Failing to install a library from dbfs mounted storage (adls2) with pass through credentials cluster

[alonisser]

We've setup a premium workspace with passthrough credentials cluster , while they do work and access my adls gen 2 storage

I can't make it install a library on the cluster from there. and keeping getting

"Library installation attempted on the driver node of cluster 0522-200212-mib0srv0 and failed. Please refer to the following error message to fix the library or contact Databricks support. Error Code: DRIVER_LIBRARY_INSTALLATION_FAILURE. Error Message: com.google.common.util.concurrent.UncheckedExecutionException: com.databricks.backend.daemon.data.client.adl.AzureCredentialNotFoundException: Could not find ADLS Gen2 Token

"

How can I actually install a "cluster wide" library? on those passthrough credentials clusters

(The general adls mount is using those credentials to mount the data lake)

This happens on both standard and high concurrency clusters

[Kaniz_Fatma]

Hi @Alon Nisser​ , Here is a similar issue on S.O. Please let us know if that helps.

[alonisser]

Nope @Kaniz Fatma​ it's not actually my question, I know how to install a library on a cluster and do it quite a lot. the question is how to install a library stored on the data lake (via dbfs wheel) for a "pass credentials" cluster

[Kaniz_Fatma]

Hi @Alon Nisser​ , Thank you for the clarification. I might have misinterpreted the question.

[alonisser]

I currently got a hack, of copying the library from the data lake to root dbfs. and from there . but I don't like it

[Kaniz_Fatma]

Hi @Alon Nisser​ , I'm glad you got a hack for the time being, and thank you for sharing it on our platform. Can you tell us the reason for your dissatisfaction with it?

[nancy_g]

Hi @Kaniz Fatma​ Even I am facing the same issue. I am trying to use job cluster with credential passthrough enabled to deploy a job but library installation fails with the same exception:

"Message: com.google.common.util.concurrent.UncheckedExecutionException: com.databricks.backend.daemon.data.client.adl.AzureCredentialNotFoundException: Could not find ADLS Gen2 Token"

Where to add the token? or am I missing something?

[alonisser]

@Nancy Gupta​ , As far as I can trace this issue, it's about the token isn't set up yet when the cluster is starting; I assume it does work with pass-through credentials after starting the collection regularly?

My hack was to copy the library to the root dbfs (I've created a new folder there) using another group, and then install from this place does work

[Kaniz_Fatma]

Hi @Nancy Gupta​ , Were you able to replicate the solution provided by @Alon Nisser​ ?

[nancy_g]

@Kaniz Fatma​ , yes but that is just a workaround and it would be great if I can get a solution for this!

Also again in the job for any read from adls, it fails again with the same error.

[nancy_g]

@Kaniz Fatma​ , any solutions pls?

[Kaniz_Fatma]

Hi @Nancy Gupta​,

By design, it is a limitation that the ADF-linked service access token will not be passed through the notebook activity. It would help if you used the credentials inside the notebook activity or key vault store.

 

Reference: ADLS using AD credentials passthrough – limitations.

Hope this helps. Do let us know if you any further queries.

[Kaniz_Fatma]

Hi @Nancy Gupta​ ​, We haven’t heard from you on the last response from me, and I was checking back to see if you have a resolution yet. If you have any solution, please share it with the community as it can be helpful to others. Otherwise, we will respond with more details and try to help.

[User16764241763]

Hello @Alon Nisser​ @Nancy Gupta​ 

Installing libraries using passthrough credentials is currently not supported

You need below configs on the cluster

fs.azure.account...

https://docs.microsoft.com/en-us/azure/databricks/data/data-sources/azure/adls-gen2/azure-datalake-g...

We can file a feature request for this.

[alonisser]

Sorry I can't figure this out, the link you've added is irrelevant for passthrough credentials, if we add it the cluster won't be passthrough, Is there a way to add this just for a specific folder? while keeping passthrough for the rest?