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.

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.

Application Insights Duplicate Telemetry

Accepted answer

Ryan Hill 27,686 Reputation points Microsoft Employee

2023-03-29T21:31:55.9333333+00:00

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.
Please sign in to rate this answer.

1 person found this answer helpful.
Diego Gaston Arrighi 40 Reputation points

2023-03-30T14:05:05.29+00:00

Hi, yes, We have Diagnostic Setting and Application Insights configured in each resoruce (Az functions, Api Managment, Etc) pointed to the same Log Analytics Workspace.

It only happend in production environment, in dev environment We have the same configuration, and no duplicated records

Ryan Hill 27,686 Reputation points Microsoft Employee

2023-04-07T22:23:05.7933333+00:00

In that case @Diego Gaston Arrighi please reach out to me offline so we can investigate your issue. Send me an email to AzCommunity[at]microsoft[dot]com ATTN: Ryan enclosed with a link to this post and your subscription id.

Diego Gaston Arrighi 40 Reputation points

2023-04-10T13:43:24.6833333+00:00

Hi. I found the problem. There were a Availability test created, with diagnostic setting configured, with all the logs. This cause the duplicated log.
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.

Share via

Application Insights Duplicate Telemetry

0 additional answers

Your answer