Azure blob storage trigger doesn't fire

Question

Hello there,
I set a storage blob trigger in Synapse. I registered the event grid, created the Trigger and associated it with a pipeline:

After saving the trigger the system shows me the files that match the blob path begin and end, so i know that everything is fine and correct.

As in the first image, the event is detected as soon as i create a blob in that path, but the trigger is not firing and my pipeline won't start:

Am i missing something?

Thanks

Answer 1

Hello AndreaLandi-4022,

Thanks for the question and using MS Q&A platform.

From your screenshots. I observe that you have configured Blob Path Filter

I do see the there are 4 published events & no events have come under Matched events - 4 Files have been picked up but then no files have matched the filter mentioned above. Therefore, it is not delivered to the ADF.

The below is the screenshot of the EventGrid Stats at my end.

The matched events are 3 - meaning there are 3 files matched my filter set of 4 files that have been added. The below is my filter configuration.

Any .txt file is uploaded - it will be under the matched events and delivered events - the delivered events are also zero.

Coming back to your scenario. You have configured the Blob path begins with filter :

Note : / at the end of the folder name (2018/) . You could also try adding a / at the end to your filter to get files under historical folder.

In your case, you could upload a sample file (previously uploaded file should also work) and ensure this file comes under the Data Preview . If the file doesn't appear - you will have to tweak the filter/file-folder structure to match. If there are matched events - then there will be a trigger to the ADF

Hope this will help. Please let us know if any further queries.

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Answer 2

Is your Azure subscription registered with the Event Grid resource provider?

Data Factory and Synapse pipelines natively integrate with Azure Event Grid, which lets you trigger pipelines on such events.

Also from the image you have posted your Trigger Type is BlobEventsTrigger, and it should be Storage Event?

https://learn.microsoft.com/en-us/azure/data-factory/how-to-create-event-trigger?tabs=data-factory

https://www.mssqltips.com/sqlservertip/6063/create-event-based-trigger-in-azure-data-factory/

Answer 3

Hello @Andrea Landi ,
At this time I have no doubt that the eventgrid is working fine . Can you please let me know as to have are you testing the scenario ? I think you have blob something like
abc/xxxxxta/historical . The ask is

• Are you uploading a blob with the name historical_XXXX to abc/xxxxxta/ ? If not
  can you please try that out .

I have tried a very similar sceanrio and the trigger works for me .

Also a long shot , I see that for couple of screenshot you are in the referring the branch devnXXXXX , please make sure the trigger changes are published to the master branch to see the effect .

Please do let me know how it goes .
Thanks
Himanshu

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