failed to instrument span; msg=native Trace#start_span failed about skylight-ruby

[jeandenis-k]

Same problem here, using Rails 3.2 as well (3.2.22 to be precise).

[airblade]

I still have this problem. I've been on Skylight 0.10.2 for a while.

[wagenet]

This error happens when we've hit the limit for how many spans we instrument in a single request. The current limit is 1024, but we've talked about doubling it. I suspect this will happen soon. That said, we should definitely handle the failure case more elegantly. It's on our radar and we hope to devote some time to it soon.

[thilonel]

[SKYLIGHT] [1.0.0] failed to instrument span; msg=native Trace#start_span failed

Still around. Please fix it! :)

[hojberg]

@wagenet anyway to configure this at least? To up the max num spans

[faizalzakaria]

Do we have plan to fix this ?

[wagenet]

Unfortunately, we've been delayed on resolving this. I'll try to reprioritize.

[wagenet]

I just released version 1.4.0-beta which doubles the limit. Let me know if that helps at all. Depending on just how high your number of spans are it may not resolve it for you, but it's worth a try.

[lookageek]

Hitting the 2048 limit too. Ruby 2.3.1 and Rails 5.0 on Ubuntu 16.04

ERROR:skylight::c_api: failed to start tracing span; err="Exceeded maximum number of trace spans; MAX=2048"
[SKYLIGHT] internal error: failed to start tracing span

Can we configure this number? If yes how to even come up with a number that is specific to each app?

[wagenet]

@lookageek it's a number we've set on our end to avoid overloading our systems with a badly behaved endpoint. We'll probably up it again in the future but we need to make sure we can handle any extra load. What sort of work are you doing in the endpoint? I assume a complex loop?

[piotrze]

@wagenet We're hitting this limit too(app is quite big), does it mean when we hit this error the request will not be stored in skylight?

[AndrewRayCode]

Seeing this error too, what is going on? What are the downstream effects of getting this error in our app code?

[wagenet]

@AndrewRayCode no downstream effects for your app's operation. However, this may cause some data to not show up in your Skylight UI. Can you reach out to us via the in-app messenger or [email protected]?

@piotrze can you also reach out to our support if you're still having trouble?

[AndrewRayCode]

Does this mean that skylight won't report on significantly complex Ruby traces (which are the ones we probably want skylight on the most?)

[wagenet]

@AndrewRayCode we can best serve you via our standard support channels.