserializeResultSubpartitionStateHandle(DataInputStream dis)
StateObjectCollection<ResultSubpartitionStateHandle>	deserializeResultSubpartitionStateHandle(DataInputStream dis, MetadataV2V3SerializerBase.DeserializationContext context)
static StreamStateHandle	deserializeStreamStateHandle(DataInputStream dis)
int	getVersion()
static void	serialize(CheckpointMetadata checkpointMetadata, DataOutputStream dos)
void	serializeInputChannelStateHandle(InputChannelStateHandle handle, DataOutputStream dos)
static void	serializeKeyedStateHandleUtil(KeyedStateHandle stateHandle, DataOutputStream dos)
protected void	serializeOperatorState(OperatorState operatorState, DataOutputStream dos)
static void	serializeOperatorStateHandleUtil(OperatorStateHandle stateHandle, DataOutputStream dos)
void	serializeResultSubpartitionStateHandle(ResultSubpartitionStateHandle handle, DataOutputStream dos)
static void	serializeStreamStateHandle(StreamStateHandle stateHandle, DataOutputStream dos)
protected void	serializeSubtaskState(OperatorSubtaskState subtaskState, DataOutputStream dos)

从类继承的方法 org.apache.flink.runtime.checkpoint.metadata.MetadataV2V3SerializerBase

deserializeMasterState, deserializeMetadata, deserializeSubtaskState, serializeMasterState, serializeMetadata

从类继承的方法 java.lang.Object

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

字段详细资料

VERSION

public static final int VERSION

The metadata format version.

另请参阅:

常量字段值

INSTANCE

public static final MetadataV3Serializer INSTANCE

The singleton instance of the serializer.

方法详细资料

getVersion

public int getVersion()

指定者:

getVersion 在接口中 org.apache.flink.core.io.Versioned

serialize

public static void serialize(CheckpointMetadata checkpointMetadata,
                             DataOutputStream dos)
                      throws IOException

抛出:

IOException

deserialize

public CheckpointMetadata deserialize(DataInputStream dis,
                                      ClassLoader classLoader,
                                      String externalPointer)
                               throws IOException

从接口复制的说明: MetadataSerializer

Deserializes a savepoint from an input stream.

指定者:

deserialize 在接口中 MetadataSerializer

参数:

dis - Input stream to deserialize savepoint from

classLoader - the user code class loader

externalPointer - the external pointer of the given checkpoint

返回:

The deserialized savepoint

抛出:

IOException - Serialization failures are forwarded

serializeOperatorState

protected void serializeOperatorState(OperatorState operatorState,
                                      DataOutputStream dos)
                               throws IOException

指定者:

serializeOperatorState 在类中 MetadataV2V3SerializerBase

抛出:

IOException

serializeSubtaskState

protected void serializeSubtaskState(OperatorSubtaskState subtaskState,
                                     DataOutputStream dos)
                              throws IOException

覆盖:

serializeSubtaskState 在类中 MetadataV2V3SerializerBase

抛出:

IOException

deserializeOperatorState

protected OperatorState deserializeOperatorState(DataInputStream dis,
                                                 @Nullable
                                                 MetadataV2V3SerializerBase.DeserializationContext context)
                                          throws IOException

指定者:

deserializeOperatorState 在类中 MetadataV2V3SerializerBase

抛出:

IOException

serializeResultSubpartitionStateHandle

@VisibleForTesting
public void serializeResultSubpartitionStateHandle(ResultSubpartitionStateHandle handle,
                                                                      DataOutputStream dos)
                                                               throws IOException

覆盖:

serializeResultSubpartitionStateHandle 在类中 MetadataV2V3SerializerBase

抛出:

IOException

deserializeResultSubpartitionStateHandle

@VisibleForTesting
public StateObjectCollection<ResultSubpartitionStateHandle> deserializeResultSubpartitionStateHandle(DataInputStream dis,
                                                                                                                        @Nullable
                                                                                                                        MetadataV2V3SerializerBase.DeserializationContext context)
                                                                                                                 throws IOException

覆盖:

deserializeResultSubpartitionStateHandle 在类中 MetadataV2V3SerializerBase

抛出:

IOException

serializeInputChannelStateHandle

@VisibleForTesting
public void serializeInputChannelStateHandle(InputChannelStateHandle handle,
                                                                DataOutputStream dos)
                                                         throws IOException

覆盖:

serializeInputChannelStateHandle 在类中 MetadataV2V3SerializerBase

抛出:

IOException

deserializeInputChannelStateHandle

@VisibleForTesting
public StateObjectCollection<InputChannelStateHandle> deserializeInputChannelStateHandle(DataInputStream dis,
                                                                                                            @Nullable
                                                                                                            MetadataV2V3SerializerBase.DeserializationContext context)
                                                                                                     throws IOException

覆盖:

deserializeInputChannelStateHandle 在类中 MetadataV2V3SerializerBase

抛出:

IOException

serializeStreamStateHandle

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

抛出:

IOException

deserializeStreamStateHandle

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

抛出:

IOException

serializeOperatorStateHandleUtil

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

抛出:

IOException

deserializeOperatorStateHandleUtil

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

抛出:

IOException

serializeKeyedStateHandleUtil

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

抛出:

IOException

deserializeKeyedStateHandleUtil

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

抛出:

IOException

deserializeInputChannelStateHandle

@VisibleForTesting
public static StateObjectCollection<InputChannelStateHandle> deserializeInputChannelStateHandle(DataInputStream dis)
                                                                                                            throws IOException

抛出:

IOException

deserializeResultSubpartitionStateHandle

@VisibleForTesting
public StateObjectCollection<ResultSubpartitionStateHandle> deserializeResultSubpartitionStateHandle(DataInputStream dis)
                                                                                                                 throws IOException

抛出:

IOException