org.apache.flink.state.api

Class Savepoint

java.lang.Object

org.apache.flink.state.api.Savepoint

@PublicEvolving
public final class Savepoint
extends Object

This class provides entry points for loading an existing savepoint, or a new empty savepoint.

See Also:

ExistingSavepoint, NewSavepoint

Method Summary

Modifier and Type	Method and Description
static NewSavepoint	create(org.apache.flink.runtime.state.StateBackend stateBackend, int maxParallelism) Creates a new savepoint.
static ExistingSavepoint	load(org.apache.flink.api.java.ExecutionEnvironment env, String path, org.apache.flink.runtime.state.StateBackend stateBackend) Loads an existing savepoint.

Methods inherited from class java.lang.Object

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

Method Detail

load

public static ExistingSavepoint load(org.apache.flink.api.java.ExecutionEnvironment env,
                                     String path,
                                     org.apache.flink.runtime.state.StateBackend stateBackend)
                              throws IOException

Loads an existing savepoint. Useful if you want to query, modify, or extend the state of an existing application.

Parameters:

env - The execution environment used to transform the savepoint.

path - The path to an existing savepoint on disk.

stateBackend - The state backend of the savepoint.

Throws:

IOException

create

public static NewSavepoint create(org.apache.flink.runtime.state.StateBackend stateBackend,
                                  int maxParallelism)

Creates a new savepoint.

Parameters:

stateBackend - The state backend of the savepoint used for keyed state.

maxParallelism - The max parallelism of the savepoint.

Returns:

A new savepoint.