hanahmily opened a new issue, #13357: URL: https://github.com/apache/skywalking/issues/13357
### Search before asking - [x] I had searched in the [issues](https://github.com/apache/skywalking/issues?q=is%3Aissue) and found no similar feature requirement. ### Description #### Proposed Solution Refactor TopN query execution in data nodes into **two phases**: 1. **Local TopN Aggregation**: - Each data node computes its **local TopN list** (e.g., `["entity0:100", "entity3:20", "entity4:5"]`). - Only `entity_id` and aggregated values (e.g., sums/counts) are retained. 2. **Targeted Raw Data Fetch**: - Data nodes fetch **only raw data points** matching the top `entity_id` list (e.g., `entity_id IN ("entity0", "entity3", "entity4")`). #### Benefits - **Reduced Network Traffic**: Only aggregated TopN metadata + targeted raw data is transferred. - **Accuracy Guaranteed**: No truncation of raw data since filtering uses the TopN entity IDs. - **Backward-Compatible**: Works with existing TopN APIs and the liaison query aggregation procedure. ### Use case _No response_ ### Related issues _No response_ ### Are you willing to submit a pull request to implement this on your own? - [ ] Yes I am willing to submit a pull request on my own! ### Code of Conduct - [x] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) -- 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]
