aglinxinyuan opened a new pull request, #4908: URL: https://github.com/apache/texera/pull/4908
## Summary - New `AggregationOperationSpec` (19 tests) pinning the public contract of `AggregationOperation`: result-column typing per kind, type-validation errors, the per-kind `DistributedAggregation` semantics (init/iterate/merge/finalAgg) for SUM/COUNT/AVERAGE/CONCAT, and the `getFinal` rewrite that turns COUNT into SUM over the partial column. Closes #4907 ## Test plan - [x] `sbt 'WorkflowOperator/Test/testOnly org.apache.texera.amber.operator.aggregate.AggregationOperationSpec'` — all 19 cases pass. - [x] `sbt 'WorkflowOperator/Test/scalafmtCheck'` — clean. 🤖 Generated with [Claude Code](https://claude.com/claude-code) -- 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]
