Forum Discussion
Memorable MemberQuestion about internal bugs in "notebookUtils" "mount operation" for default lakehouse
Hi dbeavon3 ,
Thank you for bringing this issue to our attention. We have investigated the matter and verified that it is not a known issue at this time.
We apologize for the inconvenience and understand your frustration. Unfortunately, we cannot escalate this to the support team directly.
If you still face the issue then please consider raising a support ticket for further assistance.
To raise a support ticket for Fabric and Power BI, kindly follow the steps outlined in the following guide:
How to create a Fabric and Power BI Support ticket - Power BI | Microsoft Learn
Thankyou for your Paitence and understanding.
Community SupportHi dbeavon3 ,
Thank you for bringing this issue to our attention. We have investigated the matter and verified that it is not a known issue at this time.
We apologize for the inconvenience and understand your frustration. Unfortunately, we cannot escalate this to the support team directly.
If you still face the issue then please consider raising a support ticket for further assistance.
To raise a support ticket for Fabric and Power BI, kindly follow the steps outlined in the following guide:
How to create a Fabric and Power BI Support ticket - Power BI | Microsoft Learn
Thankyou for your Paitence and understanding.
Memorable MemberHi V-yubandi-msft
Thanks for the reply.
Do you mean it is not known to customers, or is not known to Mindtree (ICM's/SR's), or is not known to this Microsoft PG, or has not been published to the "known issues" list?
I am not sure I know what you mean, but I will go ahead and give you the benefit of the doubt. The ticket is reported here:
TrackingID#2501220040016849.
... but I was under the impression that I'm (at least) the tenth customer to report this bug. It seems extremely unlikely that these file-system mounting bugs are not known to the PG. In fact, it appears they already implemented 3 retries to try to avoid the bug:
In my experience the various PG's of Fabric will typically expect their customers to be the ones who own responsibilty for implementing all these "retries". But when a PG agrees to perform these retries in their own code, then you can be 100% certain that they are very familiar with the underlying bugs.
I also want to point out how unexpectedly this issue can arise. Out of thirty notebooks running in a loop, one of them might have a mounting issue like so:
Side note: I want to put these message here once more to make sure they appear in search results:
2025-01-22 08:29:55,625 INFO notebookUtils [pool-52-thread-1]: [checkDriverNodeMountStatus] operationId: 10c731d8-bdf8-4a86-a977-926f9d9cf7ee check driver node cost 30116ms, key:lakehousemounts_vm-ae003372_/default/Files/, result: timeout
2025-01-22 08:29:55,627 INFO notebookUtils [pool-52-thread-1]: Rollback the operation 10c731d8-bdf8-4a86-a977-926f9d9cf7ee due to mount /default/Files failed.
2025-01-22 08:29:55,736 INFO notebookUtils [pool-52-thread-2]: [checkDriverNodeMountStatus] operationId: a42ced8c-b6df-4623-8ab5-80c6b579ed2a check driver node cost 30103ms, key:lakehousemounts_vm-ae003372_/default/Tables/, result: timeout
2025-01-22 08:29:55,737 INFO notebookUtils [pool-52-thread-2]: Rollback the operation a42ced8c-b6df-4623-8ab5-80c6b579ed2a due to mount /default/Tables failed.
- V-yubandi-msft
Hi dbeavon3 ,
Thank you for reaching out and sharing your concerns. We understand that this issue can be frustrating, and we sincerely apologize for any inconvenience it has caused.
Although we do not have direct access to track internal tickets, the support team is responsible for managing the raised ticket and prioritizing cases accordingly. We appreciate you bringing this to our attention.
Thank you for your patience and understanding.
Regards,
Yugandhar.
- dbeavon3
Hi V-yubandi-msft
I've noticed that the community is filled with responses from "community support" in the format you shared.
"Thanks"... "We understand"... "We apologize", ... "We appreciate"... "Please contact support".
This is pointless noise to add to the community forums, that are already noisy enough as it is.OF COURSE I'm contacting support, but I'm also trying to communicate about the fabric bugs in the community, since Microsoft never shares any public information about their bugs. It is very likely that a dozen other customers are impacted by the same bugs, and are hoping to find meaningful support here. However if they see your response (1 week or 1 month or 1 year from now) they will gain absolutely nothing from it, as you can probably understand. Please be patient while I wait for Mindtree to offer us some meaningful support for these bugs.
- V-yubandi-msft
Hi dbeavon3 ,
We are unable to track support tickets directly. The support team is in charge of managing the raised tickets and prioritizing cases as needed. We trust that you understand the situation clearly.
Regards,
Yugandhar.