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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

Anoora
by New Contributor
  • 29 Views
  • 1 replies
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Scheduling and triggering jobs based on time and frequency precedence

I have a table in Databricks that stores job information, including fields such as job_name, job_id, frequency, scheduled_time, and last_run_time.I want to run a query every 10 minutes that checks this table and triggers a job if the scheduled_time i...

Data Engineering
data engineering
jobs
scheduling
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SamAdams
Contributor
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You could add a job with a scheduled based trigger that runs every 10 minutes. The task at the start of the job runs a SQL query against the job information table and uses the logic you described above to output a boolean value. Then feed that boolea...

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aonurdemir
by Contributor
  • 41 Views
  • 1 replies
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Broken s3 file paths in File Notifications for auto loader

Suddenly at "2025-10-23T14:12:48.409+00:00", coming file paths from file notification queue started to be urlencoded. Hence, our pipeline gets file not found exception. I think something has changed suddenly and broke notification system. Here are th...

  • 41 Views
  • 1 replies
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Latest Reply
K_Anudeep
Databricks Employee
  • 1 kudos

Hello @aonurdemir, Could you please re-run your pipeline now and check? This issue should be mitigated now. It is due to a recent internal bug that led to the unexpected handling of file paths with special characters. You should set ignoreMissingFile...

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EricCournarie
by New Contributor III
  • 19 Views
  • 2 replies
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Retrieving OBJECT values with the JDBC driver may lead to invalid JSON

Hello,Using the JDBC driver , I try to retrieve values in the ResultSet for a OBJECT type. Sadly, it returns invalid JSONGiven the SQLCREATE OR REPLACE TABLE main.eric.eric_complex_team (`id` INT,`nom` STRING,`infos` STRUCT<`age`: INT, `ville`: STRIN...

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EricCournarie
New Contributor III
  • 0 kudos

Hello,  thanks for the quick response .Sadly I do not have the hand on the SQL request , so no way for me to modify it ... 

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Akshay_Petkar
by Valued Contributor
  • 37 Views
  • 1 replies
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%run notebook fails in Job mode with Py4JJavaError (None.get), but works in interactive notebook

 Hi everyone,I’m facing an issue when executing a Databricks job where my notebook uses %run to include other notebooks. I have a final notebook added as a task in a job, and inside that notebook I use %run to call another notebook that contains all ...

  • 37 Views
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K_Anudeep
Databricks Employee
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Hello @Akshay_Petkar , %run can break in Jobs due to path resolution—use relative paths (e.g., %run ./lib/utils) and keep all targets in the same Repo. Don’t rely on widget state. Define widgets only in the entry notebook and pass values exp...

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abhirupa7
by New Contributor
  • 57 Views
  • 1 replies
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Databricks Workflow

I have a query. I have multiple job (workflow)present in my workspace. Those job runs regularly. Multiple task present in those jobs. Few task having notebook that contain for each code in it. now when a job runs that particular task execute the for ...

  • 57 Views
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AbhaySingh
Databricks Employee
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Just to confirm : You are using this API endpoint already? https://docs.databricks.com/api/workspace/jobs/getrun

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DylanStout
by Contributor
  • 3029 Views
  • 1 replies
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Pyspark ML tools

Cluster policies not letting us use Pyspark ML toolsIssue details: We have clusters available in our Databricks environment and our plan was to use functions and classes from "pyspark.ml" to process data and train our model in parallel across cores/n...

  • 3029 Views
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Louis_Frolio
Databricks Employee
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Hey @DylanStout ,   Thanks for laying out the symptoms clearly—this is a classic clash between Safe Spark (shared/high-concurrency) protections and multi-threaded/driver-mutating code paths.   What’s happening On clusters with the Shared/Safe Spark a...

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AvneeshSingh
by New Contributor
  • 3224 Views
  • 1 replies
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Autloader Data Reprocess

Hi ,If possible can any please help me with some autloader options I have 2 open queries ,(i) Let assume I am running some autoloader stream and if my job fails, so instead of resetting the whole checkpoint, I want to run stream from specified timest...

