Merge pull request #270161 from MicrosoftDocs/repo_sync_working_branch

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Author: Saisang

articles/stream-analytics/machine-learning-udf.md

@@ -54,6 +54,9 @@ The following table describes each property of Azure Machine Learning Service fu
 
 When your Stream Analytics query invokes an Azure Machine Learning UDF, the job creates a JSON serialized request to the web service. The request is based on a model-specific schema that Stream Analytics infers from the endpoint's swagger.
 
+> [!WARNING]
+> Machine Learning endpoints aren't called when you're testing with the Azure portal query editor because the job isn't running. To test the endpoint call from the portal, the Stream Analytics job needs to be running.  
+
 The following Stream Analytics query is an example of how to invoke an Azure Machine Learning UDF:
 
 ```SQL