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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

Shivanshu_
by • Contributor
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  • 4 replies
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parallelizing function call in databricks

I have a use case where I have to process stream data and have to create categorical table's(500 table count). I'm using concurrent threadpools to parallelize the whole process, but while seeing the spark UI, my code dosen't utilizes all the workers(...

Data Engineering
parallelism
threading
threadpool executor
  • 6241 Views
  • 4 replies
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Latest Reply
jose_gonzalez
Databricks Employee
  • 3 kudos

You can use DLT, read from many-to-one table.

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Fnazar
by • New Contributor II
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Streaming live table

I am trying to create a streaming live table using the below syntax : CREATE OR REFRESH STREAMING LIVE TABLE revenue_stream AS (SELECT * FROM stream (finance_silver.finance_db.revenue)) And as I am trying to execute this notebook via DLT pipeline i a...

Fnazar_0-1706699205272.png
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jose_gonzalez
Databricks Employee
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You can use materialized views in serverless only

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FurqanAmin
by • New Contributor II
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Spark Logs inaccessible - from the UI and dbfs (GCS)

We have a lot of jobs with spark-submit tasks, previously we were able to see the logs for the jobs. Now we are not able to see the logs in the DBX UI.We created a test job for this 'test_job_2' in our workspace to test it out. When the job finishes ...

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Yeshwanth
Databricks Employee
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@FurqanAmin Could you please attach a screenshot of this?

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OvZ
by • New Contributor III
  • 41562 Views
  • 13 replies
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Resolved! Is it possible to disable jdbc/odbc connection to (azure) databrick cluster

Hi,I wanna know if it is possible to disable jdbc/odbc connection to (azure) databrick cluster.So know (download) tools could connect this way ? Thz in adv,Oscar

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wdphilli
Databricks Partner
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Hi @OvZ & @LandanG, as a point of clarification, the script provided is intended to be run in a notebook first. After running the below in a notebook, it creates the init script at the location "dbfs:/databricks/init_scripts/disable_jdbc_odbc.conf" %...

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deepak05
by • Contributor
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Resolved! I Got 70.00% on Databricks Certified Data Engineer Professional Exam but Failed....

Hi Everyone,Today I gave databricks exam for and I got 64 questions and my result was exactly 70.00%(As per databricks the pass percentage is 70 or above). but still the status was showing Failed and I couldn't get certified.Can you anyone help me on...

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____
Databricks Partner
  • 11 kudos

Same story and get the same reply from supportI cant even determine how far I am to the passing scoretelling u fail, then u failed

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manohar3
by • New Contributor III
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Resolved! spark databricks jdbc driver integration return rows having column names as values

Hi all,i am using below to code to query table but query returns rows having column names as valuesspark.read .format("jdbc") .option("url", "jdbc:databricks://acme.cloud.databricks.com:443/myschema;transportMode=http;ssl=1;httpPath=<httppath>;Au...

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manohar3
New Contributor III
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This seems to be issue with spark and was able to fix issue by following postshttps://stackoverflow.com/questions/47020379/bigquery-simba-jdbc-error-with-sparkhttps://stackoverflow.com/questions/68013347/how-to-register-a-jdbc-spark-dialect-in-python...

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Yoni
by • New Contributor
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Resolved! MLFlow failed: You haven't configured the CLI yet

I'm getting an errorYou haven’t configured the CLI yet! Please configure by entering `/databricks/python_shell/scripts/db_ipykernel_launcher.py configure`My cluster is running Databricks Runtime Version 10.1I've also installed mlflow to the cluster l...

  • 18662 Views
  • 5 replies
  • 3 kudos
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HemantKumar
New Contributor II
  • 3 kudos

dbutils.library.restartPython()Add that after you run the pip install mlflow, it worked for me in a non-ML cluster

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DumbBeaver
by • New Contributor II
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  • 2 replies
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Resolved! ERROR: Writing to Unity Catalog from Remote Spark using JDBC

This is my code here. df = spark.createDataFrame([[1,1,2]], schema=['id','first_name','last_name'])(df.write.format("jdbc")     .option("url",  <jdbc-url>)    .option("dbtable","hive_metastore.default.test")    .option("driver", "com.databricks.clien...

