org.apache.flink.runtime.checkpoint.metadata

接口 MetadataSerializer

所有超级接口:

org.apache.flink.core.io.Versioned

所有已知实现类:

MetadataV1Serializer, MetadataV2Serializer, MetadataV3Serializer, MetadataV4Serializer

public interface MetadataSerializer
extends org.apache.flink.core.io.Versioned

Deserializer for checkpoint metadata. Different deserializers exist to deserialize from different format versions.

Version-specific serializers are accessed via the MetadataSerializers helper.

方法概要

限定符和类型	方法和说明
CheckpointMetadata	deserialize(DataInputStream dis, ClassLoader userCodeClassLoader, String externalPointer) Deserializes a savepoint from an input stream.
void	serialize(CheckpointMetadata checkpointMetadata, DataOutputStream dos) Serializes a savepoint or checkpoint metadata to an output stream.

从接口继承的方法 org.apache.flink.core.io.Versioned

getVersion

方法详细资料

deserialize

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

Deserializes a savepoint from an input stream.

参数:

dis - Input stream to deserialize savepoint from

userCodeClassLoader - 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

serialize

void serialize(CheckpointMetadata checkpointMetadata,
               DataOutputStream dos)
        throws IOException

Serializes a savepoint or checkpoint metadata to an output stream.

抛出:

IOException - Serialization failures are forwarded