Data Engineering
autoloader
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AbhaySingh
Databricks Employee
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Have you reviewed following doc already? Please let me know specifics and we can go from there but i'd start with following doc. https://docs.databricks.com/aws/en/ingestion/cloud-object-storage/auto-loader/options  

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dhruvs2
by New Contributor
  • 73 Views
  • 3 replies
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How to trigger a Databricks job only after multiple other jobs have completed

We have a use case where Job C should start only after both Job A and Job B have successfully completed.In Airflow, we achieve this using an ExternalTaskSensor to set dependencies across different DAGs.Is there a way to configure something similar in...

  • 73 Views
  • 3 replies
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Latest Reply
BS_THE_ANALYST
Esteemed Contributor II
  • 4 kudos

Hi @dhruvs2  .A Lakeflow Job consists of tasks. The tasks can be things like notebooks or other jobs. If you want to orchestrate many jobs, I'd agree that having a job to do this is your best bet . Then you can setup the dependencies as you require.I...

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Adam_Borlase
by New Contributor III
  • 71 Views
  • 3 replies
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Error trying to edit Job Cluster via Databricks CLI

Good Day all,After having issues with Cloud resources allocated to Lakeflow jobs and Gateways I am trying to apply a policy to the cluster that is allocated to the Job. I am very new to a lot of the databricks platform and the administration so all h...

  • 71 Views
  • 3 replies
  • 1 kudos
Latest Reply
Louis_Frolio
Databricks Employee
  • 1 kudos

@Adam_Borlase ,  Thanks, this is helpful context. The key is that the SQL Server connector’s ingestion pipeline runs on serverless, while the ingestion “gateway” runs on classic compute in your cloud account, so vCPU family quotas can block gateway c...

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akeel-rehman
by New Contributor
  • 2885 Views
  • 1 replies
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Best Practices for Reusable Workflows & Cluster Management Across Repos.

Hi everyone,I am looking for best practices around reusable workflows in Databricks, particularly in these areas:Reusable Workflows Instead of Repetition: How can we define reusable workflows rather than repeating the same steps across multiple jobs?...

  • 2885 Views
  • 1 replies
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Latest Reply
AbhaySingh
Databricks Employee
  • 0 kudos

Here are my recommendations: 1. Databricks Asset Bundles (DABs) for reusable workflows   2. API-based triggering and Run Job Tasks for cross-repo workflows   3. Instance Pools as the #1 game-changer for cluster optimization (5-10 seconds vs 5-10 minu...

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jorperort
by Contributor
  • 96 Views
  • 5 replies
  • 4 kudos

Resolved! Spark JDBC Write Fails for Record Not Present - PK error

Good afternoon everyone,I’m writing this post to see if anyone has encountered this problem and if there is a way to resolve it or understand why it happens. I’m working in a Databricks Runtime 15.4 LTS environment, which includes Apache Spark 3.5.0 ...

  • 96 Views
  • 5 replies
  • 4 kudos
Latest Reply
ManojkMohan
Honored Contributor
  • 4 kudos

@jorperort  When writing to SQL Server tables with composite primary keys from Databricks using JDBC, unique constraint violations are often caused by Spark’s distributed retry logic  https://docs.databricks.com/aws/en/archive/connectors/jdbcSolution...

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Dimitry
by Contributor III
  • 64 Views
  • 4 replies
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databricks notebook parameter works in interactive mode but not in the job

Hi guys I've added a parameter "files_mask " to a notebook, with a default value.The job running this notebook broke with error: com.databricks.dbutils_v1.InputWidgetNotDefined: No input widget named files_mask is definedCode: mask = dbutils.widgets....

  • 64 Views
  • 4 replies
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Latest Reply
szymon_dybczak
Esteemed Contributor III
  • 0 kudos

Hi @Dimitry ,Do you use python or scala in your notebook?

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janm2
by New Contributor II
  • 1171 Views
  • 5 replies
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Autoloader cleansource option does not take any effect

Hello everyone,I was very keen to try out the Autoloader's new cleanSource option so we can clean up our landing folder easily.However I found out it does not have any effect whatsoever. As I cannot create a support case I am creating this post.A sim...

  • 1171 Views
  • 5 replies
  • 1 kudos
Latest Reply
SanthoshU
New Contributor II
  • 1 kudos

Any Solution ? 

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