org.apache.flink.runtime.state.heap

Class CopyOnWriteSkipListStateMap<K,N,S>

java.lang.Object

org.apache.flink.runtime.state.heap.StateMap<K,N,S>

org.apache.flink.runtime.state.heap.CopyOnWriteSkipListStateMap<K,N,S>

Type Parameters:

K - type of key

N - type of namespace

S - type of state

All Implemented Interfaces:

AutoCloseable, Iterable<org.apache.flink.runtime.state.StateEntry<K,N,S>>

public final class CopyOnWriteSkipListStateMap<K,N,S>
extends org.apache.flink.runtime.state.heap.StateMap<K,N,S>
implements AutoCloseable

Implementation of state map which is based on skip list with copy-on-write support. states will be serialized to bytes and stored in the space allocated with the given allocator.

Constructor Summary

Constructors

Constructor and Description
CopyOnWriteSkipListStateMap(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, org.apache.flink.api.common.typeutils.TypeSerializer<S> stateSerializer, Allocator spaceAllocator, int numKeysToDeleteOneTime, float logicalRemovedKeysRatio)

Method Summary

Modifier and Type	Method and Description
void	close()
boolean	containsKey(K key, N namespace)
S	get(K key, N namespace)
java.util.stream.Stream<K>	getKeys(N namespace)
int	getRequestCount()
org.apache.flink.runtime.state.internal.InternalKvState.StateIncrementalVisitor<K,N,S>	getStateIncrementalVisitor(int recommendedMaxNumberOfReturnedRecords)
Iterator<org.apache.flink.runtime.state.StateEntry<K,N,S>>	iterator()
void	put(K key, N namespace, S state)
S	putAndGetOld(K key, N namespace, S state)
void	releaseSnapshot(org.apache.flink.runtime.state.heap.StateMapSnapshot<K,N,S,? extends org.apache.flink.runtime.state.heap.StateMap<K,N,S>> snapshotToRelease)
void	remove(K key, N namespace)
S	removeAndGetOld(K key, N namespace)
int	size()
int	sizeOfNamespace(Object namespace)
CopyOnWriteSkipListStateMapSnapshot<K,N,S>	stateSnapshot()
<T> void	transform(K key, N namespace, T value, org.apache.flink.runtime.state.StateTransformationFunction<S,T> transformation)

Methods inherited from class org.apache.flink.runtime.state.heap.StateMap

isEmpty

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

CopyOnWriteSkipListStateMap

public CopyOnWriteSkipListStateMap(@Nonnull
                                   org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                                   @Nonnull
                                   org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer,
                                   @Nonnull
                                   org.apache.flink.api.common.typeutils.TypeSerializer<S> stateSerializer,
                                   @Nonnull
                                   Allocator spaceAllocator,
                                   int numKeysToDeleteOneTime,
                                   float logicalRemovedKeysRatio)

Method Detail

size

public int size()

Specified by:

size in class org.apache.flink.runtime.state.heap.StateMap<K,N,S>

getRequestCount

public int getRequestCount()

get

public S get(K key,
             N namespace)

Specified by:

get in class org.apache.flink.runtime.state.heap.StateMap<K,N,S>

containsKey

public boolean containsKey(K key,
                           N namespace)

Specified by:

containsKey in class org.apache.flink.runtime.state.heap.StateMap<K,N,S>

put

public void put(K key,
                N namespace,
                S state)

Specified by:

put in class org.apache.flink.runtime.state.heap.StateMap<K,N,S>

putAndGetOld

public S putAndGetOld(K key,
                      N namespace,
                      S state)

Specified by:

putAndGetOld in class org.apache.flink.runtime.state.heap.StateMap<K,N,S>

remove

public void remove(K key,
                   N namespace)

Specified by:

remove in class org.apache.flink.runtime.state.heap.StateMap<K,N,S>

removeAndGetOld

public S removeAndGetOld(K key,
                         N namespace)

Specified by:

removeAndGetOld in class org.apache.flink.runtime.state.heap.StateMap<K,N,S>

transform

public <T> void transform(K key,
                          N namespace,
                          T value,
                          org.apache.flink.runtime.state.StateTransformationFunction<S,T> transformation)
                   throws Exception

Specified by:

transform in class org.apache.flink.runtime.state.heap.StateMap<K,N,S>

Throws:

Exception

getKeys

public java.util.stream.Stream<K> getKeys(N namespace)

Specified by:

getKeys in class org.apache.flink.runtime.state.heap.StateMap<K,N,S>

sizeOfNamespace

public int sizeOfNamespace(Object namespace)

Specified by:

sizeOfNamespace in class org.apache.flink.runtime.state.heap.StateMap<K,N,S>

iterator

@Nonnull
public Iterator<org.apache.flink.runtime.state.StateEntry<K,N,S>> iterator()

Specified by:

iterator in interface Iterable<org.apache.flink.runtime.state.StateEntry<K,N,S>>

getStateIncrementalVisitor

public org.apache.flink.runtime.state.internal.InternalKvState.StateIncrementalVisitor<K,N,S> getStateIncrementalVisitor(int recommendedMaxNumberOfReturnedRecords)

Specified by:

getStateIncrementalVisitor in class org.apache.flink.runtime.state.heap.StateMap<K,N,S>

stateSnapshot

@Nonnull
public CopyOnWriteSkipListStateMapSnapshot<K,N,S> stateSnapshot()

Specified by:

stateSnapshot in class org.apache.flink.runtime.state.heap.StateMap<K,N,S>

releaseSnapshot

public void releaseSnapshot(org.apache.flink.runtime.state.heap.StateMapSnapshot<K,N,S,? extends org.apache.flink.runtime.state.heap.StateMap<K,N,S>> snapshotToRelease)

Overrides:

releaseSnapshot in class org.apache.flink.runtime.state.heap.StateMap<K,N,S>

close

public void close()

Specified by:

close in interface AutoCloseable