gemini-code-assist[bot] commented on PR #37162: URL: https://github.com/apache/beam/pull/37162#issuecomment-3681104031
## 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 reverts a prior change that inadvertently introduced data loss within the SolaceIO connector. The revert restores the critical functionality of acknowledging messages promptly, ensuring data integrity. It re-establishes a robust message acknowledgment mechanism by integrating it into the `advance()` and `close()` lifecycle methods of the Solace reader, utilizing a concurrent queue for reliable tracking and processing of messages awaiting acknowledgment. ### Highlights * **Revert of Data Loss Fix**: This pull request is a direct revert of a previous commit (f277b5ec59ba213af547167080fd8f5bd210e6a7) that was identified as causing data loss within the SolaceIO connector. * **Proactive Message Acknowledgment**: The revert reintroduces and strengthens the mechanism for acknowledging messages. Messages are now proactively acknowledged during the `advance()` and `close()` operations of the `UnboundedSolaceReader`. * **Queue-based Acknowledgment Mechanism**: The internal data structure for managing messages awaiting acknowledgment has been changed from a `List` to a `Queue` (specifically `ConcurrentLinkedQueue`). This allows for more efficient and thread-safe polling and removal of messages as they are acknowledged, preventing potential issues with concurrent access. * **Test Case Adjustments**: An existing test case (`testCheckpointMarkAndFinalizeSeparately`) has been updated to reflect the restored immediate acknowledgment behavior. Additionally, a test case (`testLateCheckpointOverlappingFlushingOfNextBundle`) that might have been related to the problematic behavior of the original commit has been removed. 🧠 **New Feature in Public Preview:** You can now enable **Memory** to help **Gemini Code Assist** learn from your team's feedback. 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