Data interval/resolution issue introduced in 8.5.10 using graphite datasource

[rschitz]

What happened?

I know 8.5.27 is not technically supported anymore but we need time to migrate so we'd like to use it but we found an issue and were able to track down to version 8.5.10 meaning 8.5.9 was acting fine.

Here is the problem using the same dataset, in 8.5.9 the resolution match the storage schema but not 8.5.10 and above:

I'm not asking for a fix bug if this is code line i could change or a file i could replace to use the 8.5.27 and still be compliant with security it would be amazing.

ref : sexibytes/sexigraf#366

Thanks again for this awesome tool, we are using it in our monitoring appliance project SexiGraf for almost 10 years now :)

What did you expect to happen?

data resolution should match graphite storage schema

Did this work before?

before 8.5.10

How do we reproduce it?

upgrade to 8.5.10 or above

Is the bug inside a dashboard panel?

No response

Environment (with versions)?

No response

Grafana platform?

None

Datasource(s)?

Graphite 1.2

[bohandley]

Hi @rschitz! Thank you for researching this and thank you for your support for Grafana!

You are correct as we are not supporting versions this far back, but I was able to isolate a single change in Graphite between v8.5.9 and v8.5.10. I was not able to reproduce the issue but I hope this helps!

#51623

[rschitz]

Hi @bohandley thanks a lot for your time!
i think i already tried to revert those changes in the files but i'll try again and let you know.

[rschitz]

Tried those files https://github.com/grafana/grafana/pull/51623/files but nothing append. Am I supposed to do something after the modifications other than a service restart? (tried a reboot)
Thanks for your support, i'll soon check if this also affect 9.x and 10.x

[rschitz]

@bohandley would you like to have access to a 8.5.9 and a 8.5.27 with the same dataset?

[bohandley]

Sure! I can't promise anything though. I looked at the changes from v8.5.9 to v8.5.27 and I wasn't able to find any meaningful changes in Graphite data source other than what I showed you. There have been no meaningful changes in the backend which is where I would expect the change would come from. For these reasons, I am not sure this is in the Graphite data source in grafana.

If you could share that access as well as any info on your Graphite configuration in Grafana. Nothing changed with that, correct? Are you using a specific version? MetricTank or default?

[rschitz]

I'll send you access to both env on you email soon, thanks a lot for your time!
I'm using default install, i can also share the packet files used to deploy the vms.

[rschitz]

@bohandley did you get my email?

[bohandley]

Hi Raphael, Thank you! I did get your email but I did not have time to investigate this. Due to other priorities in our squad I will have to put this work on the back log for the next few weeks. Thank you, Brendan

…

On Mon, Jan 15, 2024 at 3:45 AM Raphaël SCHITZ ***@***.***> wrote: @bohandley <https://github.com/bohandley> did you get my email? — Reply to this email directly, view it on GitHub <#78973 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AGD4H6TPKMLGRC46JC7ZOH3YOTUBZAVCNFSM6AAAAABADHJ6CWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQOJRGU4DKNZUG4> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[rschitz]

Great, thank you. Just wanted to be sure it didnt end up in a spam folder or something.
Again, Thanks a lot for your help.