Package org.apache.flink.runtime.state.v2.internal

Interface InternalMergingState<K,N,IN,SV,OUT,SYNCOUT>

Type Parameters:

K - The type of key the state is associated to.

N - The namespace type.

IN - The type of the values that are added into the state.

SV - The type of the intermediate state.

OUT - The type of the values that are returned from the state.

SYNCOUT - Type of the value that can be retrieved from the state by synchronous interface.

All Superinterfaces:

org.apache.flink.api.common.state.v2.AppendingState<IN,OUT,SYNCOUT>, InternalAppendingState<K,N,IN,SV,OUT,SYNCOUT>, InternalKeyedState<K,N,SV>, InternalPartitionedState<N>, org.apache.flink.api.common.state.v2.MergingState<IN,OUT,SYNCOUT>, org.apache.flink.api.common.state.v2.State

All Known Subinterfaces:

InternalAggregatingState<K,N,IN,ACC,OUT>, InternalListState<K,N,V>, InternalReducingState<K,N,T>

All Known Implementing Classes:

AbstractAggregatingState, AbstractListState, AbstractReducingState, AggregatingStateAdaptor, ListStateAdaptor, MergingStateAdaptor, ReducingStateAdaptor

public interface InternalMergingState<K,N,IN,SV,OUT,SYNCOUT>
extends InternalAppendingState<K,N,IN,SV,OUT,SYNCOUT>, org.apache.flink.api.common.state.v2.MergingState<IN,OUT,SYNCOUT>

This class defines the internal interface for merging state.

Method Summary

Modifier and Type	Method	Description
org.apache.flink.api.common.state.v2.StateFuture<Void>	asyncMergeNamespaces(N target, Collection<N> sources)	Merges the state of the current key for the given source namespaces into the state of the target namespace.
void	mergeNamespaces(N target, Collection<N> sources)	Merges the state of the current key for the given source namespaces into the state of the target namespace.

Methods inherited from interface org.apache.flink.api.common.state.v2.AppendingState

add, asyncAdd, asyncGet, get

Methods inherited from interface org.apache.flink.runtime.state.v2.internal.InternalPartitionedState

setCurrentNamespace

Methods inherited from interface org.apache.flink.api.common.state.v2.State

asyncClear, clear

Method Detail

asyncMergeNamespaces

org.apache.flink.api.common.state.v2.StateFuture<Void> asyncMergeNamespaces(N target,
                                                                            Collection<N> sources)

Merges the state of the current key for the given source namespaces into the state of the target namespace.

Parameters:

target - The target namespace where the merged state should be stored.

sources - The source namespaces whose state should be merged.

mergeNamespaces

void mergeNamespaces(N target,
                     Collection<N> sources)

Merges the state of the current key for the given source namespaces into the state of the target namespace.

Parameters:

target - The target namespace where the merged state should be stored.

sources - The source namespaces whose state should be merged.