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https://issues.apache.org/jira/browse/FLINK-10327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16612390#comment-16612390
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ASF GitHub Bot commented on FLINK-10327:
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pnowojski opened a new pull request #6687: [FLINK-10327][streaming] Expose
processWatermarks notifications to (Co)ProcessFunction
URL: https://github.com/apache/flink/pull/6687
This PR exposes hooks for `processWatermark`, `processWatermark1` and
`processWatermark2` to `ProcessFunction` and `CoProcessFunction`.
## Verifying this change
Added new tests to `ProcessOperatorTest` and `CoProcessOperatorTest`
## 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, Yarn/Mesos, 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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> Pass processWatermark calls from (Co)ProcessOperator to (Co)ProcessFunction
> ---------------------------------------------------------------------------
>
> Key: FLINK-10327
> URL: https://issues.apache.org/jira/browse/FLINK-10327
> Project: Flink
> Issue Type: New Feature
> Components: Streaming
> Reporter: Piotr Nowojski
> Assignee: Shimin Yang
> Priority: Major
> Labels: pull-request-available
>
> Currently {{CoProcessFunction}} can not react to changes watermark
> advancement. By passing {{processWatermark}} calls to function we would give
> a way to perform some actions on watermark advancement, like state clean up
> or emitting some results after accumulating some data.
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