SteNicholas commented on a change in pull request #17105:
URL: https://github.com/apache/flink/pull/17105#discussion_r700831146
##########
File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/SourceOperator.java
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@@ -281,6 +290,21 @@ public void open() throws Exception {
watermarkStrategy, sourceMetricGroup);
}
+ latencyMarerEmitter =
+ new LatencyMarkerEmitter<>(
+ getProcessingTimeService(),
+ getExecutionConfig().isLatencyTrackingConfigured()
+ ?
getExecutionConfig().getLatencyTrackingInterval()
+ : getContainingTask() == null
Review comment:
> How `getContainingTask()` can return null?
When the `setup` of the `SourceOperator` isn't called with the operation
chain, the `getContainingTask()` could be null. But this case is impossible to
exist.
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