edu.iu.dsc.tws.api.checkpointing

Interface StateStore

All Known Implementing Classes:

HDFSFileStateStore, LocalFileStateStore

public interface StateStore

Interface for saving state to different stores

Method Summary

Modifier and Type	Method and Description
boolean	contains(java.lang.String key) Check weather the specified key is in the store
byte[]	get(java.lang.String key) Get the bye value of the key
void	init(Config config, java.lang.String... path) Initialize the store
void	put(java.lang.String key, byte[] data) Put a key and data

Method Detail

init

void init(Config config,
          java.lang.String... path)

Initialize the store

Parameters:

config - configuration

path - path

put

void put(java.lang.String key,
         byte[] data)
  throws java.io.IOException

Put a key and data

Parameters:

key - key

data - data

Throws:

java.io.IOException - if an error occurs

get

byte[] get(java.lang.String key)
    throws java.io.IOException

Get the bye value of the key

Parameters:

key - key

Returns:

byte array

Throws:

java.io.IOException - if an error occurs

contains

boolean contains(java.lang.String key)
          throws java.io.IOException

Check weather the specified key is in the store

Parameters:

key - key

Returns:

true if the key in store

Throws:

java.io.IOException - if an error occurs