org.apache.flink.runtime.persistence.filesystem

Class FileSystemStateStorageHelper<T extends Serializable>

java.lang.Object

org.apache.flink.runtime.persistence.filesystem.FileSystemStateStorageHelper<T>

Type Parameters:

T - The type of the data that can be stored by this storage helper.

All Implemented Interfaces:

RetrievableStateStorageHelper<T>

public class FileSystemStateStorageHelper<T extends Serializable>
extends Object
implements RetrievableStateStorageHelper<T>

RetrievableStateStorageHelper implementation which stores the state in the given filesystem path.

Constructor Summary

Constructors

Constructor and Description
FileSystemStateStorageHelper(org.apache.flink.core.fs.Path rootPath, String prefix)

Method Summary

Modifier and Type	Method and Description
RetrievableStateHandle<T>	store(T state) Stores the given state and returns a state handle to it.

Methods inherited from class java.lang.Object

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

Constructor Detail

FileSystemStateStorageHelper

public FileSystemStateStorageHelper(org.apache.flink.core.fs.Path rootPath,
                                    String prefix)
                             throws IOException

Throws:

IOException

Method Detail

store

public RetrievableStateHandle<T> store(T state)
                                throws Exception

Description copied from interface: RetrievableStateStorageHelper

Stores the given state and returns a state handle to it.

Specified by:

store in interface RetrievableStateStorageHelper<T extends Serializable>

Parameters:

state - State to be stored

Returns:

State handle to the stored state

Throws:

Exception - if an error occurred while storing the state.