Mohammad Gufran Jahangir

GC stands for Garbage Collection — it’s a process in the Java Virtual Machine (JVM) (which Apache Spark runs on) that automatically frees up memory by removing data (objects) that…

in Databricks to reduce the number of shuffle partitions during wide transformations (like groupBy, join, distinct, repartition) so the driver and executors don’t get overwhelmed with too many small shuffle…

Fixing Databricks Error: “Driver is up but is not responsive, likely due to GC” When running a notebook or scheduled job in Databricks, you might encounter an error like this…

📦 Databricks Unity Catalog: Volume – Full Explanation 🔹 What is a Volume? A Volume in Databricks Unity Catalog is a secure, governed folder used to store non-tabular data like:…

Creating a Job Compute (also called a Job Cluster) in Databricks allows you to define a dedicated compute environment that is spun up only when your job runs — and…

💡 Understanding Databricks Compute Options: Serverless, Pro, Classic & SQL Warehouses As more teams migrate data workloads to Databricks Unity Catalog, one question frequently arises: “What’s the difference between Serverless,…

🔐 What Is SCIM? A Beginner’s Guide to User & Group Syncing in the Cloud In today’s cloud-first world, managing user access across tools like Databricks, Azure, Slack, and Zoom…

🔐 How to Fetch User and Group Assignments Across Unity Catalog Workspaces in Databricks 📌 Introduction As organizations move toward centralized data governance with Databricks Unity Catalog (UC), understanding user…

✅ What Is a Service Principal in Databricks? A service principal in Databricks represents a non-human identity — like an application, automation tool, or CI/CD pipeline — used to securely…

How to Train and Track ML Models with MLflow in Databricks (Beginner to Advanced Guide) MLflow is the open-source standard for managing the end-to-end machine learning lifecycle, and Databricks integrates…

🔍 Auditing User Access in Databricks with System Tables: From Basics to Advanced Managing and auditing user access is a critical part of maintaining a secure and compliant data platform.…

How to Manage Data Governance with Unity Catalog and Privilege Models As organizations scale their data platforms, managing data access, security, and compliance becomes increasingly complex. Databricks’ Unity Catalog offers…

Getting Started with Unity Catalog: A Complete Guide Databricks Unity Catalog is a unified governance solution for all data and AI assets in the Lakehouse. Whether you’re an administrator, data…