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Data Engineering
Join discussions on data engineering best practices, architectures, and optimization strategies within the Databricks Community. Exchange insights and solutions with fellow data engineers.
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Forum Posts

Orianh
by Valued Contributor II
  • 10285 Views
  • 4 replies
  • 3 kudos

function does not exist in JVM ERROR

Hello guys, I'm building a python package that return 1 row from DF at a time inside data bricks environment.To improve the performance of this package i used multiprocessing library in python, I have background process that his whole purpose is to p...

function dont exist in JVM error.
  • 10285 Views
  • 4 replies
  • 3 kudos
Latest Reply
dineshreddy
New Contributor III
  • 3 kudos

Using thread instead of processes solved the issue for me

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Anonymous
by Not applicable
  • 2945 Views
  • 2 replies
  • 1 kudos

Delta Tables copying

Hello, I’m trying to copy a table with all it’s versions to unity catalog, I know I can use deep cloning but I want the table with the full history, is that possible?

  • 2945 Views
  • 2 replies
  • 1 kudos
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bikash84
New Contributor III
  • 1 kudos

To copy history, you would have to copy files along with the delta log folder and then create a delta table on that location

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Kunda
by New Contributor III
  • 1411 Views
  • 1 replies
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Resolved! Welcome

Welcome!

  • 1411 Views
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Latest Reply
Kunda
New Contributor III
  • 0 kudos

Welcome!

  • 0 kudos
Anonymous
by Not applicable
  • 5344 Views
  • 2 replies
  • 0 kudos

databricks view question!

I found this phrase in the document "A view stores the text for a query type again one or more data sources or tables in the metastore."Does "view" in databricks store data in a physical location?

  • 5344 Views
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Anonymous
Not applicable
  • 0 kudos

CREATE VIEW | Databricks on AWS - Constructs a virtual table that has no physical data based on the result-set of a SQL query.

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PraveenKarnam
by New Contributor II
  • 941 Views
  • 0 replies
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Set up RBACs with hive catalog

Hello, we are not on unity catalog yet due to limitations on multi cloud implementation of UC. We still want to implement Role Based Acess Control with hive metastore. We are using DBR 11.3. Any pointers will be helpful 

  • 941 Views
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Serhii
by Contributor
  • 2870 Views
  • 3 replies
  • 1 kudos

Could not launch jobs due to node_type_id (instance) unavailability

I am running hourly job on a cluster using p3.2xlarge GPU instance, but sometimes cluster couldn't start due to instance unavailability. I wander is there is any fallback mechanism to, for example, try a different instance type if one is not availabl...

  • 2870 Views
  • 3 replies
  • 1 kudos
Latest Reply
abagshaw
Databricks Employee
  • 1 kudos

 (AWS only) For anyone experiencing capacity related cluster launch failures on non-GPU instance types, AWS Fleet instance types are now GA and available for clusters and instance pools. They help improve chance of successful cluster launch by allowi...

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Anonymous
by Not applicable
  • 1778 Views
  • 1 replies
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Instance type in Photon

Can Photon run on all instance/VM types?

  • 1778 Views
  • 1 replies
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Latest Reply
abagshaw
Databricks Employee
  • 0 kudos

No, Photon is only supported on a limited set of instance types where it's been benchmarked and tested by Databricks to have optimal performance.

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JPKC
by New Contributor
  • 2913 Views
  • 3 replies
  • 1 kudos

Support for multiple EC2 instance types in a worker pool

As per this thread Databricks now integrates with EC2 CreateFleet API that allows customers to create Databricks pools and get EC2 instances from multiple AZs and multiple instance families & sizes. However, in the Databricks UI you can not select mo...

  • 2913 Views
  • 3 replies
  • 1 kudos
Latest Reply
abagshaw
Databricks Employee
  • 1 kudos

Fleet instances on Databricks is now GA and available in all AWS workspaces - you can find more details here: https://docs.databricks.com/compute/aws-fleet-instances.html

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umair_hanif
by New Contributor II
  • 3399 Views
  • 2 replies
  • 1 kudos

Ingesting more than 7 million rows into a SQL Server Table

Hi All, I hope you're super well. I need your recommendations and solution for my problem.I am using a Databricks instance DS12_v2 which has 28GB RAM and 4 cores. I am ingesting 7.2 million rows into a SQL Server table and it is taking 57 min - 1 hou...

  • 3399 Views
  • 2 replies
  • 1 kudos
Latest Reply
Anonymous
Not applicable
  • 1 kudos

You can try to use BULK INSERT.https://learn.microsoft.com/en-us/sql/t-sql/statements/bulk-insert-transact-sql?view=sql-server-ver16Also using Data Factory instead of Databricks for the copy can be helpful.

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verargulla
by New Contributor III
  • 4749 Views
  • 4 replies
  • 7 kudos

Databricks Academy content for Azure Databricks Customers

Hi! We've recently provisioned an Azure Databricks workspace and started building our pipelines. Do we qualify as Databricks 'customers' who have free access to all self-paced content on Databricks Academy? If so, how do we access it? We don't have a...

  • 4749 Views
  • 4 replies
  • 7 kudos
Latest Reply
fpasid
New Contributor II
  • 7 kudos

They changed the registration process and added 'Additional Fields' section, where you can provide your company email address, that you use in Azure Databricks. This worked automatically for me and I can access the self-paced trainings for free now.

  • 7 kudos
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chandan_a_v
by Valued Contributor
  • 11569 Views
  • 2 replies
  • 5 kudos

How to restart the Spark session within the notebook without reattaching the notebook?

Hi All,I want to run an ETL pipeline in a sequential way in my DB notebook. If I run it without resetting the Spark session or restarting the cluster I am getting a data frame key error. I think this might be because of the Spark cache because If I r...

  • 11569 Views
  • 2 replies
  • 5 kudos
Latest Reply
Anonymous
Not applicable
  • 5 kudos

Is there a solution to the above problem? I also would like to restart SparkSession to free my cluster's resources, but when callingspark.stop()the notebook automatically detach and the following error occurs:The spark context has stopped and the dri...

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