org.apache.flink.runtime.state.memory

类 MemCheckpointStreamFactory

java.lang.Object

org.apache.flink.runtime.state.memory.MemCheckpointStreamFactory

所有已实现的接口:

CheckpointStreamFactory

直接已知子类:

NonPersistentMetadataCheckpointStorageLocation, PersistentMetadataCheckpointStorageLocation

public class MemCheckpointStreamFactory
extends Object
implements CheckpointStreamFactory

CheckpointStreamFactory that produces streams that write to in-memory byte arrays.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	MemCheckpointStreamFactory.MemoryCheckpointOutputStream A CheckpointStateOutputStream that writes into a byte array.

从接口继承的嵌套类/接口 org.apache.flink.runtime.state.CheckpointStreamFactory

CheckpointStreamFactory.CheckpointStateOutputStream

构造器概要

构造器

构造器和说明
MemCheckpointStreamFactory(int maxStateSize) Creates a new in-memory stream factory that accepts states whose serialized forms are up to the given number of bytes.

方法概要

限定符和类型	方法和说明
CheckpointStreamFactory.CheckpointStateOutputStream	createCheckpointStateOutputStream(CheckpointedStateScope scope) Creates an new CheckpointStreamFactory.CheckpointStateOutputStream.
String	toString()

从类继承的方法 java.lang.Object

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

构造器详细资料

MemCheckpointStreamFactory

public MemCheckpointStreamFactory(int maxStateSize)

Creates a new in-memory stream factory that accepts states whose serialized forms are up to the given number of bytes.

参数:

maxStateSize - The maximal size of the serialized state

方法详细资料

createCheckpointStateOutputStream

public CheckpointStreamFactory.CheckpointStateOutputStream createCheckpointStateOutputStream(CheckpointedStateScope scope)
                                                                                      throws IOException

从接口复制的说明: CheckpointStreamFactory

Creates an new CheckpointStreamFactory.CheckpointStateOutputStream. When the stream is closed, it returns a state handle that can retrieve the state back.

指定者:

createCheckpointStateOutputStream 在接口中 CheckpointStreamFactory

参数:

scope - The state's scope, whether it is exclusive or shared.

返回:

An output stream that writes state for the given checkpoint.

抛出:

IOException - Exceptions may occur while creating the stream and should be forwarded.

toString

public String toString()

覆盖:

toString 在类中 Object