Databricks Community

Databricks has recently enforced Unity Catalog as the output target for Delta Live Tables (DLT), replacing the legacy Hive Metastore approach. As a result, the familiar "allow_expectations_col" column, which was automatically added to help track and ...

You can use Databricks Workflows' foreach task to handle running Notebook B for each file generated in Notebook A. The key is to pass each path as a parameter to Notebook B using Databricks task values and workflows features, not widgets set manually...

The "SparkSession$ does not exist in the JVM" error in your scenario is almost always due to the use of multiprocessing (like ProcessPoolExecutor) with Spark. Spark contexts and sessions cannot safely be shared across processes, especially in Databri...

The issue you’re facing—where all Databricks Asset Bundle jobs are being deployed to all targets instead of only the defined target(s)—appears to be a known limitation in how the bundle resource inclusion and target mapping works in the Databricks CL...

To automate the removal of display() and cache() method calls from multiple PySpark scripts in Databricks notebooks, develop a script that programmatically processes exportable notebook source files (usually in .dbc or .ipynb format) using text-based...

You are encountering an error because the default SQL Server JDBC driver bundled with Databricks may not fully support the authentication value "ActiveDirectoryManagedIdentity"—this option requires at least version 10.2.0 of the Microsoft SQL Server ...

You are attempting to have your Test Databricks streaming job consume files that arrive in your Prod storage, using AutoLoader and EventGrid notifications, without physically copying the data or EventGrid queue to Test. The core challenge is that Eve...

Migrating from Data Factory to Databricks for ETL and warehousing is a solid choice, especially for flexibility and cost-effectiveness in data engineering projects. The core issue—disambiguating “id” fields that are only unique within each source dat...

Refactoring your folder structure and naming conventions for Medallion architecture pipelines is an essential step to keep code maintainable and intuitive. Based on your context, shifting these pipelines from notebook/ to src/ is a solid move, especi...

The more performant solution for Row-Level Security (RLS) in Unity Catalog, when applying to two columns and 150+ groups, generally depends on how much of the access check logic can be pushed into efficient, indexable predicates versus computed at ru...

Your slow Spark runtime and unexpectedly long WholeStageCodeGen compute times are likely tied to a mix of Delta Lake features (especially deletion vectors), Spark’s physical plan, and partition handling. Here’s a detailed breakdown and advice based o...

To connect a self-hosted MySQL database (on a VM, Azure VPN required) to Databricks, you need several components to align: network access from Databricks to MySQL, proper JDBC connector configuration, and correct authentication. This setup is common ...

Authentication for account-level operations with Databricks SDK for Python requires more than just referencing the profile name in your local .databrickscfg file. While the CLI consults .databrickscfg for profiles and can use them directly, the SDK's...