  • 3673 Views
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feiyun0112
Honored Contributor
  • 1 kudos

 %scala import org.apache.spark.sql.jdbc.{JdbcDialect, JdbcDialects} JdbcDialects.registerDialect(new JdbcDialect() { override def canHandle(url: String): Boolean = url.toLowerCase.startsWith("jdbc:databricks:") override def quoteIde...

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Azure_Data_Bric
by • New Contributor III
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  • 6 replies
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Historical Data Clean-up from Silver tables

Hi Everyone,I need your help/suggestion.We are using a DLT framework for our ELT process, data is received from the Source to the RAW layer in parquet format. This raw data is loaded to the Bronze layer which acts like a history table. From the BRONZ...

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  • 6 replies
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Azure_Data_Bric
New Contributor III
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Hi,I see Optimize and VACUUM are running on all tables once per day automatically.that day when we performed historical deletion, we deleted the data first, and then we just ran VACUUM with zero hour retention. After some time Optimize and VACUUM (wi...

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CloudPlatformer
by • New Contributor II
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Npip Tunnel Setup Failure

Hi everyone,I'm currently running into an issue when trying to create any type of compute cluster in a workspace (premium, with VNet Injection and private DNS zone + private Endpoint). The operation always fails with: Compute terminated. Reason: Npip...

  • 4523 Views
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CloudPlatformer
New Contributor II
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I forgot to add: the workspace as well as the other resources are hosted in Azure.

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Etyr
by • Contributor II
  • 3501 Views
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Can not connect to databricks on Azure Machine Learning Compute Cluster.

Hello,I'am having an issue where I have :A local machine in WSL 1,Python 3.8 and 3.10OpenJDK 19.0.1 (version "build 19.0.1+10-21")Compute Instance In Azure Machine LearningPython 3.8OpenJDK 8 (version "1.8.0_392")Compute Cluster in Azure Machine Lear...

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Etyr
Contributor II
  • 0 kudos

Additional information I forgot to write.Compute Instance has a User managed Identity in Azure, a Service Principal access is created in databricks with its Application ID. Same with the compute cluster, it has its own User Managed Identity that is a...

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learning_1989
by • New Contributor II
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You have json file which is nested with multiple key value pair how you read it in databricks?

You have json file which is nested with multiple key value pair how you read it in databricks?

  • 3500 Views
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Lakshay
Databricks Employee
  • 1 kudos

You should be able to read the json file with below code. val df = spark.read.format("json").load("file.json") After this you will need to use the explode function to add columns to the dataframe using the nested values.

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RKNutalapati
by • Valued Contributor
  • 6344 Views
  • 3 replies
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How to use Oracle Wallet to connect from databricks

How to onnect Databricks to Oracle DAS / Autonomous Database using a cloud wallet, What are the typical steps and best practices to follow. Appreciate an example code snippet for connecting to the above data source

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Latest Reply
RKNutalapati
Valued Contributor
  • 0 kudos

 Followed below steps to build the connection.Unzip Oracle Wallet objects and copy them to a secure location accessible by your Databricks workspace.Collaborate with your Network team and Oracle Autonomous Instance Admins to open firewalls between yo...

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Snentley
by • New Contributor II
  • 2397 Views
  • 1 replies
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Free Voucher for Data Engineering Associate Certification

Could you please inform me which specific webinar participation might grant eligibility for a certification exam voucher? Additionally, I would like to know whether this voucher would cover the full cost of the certification exam or only a partial am...

  • 2397 Views
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Kiv9
New Contributor II
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Did you get any response on this  

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