[shazzy]

Uptrace looks really pretty interesting. I particularly like the query language that you can use to query your distributed trace data. This is the biggest limitation I have found with jaeger, lots valuable data is stored in storage, but it's very hard to analyze in aggregate.

For example, a question I want to be able to answer with a query against the distributed trace data: show me the (mean, median) time between a parent http request and a child http request in the same trace tree. As far as I understand, this requires the query language to be able to group by trace id, then be able to identify parent/child relations.

Does the Uptrace query language allow you to do something like this?

[vmihailenco]

So far my experience is that it is best to avoid trying to solve such problems with a query language and instead provide a much simpler UI to achieve the same. Solving such problems with SQL is tedious enough and learning another custom language is not fun / too much to ask from users.

Sometimes using a UI is not possible, for example, if you want to automate such checks. In that case, I would build a custom metric or two and would use that metric for monitoring purposes. That requires some programming / instrumentation, but it still looks like a better solution to me.