lindong28 commented on code in PR #21579:
URL: https://github.com/apache/flink/pull/21579#discussion_r1062395605
##########
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/ChainingOutput.java:
##########
@@ -40,33 +38,24 @@
private static final Logger LOG =
LoggerFactory.getLogger(ChainingOutput.class);
protected final Input<T> input;
+ protected final Counter numRecordsOut;
protected final Counter numRecordsIn;
protected final WatermarkGauge watermarkGauge = new WatermarkGauge();
@Nullable protected final OutputTag<T> outputTag;
protected WatermarkStatus announcedStatus = WatermarkStatus.ACTIVE;
- public ChainingOutput(OneInputStreamOperator<T, ?> operator, @Nullable
OutputTag<T> outputTag) {
- this(operator, operator.getMetricGroup(), outputTag);
- }
-
public ChainingOutput(
Input<T> input,
- OperatorMetricGroup operatorMetricGroup,
+ @Nullable Counter prevNumRecordsOut,
+ OperatorMetricGroup curOperatorMetricGroup,
@Nullable OutputTag<T> outputTag) {
this.input = input;
-
- {
- Counter tmpNumRecordsIn;
- try {
- OperatorIOMetricGroup ioMetricGroup =
operatorMetricGroup.getIOMetricGroup();
- tmpNumRecordsIn = ioMetricGroup.getNumRecordsInCounter();
- } catch (Exception e) {
- LOG.warn("An exception occurred during the metrics setup.", e);
- tmpNumRecordsIn = new SimpleCounter();
- }
- numRecordsIn = tmpNumRecordsIn;
+ if (prevNumRecordsOut != null) {
+ this.numRecordsOut = prevNumRecordsOut;
+ } else {
+ this.numRecordsOut = new SimpleCounter();
Review Comment:
Sure. The comment is added.
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