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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

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Hubert-Dudek
by • Esteemed Contributor III
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How much USD are you spending on Databricks?

Join two system tables and get exactly how much USD you are spending.The short version of the query: SELECT u.usage_date, u.sku_name, SUM(u.usage_quantity * p.pricing.default) AS total_spent, p.currency_code FROM system.billing....

system_pig.png
Data Engineering
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jose_gonzalez
Databricks Employee
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Thank you for sharing this information @Hubert-Dudek 

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Fresher
by • New Contributor II
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Query is taking too long to run

I have two clusters. Cluster A(spark cluster) and cluster B(SQL warehouse). whenever I try to run a particular query using cluster B, it works fine but whenever I try to run same query using cluster A. It's taking time and never show the output

Data Engineering
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jose_gonzalez
Databricks Employee
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Check the physical query plan of the query you are running. Also, check the Spark UI to identify where is taking time and why.

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shanebo425
by • New Contributor III
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Databricks OutOfMemory error on code that previously worked without issue

I have a notebook in Azure Databricks that does some transformations on a bronze tier table and inserts the transformed data into a silver tier table. This notebook is used to do an initial load of the data from our existing system into our new datal...

Data Engineering
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jose_gonzalez
Databricks Employee
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Please review your Spark UI from the old job execution versus the new job execution. You might need to check if the data volume has increase and that could be the reason of the OOM

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Phani1
by • Valued Contributor II
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Execute Pyspark cells concurrently

Hi Team,Hi Team,Is it feasible to run pyspark cells concurrently in databricks notebooks? If so, kindly provide instructions on how to accomplish this. We aim to execute the intermediate steps simultaneously.The given scenario entails the simultaneou...

Data Engineering
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PrashantAghara
by • New Contributor II
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org.apache.spark.SparkException: Job aborted due to stage failure when writing to Cosmos

I am writing data to cosmos DB using Python & Spark on DatabricksI am getting below error :org.apache.spark.SparkException: Job aborted due to stage failure: Authorized committer (attemptNumber=0, stage=192, partition=105) failed; but task commit suc...

Data Engineering
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PrashantAghara
New Contributor II
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The configs are for cluster:Worker Type & Driver type : Standard_D16ads_v5RUs for Cosmos : 1.5L

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DC3
by • New Contributor II
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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...

Data Engineering
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DC3
New Contributor II
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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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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 ...

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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...

Data Engineering
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Walter_C
Databricks Employee
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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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madrhr
by • New Contributor III
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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
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madrhr
New Contributor III
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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
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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
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ArturOA
New Contributor III
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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...

Data Engineering
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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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Phani1
by • Valued Contributor II
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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...

Data Engineering
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Anshul_DBX
by • New Contributor
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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
Data Engineering
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Yeshwanth
Databricks Employee
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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
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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 

Data Engineering
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steyler-db
Databricks Employee
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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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