org.apache.flink.runtime.checkpoint.savepoint

Class SavepointLoader

java.lang.Object

org.apache.flink.runtime.checkpoint.savepoint.SavepointLoader

public class SavepointLoader
extends Object

The SavepointLoader is a utility to load and verify a Savepoint, and to create a checkpoint from it.

Method Summary

Methods

Modifier and Type	Method and Description
static CompletedCheckpoint	loadAndValidateSavepoint(JobID jobId, Map<JobVertexID,ExecutionJobVertex> tasks, String savepointPath, ClassLoader classLoader, boolean allowNonRestoredState) Loads a savepoint back as a CompletedCheckpoint.

Methods inherited from class java.lang.Object

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

Method Detail

loadAndValidateSavepoint

public static CompletedCheckpoint loadAndValidateSavepoint(JobID jobId,
                                           Map<JobVertexID,ExecutionJobVertex> tasks,
                                           String savepointPath,
                                           ClassLoader classLoader,
                                           boolean allowNonRestoredState)
                                                    throws IOException

Loads a savepoint back as a CompletedCheckpoint.

This method verifies that tasks and parallelism still match the savepoint parameters.

Parameters:

jobId - The JobID of the job to load the savepoint for.

tasks - Tasks that will possibly be reset

savepointPath - The path of the savepoint to rollback to

classLoader - The class loader to resolve serialized classes in legacy savepoint versions.

allowNonRestoredState - Allow to skip checkpoint state that cannot be mapped to any job vertex in tasks.

Throws:

IllegalStateException - If mismatch between program and savepoint state

IOException - If savepoint store failure