DanielLeens commented on issue #12799: URL: https://github.com/apache/seatunnel/issues/12799#issuecomment-6191907468
Classification: A / Connector-V2 JDBC sink batching. The current reduced-batch executor stores rows in a `LinkedHashMap` keyed by the extracted key, so rows with a nullable configured key can collapse before any SQL is sent. That differs from database unique-key semantics and can silently lose data even when the reported sink count advances. #12803 is the single focused fix. It must preserve the existing last-write-wins reduction for fully non-null keys while ensuring every row whose key contains a null component reaches the delegate executor. Please include multiple null-key rows, mixed null/non-null keys, and the existing non-null deduplication behavior in regression coverage. Keep follow-up on #12803 rather than opening a parallel patch. -- 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]
