org.apache.flink.runtime.state

Class RegisteredKeyValueStateBackendMetaInfo<N,S>

java.lang.Object

org.apache.flink.runtime.state.RegisteredStateMetaInfoBase

org.apache.flink.runtime.state.RegisteredKeyValueStateBackendMetaInfo<N,S>

Type Parameters:

N - Type of namespace

S - Type of state value

public class RegisteredKeyValueStateBackendMetaInfo<N,S>
extends RegisteredStateMetaInfoBase

Compound meta information for a registered state in a keyed state backend. This combines all serializers and the state name.

Field Summary

Fields inherited from class org.apache.flink.runtime.state.RegisteredStateMetaInfoBase

name

Constructor Summary

Constructors

Constructor and Description
RegisteredKeyValueStateBackendMetaInfo(StateDescriptor.Type stateType, String name, TypeSerializer<N> namespaceSerializer, TypeSerializer<S> stateSerializer)
RegisteredKeyValueStateBackendMetaInfo(StateDescriptor.Type stateType, String name, TypeSerializer<N> namespaceSerializer, TypeSerializer<S> stateSerializer, StateSnapshotTransformer.StateSnapshotTransformFactory<S> stateSnapshotTransformFactory)
RegisteredKeyValueStateBackendMetaInfo(StateMetaInfoSnapshot snapshot)

Method Summary

Modifier and Type	Method and Description
void	checkStateMetaInfo(StateDescriptor<?,?> stateDesc)
boolean	equals(Object o)
TypeSerializer<N>	getNamespaceSerializer()
TypeSerializer<N>	getPreviousNamespaceSerializer()
TypeSerializer<S>	getPreviousStateSerializer()
TypeSerializerSnapshot<S>	getPreviousStateSerializerSnapshot()
TypeSerializer<S>	getStateSerializer()
StateSnapshotTransformer.StateSnapshotTransformFactory<S>	getStateSnapshotTransformFactory()
StateDescriptor.Type	getStateType()
int	hashCode()
StateMetaInfoSnapshot	snapshot()
String	toString()
TypeSerializerSchemaCompatibility<N>	updateNamespaceSerializer(TypeSerializer<N> newNamespaceSerializer)
void	updateSnapshotTransformFactory(StateSnapshotTransformer.StateSnapshotTransformFactory<S> stateSnapshotTransformFactory)
TypeSerializerSchemaCompatibility<S>	updateStateSerializer(TypeSerializer<S> newStateSerializer)
RegisteredKeyValueStateBackendMetaInfo<N,S>	withSerializerUpgradesAllowed() create a new metadata object with Lazy serializer provider using existing one as a snapshot.

Methods inherited from class org.apache.flink.runtime.state.RegisteredStateMetaInfoBase

fromMetaInfoSnapshot, getName

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

RegisteredKeyValueStateBackendMetaInfo

public RegisteredKeyValueStateBackendMetaInfo(@Nonnull
                                              StateDescriptor.Type stateType,
                                              @Nonnull
                                              String name,
                                              @Nonnull
                                              TypeSerializer<N> namespaceSerializer,
                                              @Nonnull
                                              TypeSerializer<S> stateSerializer)

RegisteredKeyValueStateBackendMetaInfo

public RegisteredKeyValueStateBackendMetaInfo(@Nonnull
                                              StateDescriptor.Type stateType,
                                              @Nonnull
                                              String name,
                                              @Nonnull
                                              TypeSerializer<N> namespaceSerializer,
                                              @Nonnull
                                              TypeSerializer<S> stateSerializer,
                                              @Nonnull
                                              StateSnapshotTransformer.StateSnapshotTransformFactory<S> stateSnapshotTransformFactory)

RegisteredKeyValueStateBackendMetaInfo

public RegisteredKeyValueStateBackendMetaInfo(@Nonnull
                                              StateMetaInfoSnapshot snapshot)

Method Detail

getStateType

@Nonnull
public StateDescriptor.Type getStateType()

getNamespaceSerializer

@Nonnull
public TypeSerializer<N> getNamespaceSerializer()

updateNamespaceSerializer

@Nonnull
public TypeSerializerSchemaCompatibility<N> updateNamespaceSerializer(TypeSerializer<N> newNamespaceSerializer)

getPreviousNamespaceSerializer

@Nonnull
public TypeSerializer<N> getPreviousNamespaceSerializer()

getStateSerializer

@Nonnull
public TypeSerializer<S> getStateSerializer()

updateStateSerializer

@Nonnull
public TypeSerializerSchemaCompatibility<S> updateStateSerializer(TypeSerializer<S> newStateSerializer)

getPreviousStateSerializer

@Nonnull
public TypeSerializer<S> getPreviousStateSerializer()

getPreviousStateSerializerSnapshot

@Nullable
public TypeSerializerSnapshot<S> getPreviousStateSerializerSnapshot()

getStateSnapshotTransformFactory

@Nonnull
public StateSnapshotTransformer.StateSnapshotTransformFactory<S> getStateSnapshotTransformFactory()

updateSnapshotTransformFactory

public void updateSnapshotTransformFactory(StateSnapshotTransformer.StateSnapshotTransformFactory<S> stateSnapshotTransformFactory)

equals

public boolean equals(Object o)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

snapshot

@Nonnull
public StateMetaInfoSnapshot snapshot()

Specified by:

snapshot in class RegisteredStateMetaInfoBase

withSerializerUpgradesAllowed

@Nonnull
public RegisteredKeyValueStateBackendMetaInfo<N,S> withSerializerUpgradesAllowed()

Description copied from class: RegisteredStateMetaInfoBase

create a new metadata object with Lazy serializer provider using existing one as a snapshot. Sometimes metadata was just created or updated, but its StateSerializerProvider will not allow further updates. So this method could replace it with a new one that contains a fresh LazilyRegisteredStateSerializerProvider.

Specified by:

withSerializerUpgradesAllowed in class RegisteredStateMetaInfoBase

checkStateMetaInfo

public void checkStateMetaInfo(StateDescriptor<?,?> stateDesc)