[Q] Does aggregation-rule works with tagged metrics?

[whispererli]

Hello all,

I got a question regarding how to apply aggregation rules to tagged metrics.
My test metrics are looking like:
request_count;app=test;api=test1;status_code=400
and my aggregation rule is:
request_count;app=<env>;api=<api>;status_code=<status_code> (60) = sum request_count;app=<\<env>>;api=<\<api>>;status_code=<\<status_code>>
When inject the metrics to carbon-aggregator I got follow errors:
27/03/2020 17:09:37 :: [console] Couldn't match metric request_count;app=test;api=test1;status_code=400 with any aggregation rule. Passing on un-aggregated. 27/03/2020 17:09:37 :: [console] Couldn't match metric request_count;app=test;api=test1;status_code=200 with any aggregation rule. Passing on un-aggregated. 27/03/2020 17:09:37 :: [console] Couldn't match metric request_count;app=test;api=test3;status_code=200 with any aggregation rule. Passing on un-aggregated.
Changed aggregation rule to request_count (60) = sum request_count also not works.
Can't find an example about how to set aggregation rule with tagged metrics. Is there a way to do that? Thanks very much!

[whispererli]

So looks like it's not supported, from the function 'build_regex' the above pattern will build to:
request_count;app=(?P<env>[^.]+?);api=<api>;status_code=<status_code> which only replace the first tag...

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[f-michaut]

Hello, I have some tagged series and I'd like to aggregate them.
I couldn't find any exemple to use tagged series with carbon-aggregator, is there a way to do so ?

[deniszh]

Unfortunately, as @whispererli found, currently it's not supported.

[f-michaut]

Are you planning to implement this ?

I think it would be verry usefull, as tagged series are verry powerfull. But if we can't agregate them, we will run into some limitations...
For instance, I have a lot of tagged series, and aggregating them at querry time is verry expensive, my dashboard take a lot of time to load. With carbon-aggregator supporting tagged series it wouldn't be a problem at all.

[deniszh]

I'm suspecting that would be quite non-trivial task, unfortunately. Worth to try, of course, but not sure that I can do that.