org.apache.flink.runtime.state

接口 CheckpointableKeyedStateBackend<K>

类型参数:

K - Type of the key by which state is keyed.

所有超级接口:

AutoCloseable, Closeable, org.apache.flink.util.Disposable, KeyedStateBackend<K>, KeyedStateFactory, PriorityQueueSetFactory, Snapshotable<SnapshotResult<KeyedStateHandle>>

所有已知实现类:

AbstractKeyedStateBackend, HeapKeyedStateBackend

public interface CheckpointableKeyedStateBackend<K>
extends KeyedStateBackend<K>, Snapshotable<SnapshotResult<KeyedStateHandle>>, Closeable

Interface that combines both, the KeyedStateBackend interface, which encapsulates methods responsible for keyed state management and the Snapshotable which tells the system how to snapshot the underlying state.

NOTE: State backends that need to be notified of completed checkpoints can additionally implement the CheckpointListener interface.

嵌套类概要

从接口继承的嵌套类/接口 org.apache.flink.runtime.state.KeyedStateBackend

KeyedStateBackend.KeySelectionListener<K>

方法概要

限定符和类型	方法和说明
KeyGroupRange	getKeyGroupRange() Returns the key groups which this state backend is responsible for.
SavepointResources<K>	savepoint() Returns a SavepointResources that can be used by SavepointSnapshotStrategy to write out a savepoint in the common/unified format.

从接口继承的方法 org.apache.flink.runtime.state.KeyedStateBackend

applyToAllKeys, deregisterKeySelectionListener, dispose, getCurrentKey, getKeys, getKeysAndNamespaces, getKeySerializer, getOrCreateKeyedState, getPartitionedState, isSafeToReuseKVState, isStateImmutableInStateBackend, registerKeySelectionListener, setCurrentKey

从接口继承的方法 org.apache.flink.runtime.state.KeyedStateFactory

createOrUpdateInternalState, createOrUpdateInternalState, createOrUpdateInternalState

从接口继承的方法 org.apache.flink.runtime.state.PriorityQueueSetFactory

create, create

从接口继承的方法 org.apache.flink.runtime.state.Snapshotable

snapshot

从接口继承的方法 java.io.Closeable

close

方法详细资料

getKeyGroupRange

KeyGroupRange getKeyGroupRange()

Returns the key groups which this state backend is responsible for.

savepoint

@Nonnull
SavepointResources<K> savepoint()
                                  throws Exception

Returns a SavepointResources that can be used by SavepointSnapshotStrategy to write out a savepoint in the common/unified format.

抛出:

Exception