What is Dynamic Allocation in Spark (Databricks)
🔄 What is Dynamic Allocation in Spark (Databricks)? Dynamic Allocation is a feature that automatically adjusts the number of executors (worker nodes) based on your job’s needs. Instead of using…
What is Garbage Collection in Databricks
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…
How to reduce the number of shuffle partitions in Databrick
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
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…
Azure DevOps Interview Questions & Answers
Azure DevOps Interview Questions & Answers 1️⃣ Essential (Basic) Questions These test your foundation. 1. What is Azure DevOps?Azure DevOps is Microsoft’s cloud service providing DevOps tools for planning, developing,…
50 Azure Data Factory (ADF) interview questions
Here’s a comprehensive list of 50 Azure Data Factory (ADF) interview questions across essential, advanced, and scenario-based levels with answers. This will help you prepare effectively: ✅ Essential Level (Basic…
50 interview questions and answers for Azure Synapse SQL Dedicated Pool
List of 50 interview questions and answers for Azure Synapse SQL Dedicated Pool, categorized by level and type: 🔹 Essential Level (1–15) 🔸 Advanced Level (16–35) 🧩 Scenario-Based Questions (36–50)…
50 interview questions and answers for an Azure Databricks Platform Engineer
Here are 50 interview questions and answers for an Azure Databricks Platform Engineer, divided by skill level and covering key areas (core, advanced, and scenario-based): 🔹 Essential Level (Core –…
Databricks Unity Catalog: Volume – Full Explanation
📦 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:…