[BUG] AI (Internal): 18 message:"Failed to calculate the duration of the fetch call, monitoring data for this fetch call won't be sent" when call returns large list

[msalaman]

Description/Screenshot When client successfully calls ARM to get subscriptions with a skip toke (call results in 200), the following exception appears in app insights:

e(a,t,r,n){ie(): AI (Internal): 18 message:"Failed to calculate the duration of the fetch call, monitoring data for this fetch call won't be sent." props:"{fetchDiagnosticsMessage:(url: 'https://management.azure.com/subscriptions?api-version=2016-06-01&%24skiptoken=[skip token is here, not sharing for security purposes]

This appears to only happen when large amount of subscriptions are returned (e.g. it's impacting someone who has ownership role on entire tenant).

Steps to Reproduce Use app insights for client that makes a request that returns a large list, enable dependency fetching

• OS/Browser: All broswers
• SDK Version [e.g. 22]: 2.8.4

Expected behavior App insights can fetch this dependency call without throwing exception

Additional context Add any other context about the problem here.

[MSNev]

Do you have enableAjaxPerfTracking enabled? This seems to indicate that a "real" exception occurred, can you try using either the Chrome Debug Extension or the Debug Plugin as both of these should expose the underlying error included with the logged internal.

Failing these 2 some additional steps to help track down whats going on would be to enableDebugExceptions which will cause a JS runtime exception at the point of the message being generated (it might get noisy in the F12 Dev tools) and it would probably be easier to not have the code minified. If using the CDN just remove the .min so it would be ai.2.js instead of ai.2.min.js

[github-actions[bot]]

This Issue will be closed in 30 days. Please remove the "Stale" label or comment to avoid closure with no action.