org.apache.flink.runtime.state.memory

Class MemReducingState<K,N,V>

java.lang.Object

org.apache.flink.runtime.state.AbstractHeapState<K,N,SV,S,SD,MemoryStateBackend>

org.apache.flink.runtime.state.memory.AbstractMemState<K,N,V,org.apache.flink.api.common.state.ReducingState<V>,org.apache.flink.api.common.state.ReducingStateDescriptor<V>>

org.apache.flink.runtime.state.memory.MemReducingState<K,N,V>

Type Parameters:

K - The type of the key.

N - The type of the namespace.

V - The type of the values in the list state.

All Implemented Interfaces:

org.apache.flink.api.common.state.AppendingState<V,V>, org.apache.flink.api.common.state.MergingState<V,V>, org.apache.flink.api.common.state.ReducingState<V>, org.apache.flink.api.common.state.State, KvState<K,N,org.apache.flink.api.common.state.ReducingState<V>,org.apache.flink.api.common.state.ReducingStateDescriptor<V>,MemoryStateBackend>

public class MemReducingState<K,N,V>
extends AbstractMemState<K,N,V,org.apache.flink.api.common.state.ReducingState<V>,org.apache.flink.api.common.state.ReducingStateDescriptor<V>>
implements org.apache.flink.api.common.state.ReducingState<V>

Heap-backed partitioned ReducingState that is snapshotted into a serialized memory copy.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MemReducingState.Snapshot<K,N,V>

Field Summary

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

currentKey, currentNamespace, currentNSState, keySerializer, namespaceSerializer, state, stateDesc, stateSerializer

Constructor Summary

Constructors

Constructor and Description
MemReducingState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, org.apache.flink.api.common.state.ReducingStateDescriptor<V> stateDesc)
MemReducingState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, org.apache.flink.api.common.state.ReducingStateDescriptor<V> stateDesc, HashMap<N,Map<K,V>> state)

Method Summary

Modifier and Type	Method and Description
void	add(V value)
KvStateSnapshot<K,N,org.apache.flink.api.common.state.ReducingState<V>,org.apache.flink.api.common.state.ReducingStateDescriptor<V>,MemoryStateBackend>	createHeapSnapshot(byte[] bytes)
V	get()

Methods inherited from class org.apache.flink.runtime.state.memory.AbstractMemState

snapshot

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

clear, dispose, getKeySerializer, getNamespaceSerializer, setCurrentKey, setCurrentNamespace, size

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.api.common.state.State

clear

Constructor Detail

MemReducingState

public MemReducingState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                        org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer,
                        org.apache.flink.api.common.state.ReducingStateDescriptor<V> stateDesc)

MemReducingState

public MemReducingState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                        org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer,
                        org.apache.flink.api.common.state.ReducingStateDescriptor<V> stateDesc,
                        HashMap<N,Map<K,V>> state)

Method Detail

get

public V get()

Specified by:

get in interface org.apache.flink.api.common.state.AppendingState<V,V>

add

public void add(V value)
         throws IOException

Specified by:

add in interface org.apache.flink.api.common.state.AppendingState<V,V>

Throws:

IOException

createHeapSnapshot

public KvStateSnapshot<K,N,org.apache.flink.api.common.state.ReducingState<V>,org.apache.flink.api.common.state.ReducingStateDescriptor<V>,MemoryStateBackend> createHeapSnapshot(byte[] bytes)

Specified by:

createHeapSnapshot in class AbstractMemState<K,N,V,org.apache.flink.api.common.state.ReducingState<V>,org.apache.flink.api.common.state.ReducingStateDescriptor<V>>