org.apache.flink.state.api.runtime.metadata

Class SavepointMetadata

java.lang.Object

org.apache.flink.state.api.runtime.metadata.SavepointMetadata

@Internal
public class SavepointMetadata
extends Object

Savepoint metadata that can be modified.

Constructor Summary

Constructors

Constructor and Description
SavepointMetadata(int maxParallelism, Collection<org.apache.flink.runtime.checkpoint.MasterState> masterStates, Collection<org.apache.flink.runtime.checkpoint.OperatorState> initialStates)

Method Summary

Modifier and Type	Method and Description
void	addOperator(String uid, BootstrapTransformation<?> transformation)
List<org.apache.flink.runtime.checkpoint.OperatorState>	getExistingOperators()
Collection<org.apache.flink.runtime.checkpoint.MasterState>	getMasterStates()
int	getMaxParallelism()
List<BootstrapTransformationWithID<?>>	getNewOperators()
org.apache.flink.runtime.checkpoint.OperatorState	getOperatorState(String uid)
void	removeOperator(String uid)

Methods inherited from class java.lang.Object

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

Constructor Detail

SavepointMetadata

public SavepointMetadata(int maxParallelism,
                         Collection<org.apache.flink.runtime.checkpoint.MasterState> masterStates,
                         Collection<org.apache.flink.runtime.checkpoint.OperatorState> initialStates)

Method Detail

getMaxParallelism

public int getMaxParallelism()

getMasterStates

public Collection<org.apache.flink.runtime.checkpoint.MasterState> getMasterStates()

getOperatorState

public org.apache.flink.runtime.checkpoint.OperatorState getOperatorState(String uid)
                                                                   throws IOException

Returns:

Operator state for the given UID.

Throws:

IOException - If the savepoint does not contain operator state with the given uid.

removeOperator

public void removeOperator(String uid)

addOperator

public void addOperator(String uid,
                        BootstrapTransformation<?> transformation)

getExistingOperators

public List<org.apache.flink.runtime.checkpoint.OperatorState> getExistingOperators()

Returns:

List of OperatorState that already exists within the savepoint.

getNewOperators

public List<BootstrapTransformationWithID<?>> getNewOperators()

Returns:

List of new operator states for the savepoint, represented by their target OperatorID and BootstrapTransformation.