org.apache.flink.streaming.runtime.tasks

Interface OutputWithChainingCheck<OUT>

All Superinterfaces:

AutoCloseable, Closeable, Collector<OUT>, Output<OUT>, WatermarkGaugeExposingOutput<OUT>

All Known Implementing Classes:

RecordWriterOutput

@Internal
public interface OutputWithChainingCheck<OUT>
extends WatermarkGaugeExposingOutput<OUT>

This is a wrapper for outputs to check whether the collected record has been emitted to a downstream subtask or to a chained operator.

Method Summary

Modifier and Type	Method and Description
boolean	collectAndCheckIfChained(OUT record)
<X> boolean	collectAndCheckIfChained(OutputTag<X> outputTag, StreamRecord<X> record)

Methods inherited from interface org.apache.flink.streaming.runtime.tasks.WatermarkGaugeExposingOutput

getWatermarkGauge

Methods inherited from interface org.apache.flink.streaming.api.operators.Output

collect, emitLatencyMarker, emitRecordAttributes, emitWatermark, emitWatermarkStatus

Methods inherited from interface org.apache.flink.util.Collector

close, collect

Methods inherited from interface java.io.Closeable

close

Method Detail

collectAndCheckIfChained

boolean collectAndCheckIfChained(OUT record)

Returns:

true if the collected record has been emitted to a downstream subtask. Otherwise, false.

collectAndCheckIfChained

<X> boolean collectAndCheckIfChained(OutputTag<X> outputTag,
                                     StreamRecord<X> record)

Returns:

true if the collected record has been emitted to a downstream subtask. Otherwise, false.