Vishal Jadhav Essential debugging with a Local Spark Cluster on Windows
Are you looking to master Apache Spark troubleshooting, hi, but find that local mode hides real-world errors? Running Spark in local mode executes everything in a single JVM. This setup…
Top 10 Data Engineering Skills Every Company Needs in 2026
Most in demand skills for data engineers in 2026
What Is Data Engineering? A Complete Guide for 2026?
Data Engineering has become one of the most essential disciplines in todayโs data-driven world. Whether youโre a student, a beginner exploring tech, techie or someone interested in how companies use…
Data Modeling – How to design it?
Data modeling is a structured approach to designing and organizing data for a database or system. Here are the key steps: 1. Identify Business RequirementsUnderstand the purpose of the data…
GCP BigQuery
Following are the most important topics in bigquery. This is also important topics in a perspective of GCP Profession Data Engineer exam.
What Are Accumulators, and How Do They Work?
What Are Accumulators, and How Do They Work? This is a most frequently asked PySpark interview question! Hereโs the breakdown: What Are Accumulators? How Do They Work? Example: Pro Tip:…
How Catalyst Optimizer Works in PySpark
๐ช๐ต๐ฎ๐ ๐ถ๐ ๐๐ต๐ฒ ๐๐ฎ๐๐ฎ๐น๐๐๐ ๐ข๐ฝ๐๐ถ๐บ๐ถ๐๐ฒ๐ฟ, ๐ฎ๐ป๐ฑ ๐๐ผ๐ ๐๐ผ๐ฒ๐ ๐๐ ๐ช๐ผ๐ฟ๐ธ? This is a must-know PySpark interview question! Hereโs the breakdown: ๐ช๐ต๐ฎ๐ ๐ถ๐ ๐๐ต๐ฒ ๐๐ฎ๐๐ฎ๐น๐๐๐ ๐ข๐ฝ๐๐ถ๐บ๐ถ๐๐ฒ๐ฟ? ๐๐ผ๐ ๐๐ผ๐ฒ๐ ๐๐ ๐ช๐ผ๐ฟ๐ธ? ๐๐ฒ๐…
How to handle skewed data in PySpark?
๐๐ผ๐ ๐๐ผ ๐ฌ๐ผ๐ ๐๐ฎ๐ป๐ฑ๐น๐ฒ ๐ฆ๐ธ๐ฒ๐๐ฒ๐ฑ ๐๐ฎ๐๐ฎ ๐ถ๐ป ๐ฃ๐๐ฆ๐ฝ๐ฎ๐ฟ๐ธ? This is a critical PySpark interview question! Hereโs the breakdown: โ ๐ช๐ต๐ฎ๐ ๐ถ๐ ๐ฆ๐ธ๐ฒ๐๐ฒ๐ฑ ๐๐ฎ๐๐ฎ? A skewed partition in Spark occurs when…
Given a code – How Catalyst Optimizer Works in This Code?
You have the following code. Explain how the catalyst optimizer works in the code? Explain in detail PySparkโs Catalyst Optimizer is a powerful query optimizer used by Spark SQL to…
Catalist optimizer : Prediction pushdown
if in your code/query if you are filterring the data at the end, Catalyst optimizer (in prediction pushdown) will apply filtering on input or source and then do the other…