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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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Data + AI Summit 2024 - Data Engineering & Streaming

Forum Posts

DC3
by New Contributor II
  • 988 Views
  • 2 replies
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Unable to access unity catalog volume via /Volumes in notebook

I have set up a volume in unity catalog in the format catalog/schema/volume, and granted all permissions to all users on the catalog, schema and volume.From the notebook I can see the /Volumes directory in the root of the file system but am unable to...

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Latest Reply
DC3
New Contributor II
  • 0 kudos

Thanks for your comments. The problem turned out to be the compute resource not having unity catalog enabled.

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Sagas
by New Contributor II
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SparkR or sparklyr not showing history

Hi,for some reason Azure Databricks doesn't show History if the data is saved with SparkR (2 in the figure below) or Sparklyr (3), but it does show it with Data Ingestion (0) or with PySpark (1). Is this a known bug or am I doing something wrong? Is ...

Databricks_history.PNG SparkR.PNG Sparklyr.PNG
Data Engineering
sparklyr
SparkR
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Latest Reply
Kaniz_Fatma
Community Manager
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Hi @Sagas, Let’s address your questions regarding Azure Databricks, SparkR, and Sparklyr. History in Azure Databricks: Each operation that modifies a Delta Lake table creates a new table version. You can use history information to audit operation...

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patrickw
by New Contributor II
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connect timed out error - Connecting to SQL Server from Databricks

I am getting a connect timed out error when attempting to access a sql server. I can successfully ping the server from Databricks. I have used the jdbc connection and the sqlserver included driver and both result in the same error. I have also attemp...

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Latest Reply
Walter_C
Honored Contributor
  • 0 kudos

Can you run the following command in a notebook using the same cluster you are using to connect:%sh nc -vz <hostname> <port> This test will confirm us if we are able to communicate with the SQL server by using the port you are defining to connect. If...

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Phani1
by Valued Contributor II
  • 488 Views
  • 1 replies
  • 1 kudos

Job cluster configuration for 24/7

Hi Team,We intend to activate the job cluster around the clock. We  consider the following parameters regarding cost:  - Data volumes - Client SLA for job completion- Starting with a small cluster configuration Please advise on any other options we s...

  • 488 Views
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Latest Reply
Kaniz_Fatma
Community Manager
  • 1 kudos

Hi @Phani1, When configuring a job cluster for 24/7 operation, it’s essential to consider cost, performance, and scalability. Here are some recommendations based on your specified parameters: Data Volumes: Analyze your data volumes carefully. If...

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madrhr
by New Contributor III
  • 1596 Views
  • 3 replies
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Resolved! SparkContext lost when running %sh script.py

I need to execute a .py file in Databricks from a notebook (with arguments which for simplicity i exclude here). For this i am using:%sh script.pyscript.py:from pyspark import SparkContext def main(): sc = SparkContext.getOrCreate() print(sc...

Data Engineering
%sh
.py
bash shell
SparkContext
SparkShell
  • 1596 Views
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Latest Reply
madrhr
New Contributor III
  • 3 kudos

I got it eventually working with a combination of:from databricks.sdk.runtime import *spark.sparkContext.addPyFile("/path/to/your/file")sys.path.append("path/to/your")   

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NOOR_BASHASHAIK
by Contributor
  • 1341 Views
  • 3 replies
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Machine Type for VACUUM operation

Dear allI have a workflow with 2 tasks : one that does OPTIMIZE, followed by one that does VACUUM. I used a cluster with F32s driver and F64s - 8 workers (auto-scaling enabled). All 8 workers are launched by Databricks as soon as OPTIMIZE starts. As ...

NOOR_BASHASHAIK_0-1710268182562.png
Data Engineering
best practice
F series
optimize
vacuum
  • 1341 Views
  • 3 replies
  • 1 kudos
Latest Reply
ArturOA
New Contributor II
  • 1 kudos

Hi,were you able to get any useful help on this?

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PrebenOlsen
by New Contributor III
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How to migrate Git repos with DLT configurations

Hi!I want to migrate all my databricks related code from one github repo to another. I knew this wouldn't be straight forward. When I copy my code for one DLT, I get the errororg.apache.spark.sql.catalyst.ExtendedAnalysisException: Table 'vessel_batt...

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Latest Reply
PrebenOlsen
New Contributor III
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Does cloning take considerably less time then recreating the tables?Can I resume append operations to a cloned table?

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Anshul_DBX
by New Contributor
  • 578 Views
  • 1 replies
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Masking rules with Delta Sharing

Hi,We tried Delta sharing to PBI which worked fine, But facing issues while trying to apply row, column level filtering or data masking. It fails with error that its not supported.Can anyone please confirm, if delta sharing with masking rules works w...

0dcc15fc-597c-460f-b37c-1a678ef60997.jpg
  • 578 Views
  • 1 replies
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Latest Reply
Yeshwanth
Honored Contributor
  • 1 kudos

Hi @Anshul_DBX good day! The issue you are encountering is due to a limitation in Delta Sharing. As per the provided information, Delta Sharing does not support row-level security or column masks. This means that you cannot apply row and column level...

