Be able to join dynamically on Groups about kapacitor HOT 2 CLOSED

This feature is pretty useful for my use case, I am currently creating alerts that looks on multiple instances and check their status relatively to other (for example: checking distribution of data/users between instances from the same type -> "all web servers should divide the users count euqaly").

So in my use case I can:

stream.from('users_count').groupBy('type').joinOnGroups(*).as('app1', 'app2')
// do some alert for (app1 / (app1.users_count + app2.users_count) / 2 (numbers of instance)) or app2.

Explanation of the calculation: to see if one instance has more than average user count and to alert on it.

from kapacitor.

@yosiat Thanks for the feedback. Glad to see its not just my crazy idea but that others have a use case in mind.

from kapacitor.