[FLINK-31752] SourceOperatorStreamTask increments numRecordsOut twice - ASF JIRA

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Details

Type: Bug
Status: Closed
Priority: Major
Resolution: Fixed
Affects Version/s: 1.17.0
Fix Version/s: 1.18.0, 1.17.1
Component/s: Runtime / Metrics
Labels:
- pull-request-available

Description

The counter of numRecordsOut was introduce to ChainingOutput to reduce the function call stack depth in
https://issues.apache.org/jira/browse/FLINK-30536

But SourceOperatorStreamTask.AsyncDataOutputToOutput increments the counter of numRecordsOut too. This results in the source operator's numRecordsOut are doubled.

We should delete the numRecordsOut.inc in SourceOperatorStreamTask.AsyncDataOutputToOutput.

xtsong lindong Could you please take a look at this.