pnowojski opened a new pull request, #23845:
URL: https://github.com/apache/flink/pull/23845
## What is the purpose of the change
This PR adds a concept of `Span` and `TraceReporter` and uses that to report
checkpointing traces.
## Brief change log
Please check individual commit messages.
## Verifying this change
This change added tests and can be verified as follows:
- `CheckpointStatsTrackerTest#testSpanCreation` checks that a span with
proper Checkpoint ID is created.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (yes / **no**)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (**yes** / no)
- The serializers: (yes / **no** / don't know)
- The runtime per-record code paths (performance sensitive): (yes / **no**
/ don't know)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (yes / **no** / don't
know)
- The S3 file system connector: (yes / **no** / don't know)
## Documentation
- Does this pull request introduce a new feature? (**yes** / no)
- If yes, how is the feature documented? (not applicable / **docs** /
**JavaDocs** / not documented)
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