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Izyaan_sc's avatar
Izyaan_sc
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6 months ago
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User Data Function: 'NotFound' Error (WorkloadException) after Publishing, but Success in Develop

I am setting up a monitoring workflow in Microsoft Fabric using Fabric Activator. I have created an alert based on a KQL query that monitors row ingestion. kql query -  table1 | where ingestion_ti...
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  • Izyaan_sc's avatar
    Izyaan_sc
    5 months ago

    Actually, connecting to the Mimir endpoint isn't the bottleneck here(tested using another udf and it worked in run mode). The issue appears to be specifically related to the UDF runtime failing to recognize the Prometheus library. I’ll follow your suggestion and move this to a Fabric Notebook, thanks.

v-saisrao-msft's avatar
v-saisrao-msft
Icon for Community Support rankCommunity Support
6 months ago

Hi Izyaan_sc ,

Fabric User Data Functions need to be published before invocation, and only published functions are accessible in Run mode or from other services. In Develop mode, you can test functions without publishing, but Run mode uses only the deployed version. Each function is called through its public REST endpoint, requiring a published function and correct input parameters. If the function isn’t published or the request parameters are incorrect, the invocation will fail. Make sure the function is published and the parameters are correctly structured.

Quickstart - Create a Fabric User data functions item - Microsoft Fabric | Microsoft Learn

Tutorial - Invoke user data functions from a Python application - Microsoft Fabric | Microsoft Learn

 

Thank you.