MergingState (Flink : 2.0-SNAPSHOT API)

Type Parameters:

IN - Type of the value that can be added to the state.

OUT - Type of the value that can be retrieved from the state.

All Superinterfaces:

AppendingState<IN,OUT,SYNCOUT>, State

All Known Subinterfaces:

AggregatingState<IN,OUT>, InternalAggregatingState<K,N,IN,ACC,OUT>, InternalListState<K,N,V>, InternalMergingState<K,N,IN,SV,OUT,SYNCOUT>, InternalReducingState<K,N,T>, ListState<T>, ReducingState<T>

All Known Implementing Classes:

AbstractAggregatingState, AbstractListState, AbstractReducingState, AggregatingStateAdaptor, ForStAggregatingState, ForStListState, ForStReducingState, ListStateAdaptor, MergingStateAdaptor, ReducingStateAdaptor
```
@Experimental
public interface MergingState<IN,OUT,SYNCOUT>
extends AppendingState<IN,OUT,SYNCOUT>
```
Extension of AppendingState that allows merging of state. That is, two instances of MergingState can be combined into a single instance that contains all the information of the two merged states.

- Method Summary
  - Methods inherited from interface org.apache.flink.api.common.state.v2.AppendingState
    add, asyncAdd, asyncGet, get
  - Methods inherited from interface org.apache.flink.api.common.state.v2.State
    asyncClear, clear