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Administration & Architecture
Explore discussions on Databricks administration, deployment strategies, and architectural best practices. Connect with administrators and architects to optimize your Databricks environment for performance, scalability, and security.
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Forum Posts

RakeshRoy
by New Contributor II
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Community Accounts Getting Deleted Automatically

This is the second time in the same week, the accounts are getting vanished without any prior information. All the saved work has no backup I guess and no one would take responsibility because it a community version.Not a good thing to happen twice, ...

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Walter_C
Databricks Employee
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I would suggest to follow steps in https://community.databricks.com/t5/support-faqs/databricks-community-sso-august-3rd-2024/ta-p/78459 , if issue persist please contact databricks-community@databricks.com 

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udhayakumar
by New Contributor
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Account missing

I have been using my community for the past two weeks. Now, while trying to log in, it shows this: Can anyone help me fix this? Thanks in advance! 

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Advika_
Databricks Employee
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Hello, @udhayakumar!You can find helpful resources for Databricks Community Edition here. If the available resource doesn’t resolve your concern, please submit a ticket with Databricks Support team for further assistance.

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sdheepak
by New Contributor II
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Databricks SQL Warehouse Hung - Queries Stuck in Queued State & No Alerts Triggered

We have been facing critical challenges with Databricks SQL Warehouse for the last four weeks. We are using Databricks SQL Warehouse injection from IICS, and we have observed the following issues:SQL Warehouse Going into a Hung State – The SQL Wareho...

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Isi
Honored Contributor II
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Hey @sdheepak The first thing you need to identify is the type of SQL Warehouse you are using in Databricks:• Is it Serverless? If so, it is fully managed by Databricks, and you must contact Databricks support because you won’t have access to logs in...

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songhan89
by New Contributor
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Why is writing direct to Unity Catalog Volume slower than to Azure Blob Storage (xarray -> zarr)

Hi,I have some workloads whereby i need to export an xarray object to a Zarr store.My UC volume is using ADLS.I tried to run a simple benchmark and found that UC Volume is considerably slower.a) Using a fsspec ADLS store pointing to the same containe...

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Administration & Architecture
Unity Catalog
Volume
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satniks_o
by New Contributor III
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Can we provide custom dns name for Databricks app?

Hi All,I want to access my Databricks app https://myapp.aws.databricksapps.com/ using https://myapp.mycompaney.com  Is this possible? We tried DNS mapping but it is not working.  

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Alberto_Umana
Databricks Employee
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Hello @satniks_o , It should be possible to set up a DNS but requires SSL and other settings, how are you setting it up?

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marc88
by New Contributor II
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why doesn't databricks allow setting executor metrics

I have an all-purpose compute cluster that processes different data sets for various jobs. I am struggling to optimize executor metrics like below.spark.executor.memory 4gIs it allowed to override default executor metrics and specify such configurati...

Administration & Architecture
clusterConfiguration
executorMetrics
fatExecutorProblem
performanceOptimization
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Alberto_Umana
Databricks Employee
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Hello @marc88, As you mentioned in Spark config under Advance cluster options you can do it once cluster boots up it will be set at run level. Or you can draft a cluster policy and apply it across for job computes when creating your workflow.

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jx1226
by New Contributor III
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Cross-tenant networking two orgs on Azure

Hi Databricks Community,For one client, we are looking for best practices, steps to establish cross-tenant networking and landing zones between two organizations. The current situation is that the source systems are in one organization, while the Azu...

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NandiniN
Databricks Employee
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Cross posting https://community.databricks.com/t5/administration-architecture/databricks-azure-cross-tenant-connection-to-storage-account/td-p/82491#:~:text=I%20tested%20the%20connection%20to,when%20tested%20from%20this%20VM. 

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MarcoRezende
by New Contributor II
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It's possible to sync account group/user to workspace without the need to do it manually?

I am using Databricks SCIM for my Databricks Account, so when i add a user or group in the SCIM connector, the user or group its created in Databricks Account. After this, i need to manually assign the user/group to the workspaces. My boss wants to o...

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saurabh18cs
Honored Contributor II
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Hi , I agree with @Rjdudley EntraID groups are better 

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Mihai_LBC
by New Contributor II
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Resolved! Table size information display

Hi,I have a problem with displaying information about the size of my tables.This information is visible several times, but after a while it disappears again.I need to undestand what is happen, and why this information is not available all the time on...

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JakubSkibicki
Contributor
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In general you need a cluster or warehouse to be active for those detail to be presented.   

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axelboursin
by New Contributor II
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Need to create an Identity Federation between my Databricks workspace/account and my AWS account

Hello,I need to set up an identification between my Databricks workspace/account and my AWS account, where Databricks is already deployed.The goal is to make an easy authentification without access and secret keys.So I thought that OIDC will be the s...

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dbuserng
by New Contributor II
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Driver: how much memory is actually available?

I have a cluster where Driver type is Standard_DS3_v2 (14GB Memory and 4 Cores). When I use free -h command in Web terminal (see attached screenshot) I get the response that I only have 8.9GB memory available on my driver - why is that?fyi, spark.dri...

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Sidhant07
Databricks Employee
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Hi @dbuserng , The free -h command in the web terminal shows only 8.9GB of available memory on your driver, which is a Standard_DS3_v2 instance with 14GB of memory, because Databricks has services running on each node. This means the maximum allowabl...

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dbuserng
by New Contributor II
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JVM Heap Memory Graph - more memory used than available

I'm analyzing the memory usage of my Spark application and I see something strange when checking JVM Heap Memory Graph (see screenshot below). Each line on the graph is representing one executor.Why the memory usage sometimes reaches over 10GB, when ...

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Sidhant07
Databricks Employee
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Hi @dbuserng , The memory usage in your Spark application can exceed the spark.executor.memory setting of 7GB for several reasons: • Off-Heap Memory Usage: Spark allows for off-heap memory allocation, which is not managed by the JVM garbage collector...

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sruthianki
by New Contributor II
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photon is being used by a job or not

We have lots of customers using many job as well as interactive clusters with photon enabled which is drastically increasing the cost .We would like to know if there is any table in system or any details that we can get through API that lists if the ...

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Sidhant07
Databricks Employee
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Hi @sruthianki , If you want to check if the job is really using photon or not you can check the SQL query plan in spark UI for its stages and the metrics will highlighted in yellow colour.

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Kroy
by Contributor
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How to Know DBU consumption in azure databricks ?

In Azure portal - Billing we can get the COST but how to know How much DBU is consumed ?

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odoll
New Contributor II
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There was a promo on serverless early 2024 at the time which at some point got extended, and was bigger depending where you were.

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Veilraj
by New Contributor II
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Configuration of NCC for Serverless to access SQL server running in a Azure VM

Hi Team, I am following this link to configure NCC for a Serverless compute to access a SQL Server running in a Azure VM. https://learn.microsoft.com/en-us/azure/databricks/security/network/serverless-network-security/This references to adding privat...

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shhhhhh
New Contributor III
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also interested in doing this.  Have federated queries for Classic Databricks cluster pointing to SQL server, but can't find documentation for Serverless plane connecting to SQL server on a VM

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