Welcome to Microsoft Q&A and thank you for reaching out.
Recently a new pipeline consumption report has been released for ADF. Using this report you can get immediate insights into the ADF units consumed from pipelines during debug and triggered pipeline runs to make it easy to estimate your utilization.
Please refer to: New ADF pipeline consumption report
Also please refer to below docs for understanding ADF pricing:
To know about the user who activated the debug run, please click on play button on top right corner of ADF UI
Hope this helps.
Thank you
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