org.apache.flink.runtime.state.filemerging

类 DirectoryStreamStateHandle

java.lang.Object

org.apache.flink.runtime.state.filemerging.DirectoryStreamStateHandle

所有已实现的接口:

Serializable, StateObject, StreamStateHandle

public class DirectoryStreamStateHandle
extends Object
implements StreamStateHandle

This state handle represents a directory, usually used to be registered to SharedStateRegistry to track the life cycle of the directory.

另请参阅:

序列化表格

嵌套类概要

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

StateObject.StateObjectLocation, StateObject.StateObjectSizeStatsCollector

构造器概要

构造器

构造器和说明
DirectoryStreamStateHandle(org.apache.flink.core.fs.Path directory)

方法概要

限定符和类型	方法和说明
Optional<byte[]>	asBytesIfInMemory()
SharedStateRegistryKey	createStateRegistryKey()
void	discardState() Discards the state referred to and solemnly owned by this handle, to free up resources in the persistent storage.
boolean	equals(Object o)
org.apache.flink.core.fs.Path	getDirectory()
long	getStateSize() This handle usually used to track the life cycle of the directory, therefore a fake size is provided.
PhysicalStateHandleID	getStreamStateHandleID()
int	hashCode()
static DirectoryStreamStateHandle	of(org.apache.flink.core.fs.Path directory)
org.apache.flink.core.fs.FSDataInputStream	openInputStream() Returns an FSDataInputStream that can be used to read back the data that was previously written to the stream.
String	toString()

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

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

collectSizeStats

构造器详细资料

DirectoryStreamStateHandle

public DirectoryStreamStateHandle(@Nonnull
                                  org.apache.flink.core.fs.Path directory)

方法详细资料

openInputStream

public org.apache.flink.core.fs.FSDataInputStream openInputStream()

从接口复制的说明: StreamStateHandle

Returns an FSDataInputStream that can be used to read back the data that was previously written to the stream.

指定者:

openInputStream 在接口中 StreamStateHandle

asBytesIfInMemory

public Optional<byte[]> asBytesIfInMemory()

指定者:

asBytesIfInMemory 在接口中 StreamStateHandle

返回:

Content of this handle as bytes array if it is already in memory.

getStreamStateHandleID

public PhysicalStateHandleID getStreamStateHandleID()

指定者:

getStreamStateHandleID 在接口中 StreamStateHandle

返回:

a unique identifier of this handle.

createStateRegistryKey

public SharedStateRegistryKey createStateRegistryKey()

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

equals

public boolean equals(Object o)

覆盖:

equals 在类中 Object

toString

public String toString()

覆盖:

toString 在类中 Object

getDirectory

public org.apache.flink.core.fs.Path getDirectory()

discardState

public void discardState()
                  throws Exception

从接口复制的说明: StateObject

Discards the state referred to and solemnly owned by this handle, to free up resources in the persistent storage. This method is called when the state represented by this object will not be used anymore.

指定者:

discardState 在接口中 StateObject

抛出:

Exception

getStateSize

public long getStateSize()

This handle usually used to track the life cycle of the directory, therefore a fake size is provided.

指定者:

getStateSize 在接口中 StateObject

返回:

Size of the state in bytes.

of

public static DirectoryStreamStateHandle of(@Nonnull
                                            org.apache.flink.core.fs.Path directory)