org.apache.flink.runtime.state.filesystem

Class FileStreamStateHandle

java.lang.Object

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

org.apache.flink.runtime.state.filesystem.FileStreamStateHandle

All Implemented Interfaces:

Serializable, StateHandle<InputStream>, StreamStateHandle

public class FileStreamStateHandle
extends AbstractFileState
implements StreamStateHandle

A state handle that points to state in a file system, accessible as an input stream.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
FileStreamStateHandle(org.apache.flink.core.fs.Path filePath) Creates a new FileStreamStateHandle pointing to state at the given file path.

Method Summary

Modifier and Type	Method and Description
InputStream	getState(ClassLoader userCodeClassLoader) 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

FileStreamStateHandle

public FileStreamStateHandle(org.apache.flink.core.fs.Path filePath)

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

Parameters:

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

Method Detail

getState

public InputStream getState(ClassLoader userCodeClassLoader)
                     throws Exception

Description copied from interface: StateHandle

This retrieves and return the state represented by the handle.

Specified by:

getState in interface StateHandle<InputStream>

Parameters:

userCodeClassLoader - Class loader for deserializing user code specific classes

Returns:

The state represented by the handle.

Throws:

Exception - Thrown, if the state cannot be fetched.