Jiayi-Liao opened a new pull request #12416:
URL: https://github.com/apache/flink/pull/12416
## What is the purpose of the change
Latency marker is triggered with fixed rate, which means it may be sent
immediately again if the source task is blocking. (which dosen't help a lot to
the latency metrics)
## Brief change log
* switch `scheduleAtFixedRate` with `scheduleWithFixedDelay`.
## Verifying this change
* existing unit testing should cover this change.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: no
- The serializers: no
- The runtime per-record code paths (performance sensitive): no
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? no
- If yes, how is the feature documented? not applicable
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