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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

Phani1
by Databricks MVP
  • 6612 Views
  • 2 replies
  • 2 kudos

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...

  • 6612 Views
  • 2 replies
  • 2 kudos
Latest Reply
NandiniN
Databricks Employee
  • 2 kudos

Databricks also supports executing SQL cells in parallel. While a command is running and your notebook is attached to an interactive cluster, you can run a SQL cell simultaneously with the current command. The SQL cell is executed in a new, parallel ...

  • 2 kudos
1 More Replies
CM2
by New Contributor
  • 4313 Views
  • 1 replies
  • 0 kudos

Data transfer from AWS/Databricks to GEO repository via FTP

Does anyone have a Python script that runs in Databricks to transfer RNAseq data stored in AWS bucket to a public repository (GEO)? All my attempts failed, it looks like the connection between dbx and geo isn't working as expected.

  • 4313 Views
  • 1 replies
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Latest Reply
NandiniN
Databricks Employee
  • 0 kudos

What is the exact error that you face? We can debug from there. I see there are some steps shared on GEO submissions https://www.ncbi.nlm.nih.gov/geo/info/submissionftp.html   

  • 0 kudos
drag7ter
by Contributor
  • 5117 Views
  • 1 replies
  • 0 kudos

Bootstrap cluster timeout for job pipeline - databricks bug?

From time to time we have these erors in scheduled PROD runs. It happens when job starts and tries to create one time cluster. It happens 1 time from 10-20 runs and we are not able to identify the root cause, as all network connectivity is fine, some...

  • 5117 Views
  • 1 replies
  • 0 kudos
Latest Reply
NandiniN
Databricks Employee
  • 0 kudos

The error message "BOOTSTRAP_TIMEOUT (SERVICE_FAULT)" indicates that the cluster was terminated because it took too long to initialize. This can happen due to various reasons, including network connectivity issues between the data plane and the contr...

  • 0 kudos
Mike_Szklarczyk
by Contributor
  • 1218 Views
  • 1 replies
  • 2 kudos

Resolved! Retrive inforrmation about table clustering from information_schema

Hi guys,I wonder if and when it will be possible to extract from information_schema how the table is clustered. I know that analogous information can be obtained when a table is partitioned using this query: SELECT * FROM cdl_dev.information_schema.c...

  • 1218 Views
  • 1 replies
  • 2 kudos
Latest Reply
NandiniN
Databricks Employee
  • 2 kudos

Iit is not possible to extract clustering information of a table directly from the information_schema . The information_schema.columns table can provide details about partitioning, but similar information for clustering is not available through the i...

  • 2 kudos
Paxi
by New Contributor
  • 5176 Views
  • 1 replies
  • 0 kudos

Maven libs often failed during installation

Dear Community,I have a Databricks compute where I added 2 Maven libs using a custom repository from Nexus (because of a company policy, Databricks cannot communicate with the public internet, so I must use a private Nexus repo using a firewall). Sin...

  • 5176 Views
  • 1 replies
  • 0 kudos
Latest Reply
Satyadeepak
Databricks Employee
  • 0 kudos

@Paxi Not sure if you are still looking for the solution. But we have Databricks Git server proxy that you can configure which enables you to proxy Git commands from Databricks Git folders to your on-premises Git repositories https://docs.databricks....

  • 0 kudos
Prathik
by Databricks Partner
  • 1998 Views
  • 2 replies
  • 1 kudos

Exam got suspended in the middle

My Databricks Certified Data Engineer Associate  exam was suspended on 31st Jan'2025 and is currently in a "SUSPENDED" state.I remained in front of the camera throughout the exam, and suddenly an alert appeared. The support person asked me to show th...

Data Engineering
@Cert-Team
  • 1998 Views
  • 2 replies
  • 1 kudos
Latest Reply
Prathik
Databricks Partner
  • 1 kudos

@Cert-TeamOPS @Cert-Team ,Thanks for your quick response. Please find the latest open request no. - #00610129 

  • 1 kudos
1 More Replies
brickster_2018
by Databricks Employee
  • 9319 Views
  • 4 replies
  • 2 kudos

Resolved! Databricks Spark Vs Spark on Yarn

I am moving my Spark workloads from EMR/on-premise Spark cluster to Databricks. I understand Databricks Spark is different from Yarn. How is the Databricks architecture different from yarn?

  • 9319 Views
  • 4 replies
  • 2 kudos
Latest Reply
de-qrosh
New Contributor III
  • 2 kudos

What about the disadvantages?How can I separate multiple jobs running on the same cluster cleanly in the logs and same in the spark-ui?

  • 2 kudos
3 More Replies
MartinB
by Contributor III
  • 19837 Views
  • 5 replies
  • 3 kudos

Resolved! Interoperability Spark ↔ Pandas: can't convert Spark dataframe to Pandas dataframe via df.toPandas() when it contains datetime value in distant future

Hi,I have multiple datasets in my data lake that feature valid_from and valid_to columns indicating validity of rows.If a row is valid currently, this is indicated by valid_to=9999-12-31 00:00:00.Example:Loading this into a Spark dataframe works fine...

