Package org.apache.flink.streaming.runtime.operators.asyncprocessing

Interface AsyncStateProcessingOperator

All Superinterfaces:

AsyncStateProcessing

All Known Implementing Classes:

AbstractAsyncStateStreamOperator, AbstractAsyncStateStreamOperatorV2, AbstractAsyncStateUdfStreamOperator

@Internal
public interface AsyncStateProcessingOperator
extends AsyncStateProcessing

A more detailed interface based on AsyncStateProcessing, which gives the essential methods for an operator to perform async state processing.

Method Summary

Modifier and Type	Method	Description
<K> void	asyncProcessWithKey(K key, org.apache.flink.util.function.ThrowingRunnable<Exception> processing)	Asynchronously process a code with a key provided.
ElementOrder	getElementOrder()	Get the ElementOrder of this operator.
void	postProcessElement()	A callback that will be triggered after an element finishes processElement.
void	preserveRecordOrderAndProcess(org.apache.flink.util.function.ThrowingRunnable<Exception> processing)	Check the order of same-key record, and then process the record.
<T> void	setAsyncKeyedContextElement(StreamRecord<T> record, org.apache.flink.api.java.functions.KeySelector<T,?> keySelector)	Set key context for async state processing.

Methods inherited from interface org.apache.flink.streaming.runtime.operators.asyncprocessing.AsyncStateProcessing

getRecordProcessor, isAsyncStateProcessingEnabled

Method Detail

getElementOrder

ElementOrder getElementOrder()

Get the ElementOrder of this operator.

setAsyncKeyedContextElement

<T> void setAsyncKeyedContextElement(StreamRecord<T> record,
                                     org.apache.flink.api.java.functions.KeySelector<T,?> keySelector)
                              throws Exception

Set key context for async state processing.

Type Parameters:

T - the type of the record.

Parameters:

record - the record.

keySelector - the key selector to select a key from record.

Throws:

Exception

postProcessElement

void postProcessElement()

A callback that will be triggered after an element finishes processElement.

preserveRecordOrderAndProcess

void preserveRecordOrderAndProcess(org.apache.flink.util.function.ThrowingRunnable<Exception> processing)

Check the order of same-key record, and then process the record. Mainly used when the getElementOrder() returns ElementOrder.RECORD_ORDER.

Parameters:

processing - the record processing logic.

asyncProcessWithKey

<K> void asyncProcessWithKey(K key,
                             org.apache.flink.util.function.ThrowingRunnable<Exception> processing)

Asynchronously process a code with a key provided.

Type Parameters:

K - the type of key.

Parameters:

key - the specified key.

processing - the process logic.