[Question] - "No data to show" when trying out the sample

[Vijay-Nirmal]

Write your question here

I am trying out the Example 1 provided in the docs. I am getting No data to show - the query returned no data error. I think this is a mistake from my part rather than a bug, so I raised this issue as question.

Steps I followed

Below steps are done in latest version in Grafana Plugin website (2.3.0)

1. Set data source as Azure Data Explorer Datasource using there plugin, since I have to get actual data from ADX.
2. Used KQL to create the Example table in Grafana. Its creating proper table when using Table visualization.

   let T = datatable(app:string, target_app:string, req_rate:int)
   [
      "service a", "service b", 50,
      "service a", "service c", 75,
      "service c", "service d", 25,
   ];
   T

   

3. Set visualization to Service Dependency Graph and set the following values
   • Target Component Column Prefix as target_
   • Request Rate Column as req_rate
   • Create a new variable for dashboard and name it as aggregationType with type as constant and value as app
4. After I give Run Query, it shows No data to show - the query returned no data error

Your Setup:

• OS Grafana is running on: Windows
• OS & Browser from which Grafana is accessed: Chrome
• Plugin-Version: 2.3.0 (Small question, why the latest release in Github shows 4.0.2 but in Grafana Plugin website it shows 2.3.0)
• Grafana-Version: Grafana v7.5.2
• Datasource & Version: Azure Data Explorer Datasource

[MariusBrill]

Hi @Vijay-Nirmal ,

could you check in the query inspector if the data arrives correctly in grafana? You can see here how it works.

Greetings Marius

[Vijay-Nirmal]

When I use the latest version from the GitHub release it worked fine so I will close this issue. Anyway, thanks for the help and the wonderful plugin.