Github user kl0u commented on a diff in the pull request:
https://github.com/apache/flink/pull/3484#discussion_r106139449
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/OperatorChain.java
---
@@ -387,18 +401,49 @@ public int getChainLength() {
protected final StreamStatusProvider streamStatusProvider;
- public ChainingOutput(OneInputStreamOperator<T, ?> operator,
StreamStatusProvider streamStatusProvider) {
+ protected final OutputTag<T> outputTag;
+
+ public ChainingOutput(
+ OneInputStreamOperator<T, ?> operator,
+ StreamStatusProvider streamStatusProvider,
+ OutputTag<T> outputTag) {
this.operator = operator;
this.numRecordsIn = ((OperatorMetricGroup)
operator.getMetricGroup()).getIOMetricGroup().getNumRecordsInCounter();
this.streamStatusProvider = streamStatusProvider;
+ this.outputTag = outputTag;
}
@Override
public void collect(StreamRecord<T> record) {
+ if (this.outputTag != null) {
+ // we are only responsible for emitting to the
main input
+ return;
+ }
+
+ pushToOperator(record);
+ }
+
+ @Override
+ public <X> void collect(OutputTag<?> outputTag, StreamRecord<X>
record) {
+ if (this.outputTag == null ||
!this.outputTag.equals(outputTag)) {
+ // we are only responsible for emitting to the
side-output specified by our
+ // OutputTag.
+ return;
+ }
+
+ pushToOperator(record);
+ }
+
--- End diff --
This can become `private` as the copying alternative has its own
implementation, right?
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