org.apache.flink.runtime.state.memory

类 NonPersistentMetadataCheckpointStorageLocation

java.lang.Object

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

org.apache.flink.runtime.state.memory.NonPersistentMetadataCheckpointStorageLocation

所有已实现的接口:

CheckpointStorageLocation, CheckpointStreamFactory

public class NonPersistentMetadataCheckpointStorageLocation
extends MemCheckpointStreamFactory
implements CheckpointStorageLocation

A checkpoint storage location for the MemoryStateBackend in case no durable persistence for metadata has been configured.

嵌套类概要

从类继承的嵌套类/接口 org.apache.flink.runtime.state.memory.MemCheckpointStreamFactory

MemCheckpointStreamFactory.MemoryCheckpointOutputStream

字段概要

字段

限定符和类型	字段和说明
static String	EXTERNAL_POINTER The external pointer returned for checkpoints that are not externally addressable.

构造器概要

构造器

构造器和说明
NonPersistentMetadataCheckpointStorageLocation(int maxStateSize)

方法概要

限定符和类型	方法和说明
CheckpointMetadataOutputStream	createMetadataOutputStream() Creates the output stream to persist the checkpoint metadata to.
void	disposeOnFailure() Disposes the checkpoint location in case the checkpoint has failed.
CheckpointStorageLocationReference	getLocationReference() Gets a reference to the storage location.

从类继承的方法 org.apache.flink.runtime.state.memory.MemCheckpointStreamFactory

canFastDuplicate, createCheckpointStateOutputStream, duplicate, toString

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.runtime.state.CheckpointStreamFactory

canFastDuplicate, createCheckpointStateOutputStream, duplicate

字段详细资料

EXTERNAL_POINTER

public static final String EXTERNAL_POINTER

The external pointer returned for checkpoints that are not externally addressable.

另请参阅:

常量字段值

构造器详细资料

NonPersistentMetadataCheckpointStorageLocation

public NonPersistentMetadataCheckpointStorageLocation(int maxStateSize)

方法详细资料

createMetadataOutputStream

public CheckpointMetadataOutputStream createMetadataOutputStream()
                                                          throws IOException

从接口复制的说明: CheckpointStorageLocation

Creates the output stream to persist the checkpoint metadata to.

指定者:

createMetadataOutputStream 在接口中 CheckpointStorageLocation

返回:

The output stream to persist the checkpoint metadata to.

抛出:

IOException - Thrown, if the stream cannot be opened due to an I/O error.

disposeOnFailure

public void disposeOnFailure()

从接口复制的说明: CheckpointStorageLocation

Disposes the checkpoint location in case the checkpoint has failed. This method disposes all the data at that location, not just the data written by the particular node or process that calls this method.

指定者:

disposeOnFailure 在接口中 CheckpointStorageLocation

getLocationReference

public CheckpointStorageLocationReference getLocationReference()

从接口复制的说明: CheckpointStorageLocation

Gets a reference to the storage location. This reference is sent to the target storage location via checkpoint RPC messages and checkpoint barriers, in a format avoiding backend-specific classes.

If there is no custom location information that needs to be communicated, this method can simply return CheckpointStorageLocationReference.getDefault().

指定者:

getLocationReference 在接口中 CheckpointStorageLocation