Design doc: topk/bottomk aggregation over time

[Ganesh Vernekar]

Hi everyone,

After talking to multiple people over past few weeks, I have curated the ideas in the following design doc to solve the problem mentioned in the title (here is the GitHub issue).

https://docs.google.com/document/d/1uSbD3T2beM-iX4-Hp7V074bzBRiRNlqUdcWP6JTDQSs/edit?usp=sharing

Please have a look and express any concerns or support for the listed solutions in the doc.

Thanks,

Ganesh