hanahmily opened a new issue, #13326: URL: https://github.com/apache/skywalking/issues/13326
### 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 After migrating the TopN calculator from data nodes to liaison nodes in BanyanDB, the liaison currently acts as a mapping node (similar to the "map" phase in map-reduce) by distributing writes to data nodes and collecting partial TopN results. However, it lacks a reduce step to aggregate these partial results from different data nodes for the same bucket. ### 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: notifications-unsubscr...@skywalking.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org