Copy activity SFTP is triggering twice on file create event

[P_work]

A trigger that is set to trigger when a file is created in the Lakehouse triggers twice  when the file is create with Copy SFTP activity. What would be needed to have trigger fire once? Note, uploading a file works as expected.

[P_work]

Option 2 worked as expected.

[v-venuppu]

Hi @P_work ,

May I ask if you have resolved this issue? Please let us know if you have any further issues, we are happy to help.

Thank you.

[v-venuppu]

Hi @P_work ,

Thank you for your Response. Please let us know if you have any further issues?

Thank you.

[P_work]

I will try the solutions, as the staging folder sounds feasible. However, the event details of the trigger show the subject to be the filename duplicated, not a .tmp file.  Option 2 still holds promise.

[v-venuppu · Accepted solution]

Hi @P_work ,

Thank you for reaching out to Microsoft Fabric Community.

Your trigger fires twice because the Copy activity creates temp files first, then renames them. each counts as a "file created" event.

Set the trigger to fire only on final files by:

1. Filtering by file extension (e.g., .csv, not .tmp)

OR

2. Copy to a staging folder, then move the completed file to the monitored folder.

This ensures the trigger fires only once per actual file.

If this post helps, then please consider Accepting as solution to help the other members find it more quickly.

Thank you.