Github user asfgit closed the pull request at:
https://github.com/apache/spark/pull/17221
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GitHub user uncleGen opened a pull request:
https://github.com/apache/spark/pull/17221
[SPARK-19859][SS][Follow-up] The new watermark should override the old one.
## What changes were proposed in this pull request?
A follow up to SPARK-19859:
- extract the
