gemini-code-assist[bot] commented on PR #36524: URL: https://github.com/apache/beam/pull/36524#issuecomment-3406540940
## Summary of Changes Hello @stankiewicz, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request introduces foundational changes to support a 'drain' mechanism within Apache Beam's data processing model. It extends the `WindowedValue` interface and updates the protocol buffer definitions to include a `draining` state for elements. These modifications are crucial for enabling more robust and controlled shutdown procedures in streaming pipelines, allowing elements to be gracefully processed even as a job is winding down. The changes involve updating core data structures and simplifying `DoFn` output contexts by consolidating methods and leveraging a builder pattern for element construction. ### Highlights * **Drain Protocol Buffer Definition**: A new `DrainMode` enum and an optional `drain` field have been added to the `ElementMetadata` within the `beam_fn_api.proto` definition. This introduces a standardized way to signal the draining state of elements in the Beam Fn API. * **WindowedValue Interface Extension**: The `WindowedValue` interface has been extended to include an `isDraining()` method, and the `OutputBuilder` now supports a `setDraining()` method. This change propagates the draining state through the core data model. * **Simplified DoFn Output Contexts**: Multiple `output` and `outputWindowedValue` overloads in `DoFn.FinishBundleContext` and `DoFn.ProcessContext` that previously accepted `currentRecordId` and `currentRecordOffset` parameters have been removed. This streamlines the API by consolidating output methods and leveraging the `OutputBuilder` for detailed element construction. * **Draining State Plumbing**: The new `draining` state has been plumbed through various core Java runners (Dataflow, Spark), SDK components (`WindowedValues`, `DoFnTester`), and the Fn Harness. This ensures that the draining information is consistently available and propagated across the Beam ecosystem. <details> <summary><b>Using Gemini Code Assist</b></summary> <br> The full guide for Gemini Code Assist can be found on our [documentation page](https://developers.google.com/gemini-code-assist/docs/review-github-code), here are some quick tips. <b>Invoking Gemini</b> You can request assistance from Gemini at any point by creating a comment using either `/gemini <command>` or `@gemini-code-assist <command>`. Below is a summary of the supported commands on the current page. Feature | Command | Description --- | --- | --- Code Review | `/gemini review` | Performs a code review for the current pull request in its current state. Pull Request Summary | `/gemini summary` | Provides a summary of the current pull request in its current state. Comment | @gemini-code-assist | Responds in comments when explicitly tagged, both in pull request comments and review comments. Help | `/gemini help` | Displays a list of available commands. <b>Customization</b> To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a `.gemini/` folder in the base of the repository. Detailed instructions can be found [here](https://developers.google.com/gemini-code-assist/docs/customize-gemini-behavior-github). <b>Limitations & Feedback</b> Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with :thumbsup: and :thumbsdown: on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up [here](https://google.qualtrics.com/jfe/form/SV_2cyuGuTWsEw84yG). <b>You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the [Gemini Code Assist IDE Extension](https://cloud.google.com/products/gemini/code-assist).</b> </details> [^1]: Review the [Privacy Notices](https://policies.google.com/privacy), [Generative AI Prohibited Use Policy](https://policies.google.com/terms/generative-ai/use-policy), [Terms of Service](https://policies.google.com/terms), and learn how to configure Gemini Code Assist in GitHub [here](https://developers.google.com/gemini-code-assist/docs/customize-gemini-behavior-github). Gemini can make mistakes, so double check it and [use code with caution](https://support.google.com/legal/answer/13505487). -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
