gianm opened a new pull request, #19193: URL: https://github.com/apache/druid/pull/19193
This patch adds optional row combining during merge-sort for MSQ groupBy. When enabled using the `useCombiner` parameter (default: false), FrameChannelMerger detects adjacent rows with identical sort keys and combines them using a FrameCombiner provided by the query logic. Main files: 1) `FrameCombiner`: stateful row combiner interface. 2) `FrameChannelMerger`: logic for determining which rows to combine. 3) `GroupByFrameCombiner`: implementation for the groupBy query. -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
