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Forum Posts

marvin-alpura
by New Contributor II
  • 3233 Views
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Power BI to Databricks Semantic Layer Generator (DAX → SQL/PySpark)

Hi everyone!I’ve just released an open-source tool that generates a semantic layer in Databricks notebooks from a Power BI dataset using the Power BI REST API. Im not an expert yet, but it gets job done and instead of using AtScale/dbt/or the PBI Sem...

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techgeorge
by New Contributor III
  • 1060 Views
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How to train a Convolutional Neural Network on Databricks with Tensorflow and Keras

Here is how to trained a lightweight Convolutional Neuronal Network (CNN) to detect pneumonia from chest X-rays pictures on Azure Databricks. I promise no LLMs, no hype, just real-world deep learning:1. Built it with TensorFlow & Keras on Databricks2...

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  • 1060 Views
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Brahmareddy
by Esteemed Contributor II
  • 2924 Views
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Real Lessons in Databricks Schema, Streaming, and Unity Catalog

Hey Databricks community,I wanted to take a moment to share some things I’ve learned while working with Databricks in real projects—especially around schema management, Unity Catalog, Autoloader, and streaming jobs. These are the kinds of small detai...

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pradeepvatsvk
by New Contributor III
  • 1275 Views
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Inclusion of special characters while saving or downloading as a csv

Hi All, I have data which looks like this High Corona40% 50cl Pm £13.29  but when saving it as a csv it is getting converted into High Corona40% 50cl Pm £13.29    . wherever we have the euro sign . I thing to note here is while displaying the data i...

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Brahmareddy
by Esteemed Contributor II
  • 2136 Views
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Use Query Patterns to Suggest Indexes Dynamically

Hey folks,Ever notice how a query that used to run super fast suddenly starts dragging? We’ve all been there. As data grows, those little inefficiencies in your SQL start showing up — and they show up hard. That’s where something cool comes in: using...

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DataDarvish
by Databricks Partner
  • 3637 Views
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Unit Testing for Data Engineering: How to Ensure Production-Ready Data Pipelines

In today’s data-driven world, the success of any business use case relies heavily on trust in the data. This trust is built upon key pillars such as data accuracy, consistency, freshness, and overall quality. When organizations release data into prod...

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SashankKotta
by Databricks Employee
  • 10436 Views
  • 8 replies
  • 6 kudos

Library Management via Custom Compute Policies and ADF Job Triggering

This guide is intended for those looking to install libraries on a cluster using a Custom Compute Policy and trigger Databricks jobs from an Azure Data Factory (ADF) linked service. While many users rely on init scripts for library installation, it i...

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  • 10436 Views
  • 8 replies
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Latest Reply
Wojciech_BUK
Valued Contributor III
  • 6 kudos

Hi @hassan2 I had same issue and found solution.When I created POOL i created it as On-demand (not spot) and then policy only worked when I removed  entire section "azure_attributes.spot_bid_max_price" from policy.Looks like "azure_attributes.spot_bi...

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WarrenO
by New Contributor III
  • 5043 Views
  • 1 replies
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Resolved! Log Custom Transformer with Feature Engineering Client

Hi everyone,I'm building a Pyspark ML Pipeline where the first stage is to fill nulls with zero. I wrote a custom class to do this since I cannot find a Transformer that will do this imputation. I am able to log this pipeline using ML Flow log model ...

Community Articles
Custom Transformer
feature engineering
ML FLow
pipeline
pyspark
  • 5043 Views
  • 1 replies
  • 1 kudos
Latest Reply
koji_kawamura
Databricks Employee
  • 1 kudos

Hi @WarrenO , thanks for sharing that with the detailed code! I was able to reproduce the error, specifically the following error: AttributeError: module '__main__' has no attribute 'CustomAdder'File <command-1315887242804075>, line 3935 evaluator = ...

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yadvendra_ksh
by New Contributor II
  • 1114 Views
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The Hidden Security Risks in Stored Procedure Migrations—What Databricks Exposed

Your stored procedure migration to DB isn't just a 'copy-paste' job - it's a security nightmare waiting to happen.We discovered our 'trusted' stored procedures had hidden access patterns that nearly compromised our entire data governance model. Here'...

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yadvendra_ksh
by New Contributor II
  • 3226 Views
  • 0 replies
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The Hidden Pitfalls of Snowflake to Databricks Migrations

Everyone's rushing their Snowflake to Databricks migration, and they're setting themselves up for failure.After leading multiple enterprise migrations to Databricks last quarter, here's what shocked me: The technical lift isn't the hard part. It's th...

  • 3226 Views
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Ajay-Pandey
by Databricks MVP
  • 3719 Views
  • 1 replies
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📊 Simplifying CDC with Databricks Delta Live Tables & Snapshots 📊

In the world of data integration, synchronizing external relational databases (like Oracle, MySQL) with the Databricks platform can be complex, especially when Change Data Feed (CDF) streams aren’t available. Using snapshots is a powerful way to mana...

Pull-Based Snapshots.png
  • 3719 Views
  • 1 replies
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Latest Reply
BilalHaniff1
New Contributor II
  • 1 kudos

Hi AjayCan apply changes into snapshot handle re-processing of an older snapshot? UseCase:- Source has delivered data on day T, T1 and T2.  - Consumers realise there is an error on the day T data, and make a correction in the source. The source redel...

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ChsAIkrishna
by Contributor
  • 2602 Views
  • 1 replies
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Consideration Before Migrating Hive Tables to Unity Catalog

Databricks recommends four methods to migrate Hive tables to Unity Catalog, each with its pros and cons. The choice of method depends on specific requirements.SYNC: A SQL command that migrates schema or tables to Unity Catalog external tables. Howeve...

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  • 2602 Views
  • 1 replies
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Latest Reply
Mantsama4
Databricks Partner
  • 4 kudos

This is a great solution! The post effectively outlines the methods for migrating Hive tables to Unity Catalog while emphasizing the importance of not just performing a simple migration but transforming the data architecture into something more robus...

  • 4 kudos
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