org.apache.flink.runtime.checkpoint.metadata

类 MetadataV2Serializer

java.lang.Object

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

org.apache.flink.runtime.checkpoint.metadata.MetadataV2Serializer

所有已实现的接口:

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

@Internal
public class MetadataV2Serializer
extends MetadataV2V3SerializerBase
implements MetadataSerializer

(De)serializer for checkpoint metadata format version 2. This format was introduced with Apache Flink 1.3.0.

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 MetadataV2Serializer	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.
protected OperatorState	deserializeOperatorState(DataInputStream dis, MetadataV2V3SerializerBase.DeserializationContext context)
protected OperatorSubtaskState	deserializeSubtaskState(DataInputStream dis, MetadataV2V3SerializerBase.DeserializationContext context)
int	getVersion()
protected void	serializeOperatorState(OperatorState operatorState, DataOutputStream dos)
protected void	serializeSubtaskState(OperatorSubtaskState subtaskState, DataOutputStream dos)

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

deserializeInputChannelStateHandle, deserializeMasterState, deserializeMetadata, deserializeResultSubpartitionStateHandle, serializeInputChannelStateHandle, serializeMasterState, serializeMetadata, serializeResultSubpartitionStateHandle

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 MetadataV2Serializer 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

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

deserializeOperatorState

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

指定者:

deserializeOperatorState 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

deserializeSubtaskState

protected OperatorSubtaskState deserializeSubtaskState(DataInputStream dis,
                                                       @Nullable
                                                       MetadataV2V3SerializerBase.DeserializationContext context)
                                                throws IOException

覆盖:

deserializeSubtaskState 在类中 MetadataV2V3SerializerBase

抛出:

IOException