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Yohannes
by New Contributor
  • 1635 Views
  • 1 replies
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Databricks cli workflow

Is there a way that I can set up and configure a Databricks workflow job and tasks from Databricks cli or api tools by using python? Any help would be appreciated. #databricksworkflow #databricks 

  • 1635 Views
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Latest Reply
steyler-db
New Contributor III
  • 0 kudos

Hello and yes, you can set up and configure a Databricks workflow job and tasks using Databricks CLI or API tools with Python. Here are some resources and steps to guide you:   Create and run Databricks Jobs: This document: ( https://docs.databrick...

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de-hru
by New Contributor III
  • 1645 Views
  • 2 replies
  • 1 kudos

Address Validation, Correction and Enrichment with Databricks Spark Engine

Hi all!In our project, we're thinking about "Validation, Correction and Enrichment of Postal Addresses" with Databricks. For sure we'd need some kind of batch processing, because we have millions of addresses in our system.I'm aware of Address Valida...

  • 1645 Views
  • 2 replies
  • 1 kudos
Latest Reply
Sam99
New Contributor II
  • 1 kudos

Happy to help. Feel free to reach out https://www.linkedin.com/in/saleh-sultan-143ab036?utm_source=share&utm_campaign=share_via&utm_content=profile&utm_medium=android_app

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Phani1
by Valued Contributor II
  • 609 Views
  • 1 replies
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udf in databricks

Hi Team,Is there a particular reason why we should avoid using UDF and instead convert to DataFrame code?Are there any restrictions or limitations (in terms of performance or governance) when using UDFs in Databricks? Regards,Janga

  • 609 Views
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Latest Reply
Walter_C
Honored Contributor
  • 0 kudos

Hello some of the things you need to take in consideration is that:UDFs might introduce significant processing bottlenecks into code execution. Databricks uses a number of different optimizers automatically for code written with included Apache Spark...

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ande
by New Contributor
  • 690 Views
  • 1 replies
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IP address for accessing external SFTP server

I am trying to pull in data to my Databricks workspace via an external SFTP server. I am using Azure for my compute. To access the SFTP server they need to whitelist my IP address. My IP address in Azure Databricks seems to be constantly changing fro...

  • 690 Views
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Latest Reply
Walter_C
Honored Contributor
  • 0 kudos

Azure Databricks, like many cloud services, does not provide static IP addresses for outbound connections. This is because the compute resources are dynamically allocated and can change over time. One potential workaround could be to use a Virtual N...

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User15787040559
by New Contributor III
  • 23334 Views
  • 2 replies
  • 7 kudos

What's the difference between a Global view and a Temp view?

The difference between Global and Temp is how the lifetime of the view is tied to the application:http://spark.apache.org/docs/latest/api/python/reference/api/pyspark.sql.DataFrame.createOrReplaceTempView.html?highlight=createorreplacetempview#pyspar...

  • 23334 Views
  • 2 replies
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Latest Reply
ScottSmithDB
Valued Contributor III
  • 7 kudos

Correct A Temp View is scoped to the SparkSession and dropped when that session closes.  Each notebook runs in its own SparkSession.  The Global Temp View is scoped to the cluster and dropped when the cluster re-starts or you drop it. ---------------...

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sp1
by New Contributor II
  • 11792 Views
  • 7 replies
  • 4 kudos

Resolved! Pass date value as parameter in Databricks SQL notebook

I want to pass yesterday date (In the example 20230115*.csv) in the csv file. Don't know how to create parameter and use it here.CREATE OR REPLACE TEMPORARY VIEW abc_delivery_logUSING CSVOPTIONS ( header="true", delimiter=",", inferSchema="true", pat...

  • 11792 Views
  • 7 replies
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Latest Reply
Asifpanjwani
New Contributor II
  • 4 kudos

@Kaniz_Fatma @sp1 @Chaitanya_Raju @daniel_sahal Hi Everyone,I need the same scenario on SQL code, because my DBR cluster not allowed me to run python codeError: Unsupported cell during execution. SQL warehouses only support executing SQL cells.I appr...

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Hubert-Dudek
by Esteemed Contributor III
  • 8973 Views
  • 10 replies
  • 6 kudos

Databricks now supports event-driven workloads, especially for loading cloud files from external locations. This means you can save costs and resource...

Databricks now supports event-driven workloads, especially for loading cloud files from external locations. This means you can save costs and resources by triggering your Databricks jobs only when new files arrive in your cloud storage instead of mou...

ezgif-3-946af786d0
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Latest Reply
adriennn
Contributor
  • 6 kudos

@daniel_sahal I get your point, but if for a scheduled trigger you can get all kind of attributes on the trigger time (arguably, this is available for all the triggers), then why wouldn't the most important attribute of a file event not be available ...

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