corgy-w opened a new pull request, #7736:
URL: https://github.com/apache/seatunnel/pull/7736
### Purpose of this pull request
issues: #7735
Discussion：
1. If batch tasks do not set checkpoints, there will be no updates to sink
metrics, and it is necessary to refresh them periodically.
2. Using `MultiSink` cannot avoid error statistics for a batch period,
meaning the actual sink writer write count is: (actual writes + batchSize).
3. Accurate statistics require the sink writer to implement
`SinkMetricsCalc`.
### Does this PR introduce _any_ user-facing change?
### How was this patch tested?
### Check list
* [ ] If any new Jar binary package adding in your PR, please add License
Notice according
[New License
Guide](https://github.com/apache/seatunnel/blob/dev/docs/en/contribution/new-license.md)
* [ ] If necessary, please update the documentation to describe the new
feature. https://github.com/apache/seatunnel/tree/dev/docs
* [ ] If you are contributing the connector code, please check that the
following files are updated:
1. Update
[plugin-mapping.properties](https://github.com/apache/seatunnel/blob/dev/plugin-mapping.properties)
and add new connector information in it
2. Update the pom file of
[seatunnel-dist](https://github.com/apache/seatunnel/blob/dev/seatunnel-dist/pom.xml)
3. Add ci label in
[label-scope-conf](https://github.com/apache/seatunnel/blob/dev/.github/workflows/labeler/label-scope-conf.yml)
4. Add e2e testcase in
[seatunnel-e2e](https://github.com/apache/seatunnel/tree/dev/seatunnel-e2e/seatunnel-connector-v2-e2e/)
5. Update connector
[plugin_config](https://github.com/apache/seatunnel/blob/dev/config/plugin_config)
* [ ] Update the
[`release-note`](https://github.com/apache/seatunnel/blob/dev/release-note.md).
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