org.apache.flink.runtime.state.filesystem

Class FileSerializableStateHandle<T>

java.lang.Object

org.apache.flink.runtime.state.filesystem.AbstractFileState

org.apache.flink.runtime.state.filesystem.FileSerializableStateHandle<T>

Type Parameters:

T - The type of state pointed to by the state handle.

All Implemented Interfaces:

Serializable, StateHandle<T>

public class FileSerializableStateHandle<T>
extends AbstractFileState
implements StateHandle<T>

A state handle that points to state stored in a file via Java Serialization.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
FileSerializableStateHandle(Path filePath) Creates a new FileSerializableStateHandle pointing to state at the given file path.

Method Summary

Methods

Modifier and Type	Method and Description
T	getState(ClassLoader classLoader) This retrieves and return the state represented by the handle.

Methods inherited from class org.apache.flink.runtime.state.filesystem.AbstractFileState

discardState, getFilePath, getFileSystem

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.runtime.state.StateHandle

discardState

Constructor Detail

FileSerializableStateHandle

public FileSerializableStateHandle(Path filePath)

Creates a new FileSerializableStateHandle pointing to state at the given file path.

Parameters:

filePath - The path to the file containing the checkpointed state.

Method Detail

getState

public T getState(ClassLoader classLoader)
           throws Exception

Description copied from interface: StateHandle

This retrieves and return the state represented by the handle.

Specified by:

getState in interface StateHandle<T>

Parameters:

classLoader - Class loader for deserializing user code specific classes

Returns:

The state represented by the handle.

Throws:

Exception - Thrown, if the state cannot be fetched.