org.apache.flink.runtime.state.metainfo

类 StateMetaInfoSnapshot

java.lang.Object

org.apache.flink.runtime.state.metainfo.StateMetaInfoSnapshot

public class StateMetaInfoSnapshot
extends Object

Generalized snapshot for meta information about one state in a state backend (e.g. RegisteredKeyValueStateBackendMetaInfo).

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	StateMetaInfoSnapshot.BackendStateType Enum that defines the different types of state that live in Flink backends.
static class	StateMetaInfoSnapshot.CommonOptionsKeys Predefined keys for the most common options in the meta info.
static class	StateMetaInfoSnapshot.CommonSerializerKeys Predefined keys for the most common serializer types in the meta info.

构造器概要

构造器

构造器和说明
StateMetaInfoSnapshot(String name, StateMetaInfoSnapshot.BackendStateType backendStateType, Map<String,String> options, Map<String,org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<?>> serializerSnapshots)
StateMetaInfoSnapshot(String name, StateMetaInfoSnapshot.BackendStateType backendStateType, Map<String,String> options, Map<String,org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<?>> serializerSnapshots, Map<String,org.apache.flink.api.common.typeutils.TypeSerializer<?>> serializers) TODO this variant, which requires providing the serializers, TODO should actually be removed, leaving only StateMetaInfoSnapshot(String, BackendStateType, Map, Map).

方法概要

限定符和类型	方法和说明
StateMetaInfoSnapshot.BackendStateType	getBackendStateType()
String	getName()
String	getOption(StateMetaInfoSnapshot.CommonOptionsKeys key)
String	getOption(String key)
Map<String,String>	getOptionsImmutable()
Map<String,org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<?>>	getSerializerSnapshotsImmutable()
org.apache.flink.api.common.typeutils.TypeSerializer<?>	getTypeSerializer(String key) TODO this method should be removed once the serializer map is removed.
org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<?>	getTypeSerializerSnapshot(StateMetaInfoSnapshot.CommonSerializerKeys key)
org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<?>	getTypeSerializerSnapshot(String key)

从类继承的方法 java.lang.Object

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

构造器详细资料

StateMetaInfoSnapshot

public StateMetaInfoSnapshot(@Nonnull
                             String name,
                             @Nonnull
                             StateMetaInfoSnapshot.BackendStateType backendStateType,
                             @Nonnull
                             Map<String,String> options,
                             @Nonnull
                             Map<String,org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<?>> serializerSnapshots)

StateMetaInfoSnapshot

public StateMetaInfoSnapshot(@Nonnull
                             String name,
                             @Nonnull
                             StateMetaInfoSnapshot.BackendStateType backendStateType,
                             @Nonnull
                             Map<String,String> options,
                             @Nonnull
                             Map<String,org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<?>> serializerSnapshots,
                             @Nonnull
                             Map<String,org.apache.flink.api.common.typeutils.TypeSerializer<?>> serializers)

TODO this variant, which requires providing the serializers, TODO should actually be removed, leaving only StateMetaInfoSnapshot(String, BackendStateType, Map, Map). TODO This is still used by snapshot extracting methods (i.e. computeSnapshot() method of specific state meta TODO info subclasses), and will be removed once all serializers have the restoreSerializer() factory method implemented.

方法详细资料

getBackendStateType

@Nonnull
public StateMetaInfoSnapshot.BackendStateType getBackendStateType()

getTypeSerializerSnapshot

@Nullable
public org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<?> getTypeSerializerSnapshot(@Nonnull
                                                                                                           String key)

getTypeSerializerSnapshot

@Nullable
public org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<?> getTypeSerializerSnapshot(@Nonnull
                                                                                                           StateMetaInfoSnapshot.CommonSerializerKeys key)

getOption

@Nullable
public String getOption(@Nonnull
                                  String key)

getOption

@Nullable
public String getOption(@Nonnull
                                  StateMetaInfoSnapshot.CommonOptionsKeys key)

getOptionsImmutable

@Nonnull
public Map<String,String> getOptionsImmutable()

getName

@Nonnull
public String getName()

getSerializerSnapshotsImmutable

@Nonnull
public Map<String,org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<?>> getSerializerSnapshotsImmutable()

getTypeSerializer

@Nullable
public org.apache.flink.api.common.typeutils.TypeSerializer<?> getTypeSerializer(@Nonnull
                                                                                           String key)

TODO this method should be removed once the serializer map is removed.