Example_SCD2
  • 19837 Views
  • 5 replies
  • 3 kudos
Latest Reply
ThePhil
New Contributor II
  • 3 kudos

Be aware, that in Databricks 15.2 LTS this behavior is broken.I cannot find the code, but most likely related to the following option:https://github.com/apache/spark/commit/c1c710e7da75b989f4d14e84e85f336bc10920e0#diff-f9ddcc6cba651c6ebfd34e29ef049c3...

  • 3 kudos
4 More Replies
Mahesh_Yadav
by Databricks Partner
  • 3754 Views
  • 1 replies
  • 3 kudos

How to Export lineage data directly from unity catalog without using system tables

I have been trying to check if there is any direct way to export lineage hierarchy data in data bricks.I have tried to build a workaround solution by accessing system tables as per this link:Monitor usage with system tables - Azure Databricks | Micro...

  • 3754 Views
  • 1 replies
  • 3 kudos
Latest Reply
bturnwald39
New Contributor II
  • 3 kudos

I have a similar use case.  The Databricks Lineage Graph is nice but only zooms out enough for the most basic lineages.  We have lineages/data flows with hundreds of tables.  I'd like more flexibility on showing the entire flow in one screen and expo...

  • 3 kudos
hardeeksharma
by Databricks Partner
  • 1038 Views
  • 1 replies
  • 1 kudos

Data ingestion issue with THAI data

I have a use case where my file has data in Thai characters. The source location is azure blob storage, here files are stored in text format. I am using the following code to read the file, but when I am downloading the data from catalog it encloses ...

  • 1038 Views
  • 1 replies
  • 1 kudos
Latest Reply
Lakshay
Databricks Employee
  • 1 kudos

Do the quotes exist in original data?

  • 1 kudos
pradeepvatsvk
by New Contributor III
  • 4174 Views
  • 6 replies
  • 1 kudos

Too many small files from updates

Hi ,I am updating some data into a delta table , each time I  only need to  update  one row due to which after every update statement it is creating new file, How do I tackle this issue , it doesn't make sense to run optimize command after every upda...

  • 4174 Views
  • 6 replies
  • 1 kudos
Latest Reply
Lakshay
Databricks Employee
  • 1 kudos

If you performing 100s of update operations on the delta table, you can opt to run an optimize operation after a batch of 100 updates. There should be no significant performance issue up to 100 such updates

  • 1 kudos
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dc-rnc
by Contributor
  • 4742 Views
  • 1 replies
  • 1 kudos

Resolved! How to deploy an asset bundle job that triggers another one

Hello everyone.Using DAB, is there a dynamic value reference or something equivalent to get a job_id to be used inside the YAML definition of another Databricks job? I'd like to trigger that job from another one, but if I'm using a CI/CD pipeline to ...

  • 4742 Views
  • 1 replies
  • 1 kudos
Latest Reply
NandiniN
Databricks Employee
  • 1 kudos

resources: jobs: my-first-job: name: my-first-job tasks: - task_key: my-first-job-task new_cluster: spark_version: "13.3.x-scala2.12" node_type_id: "i3.xlarge" num_workers: 2 ...

  • 1 kudos
eballinger
by Contributor
  • 6188 Views
  • 2 replies
  • 1 kudos

Resolved! How to grant all tables in schema except 1

Hi Guys, I am trying to grant all tables in a schema to a user group in databricks. The only catch is that there is one table I do not want granted. I currently am granting schema access to the group so the benefit is that as tables are add in the fu...

  • 6188 Views
  • 2 replies
  • 1 kudos
Latest Reply
NandiniN
Databricks Employee
  • 1 kudos

What you are facing is because of inheritance.  https://docs.databricks.com/en/data-governance/unity-catalog/manage-privileges/upgrade-privilege-model.html I would say this is by design, but please feel free to suggest it as an idea here - https://do...

  • 1 kudos
1 More Replies
jspehar
by New Contributor
  • 1441 Views
  • 2 replies
  • 0 kudos

JDBC Error Trying to Connect erwin Data Modeler to Databricks

I am trying to connect erWin Data Modeler to Databricks to reverse engineer a physical data model. I am trying to connect manually per erWin and Databricks instructions, but I am getting the following error[Databricks][DatabricksJDBCDriver][500593] C...

  • 1441 Views
  • 2 replies
  • 0 kudos
Latest Reply
NandiniN
Databricks Employee
  • 0 kudos

I hope you referred https://docs.databricks.com/en/partners/data-governance/erwin.html   It is also possible, it can be a library issue, hope you are using the Databricks JDBC driver.

  • 0 kudos
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AlexCancioBedon
by New Contributor II
  • 886 Views
  • 1 replies
  • 1 kudos
  • 886 Views
  • 1 replies
  • 1 kudos
Latest Reply
Advika_
Databricks Employee
  • 1 kudos

Congratulations, @AlexCancioBedon! This is a great milestone that showcases your expertise in Data engineering with Databricks. We’d love to have you share your insights with the community, whether by sharing best practices or helping others. Keep up...

  • 1 kudos
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