Application Insights Duplicate Telemetry

Question

Hi. I have duplicates entries in Application Insigth, not only traces from log.LogInformation() in Function App, also every log in traces, dependencies, request.

Example.

For the same operation_id, the requests log entries are duplicated

The same in dependencies

All the columns have the same data.

It is happening in production environment, but not in dev, qa, preprod, whit the same configurations.

Answer 1

Hi @Diego Gaston Arrighi ,

This can happen if you're using Log Analytics backed application insights components. If you have Diagnostic Setting pointed to the any Log Analytics Workspace in use Application Insights. Under your Application Insights resource, check the Diagnostic Settings blade and remove any associated workspace. Another option is to Handle duplicate data in Azure Data Explorer though querying.