FileSystemStateStorageHelper (Flink : Runtime 2.1.0 API)

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 Description
  
  FileSystemStateStorageHelper(org.apache.flink.core.fs.Path rootPath, String prefix)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method 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.