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 Details

    • 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.