Hi @Devlin, Gannon ,
Welcome to Microsoft Q&A platform and thanks for posting your question.
I understand your query is related to billing of the Dataflow execution.
Debug executions from pipelines and data preview debugging will continue to use the debug settings which has a preset TTL of 60 minutes.
- If you set a TTL, ADF will maintain a pool of VMs which can be utilized to spin-up each subsequent data flow activity against that same Azure IR. This reduces the amount of time needed to start-up the environment before your job is executed.
- ADF will maintain that pool for the TTL time after the last data flow pipeline activity executes. Note that this will extend your billing period for a data flow to the extended time of your TTL. However, your data flow job execution time will decrease because of the re-use of the VMs from the compute pool. The compute resources are not provisioned until your first data flow activity is executed using that Azure IR.
- For more specialized assistance on this, I recommend you to create a billing support ticket which is free of cost. The ticket enables you to work closely with the support engineers and get a quick resolution to your issue.
You can also contact Azure Billing/subscription support, which is free, and it's the best choice for your scenario.
If you have questions or need help on how to create a support request, here are the steps to create support case: How to create a support ticket for Azure billing and subscription issues and OR Call to Global Customer Service phone numbers.
Hope this will help. Please let us know if any further queries.
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