Adding a job with a "maxParallelTasks" parameter greater than zero causes an error: Forbidden

[oleg-babintsev]

Problem Description

Adding a job with a "maxParallelTasks" parameter greater than zero causes an error: Forbidden
Reason: Property maxParallelTasks is not enabled for current account

Documentation has no information about any limitations: https://docs.microsoft.com/en-us/rest/api/batchservice/job/add#request-headers

Additional Logs

...
azure.batch.models._models_py3.BatchErrorException: Request encountered an exception.
Code: Forbidden
Message: {'additional_properties': {}, 'lang': 'en-US', 'value': 'Access is Forbidden\nRequestId:d49b9b23-1a78-42d5-a00d-b4037e5fb441\nTime:2022-02-22T10:57:57.6311327Z'}
Reason: Property maxParallelTasks is not enabled for current account

[dpwatrous]

Thanks for pointing this out. The maxParallelTasks property is currently enabled for specific accounts only. It also requires enableInterNodeCommunication to be set to true, which is part of the reason it isn't enabled everywhere yet. We'll work on updating the documentation to make this less confusing.

If you would like to enable it for an account, please submit a support request using the "New Support Request" option on the Batch account in the Azure Portal.

[dpwatrous]

On second thought, I'll leave this issue open until we have the documentation update in place.