Yousry Mohamed – Medium

Yousry Mohamed

Yousry Mohamed
in
Level Up Coding

Stop using plain PySpark UDFs : No one likes slow cars! Part II

Quick insights about how Pandas UDFs work

Sep 7

Stop using plain PySpark UDFs : No one likes slow cars! Part II

Sep 7

Yousry Mohamed
in
Level Up Coding

Stop using plain PySpark UDFs : No one likes slow cars!

How complex logic can be still implemented using out of the box Spark functions with lightning fast performance.

Jul 18

Stop using plain PySpark UDFs : No one likes slow cars!

Jul 18

Yousry Mohamed
in
Level Up Coding

Delta Lake Liquid Clustering — A visual explanation

How to optimize lakehouse data storage layout with minimal effort.

Jan 28

Delta Lake Liquid Clustering — A visual explanation

Jan 28

Yousry Mohamed
in
Level Up Coding

Building a lakehouse on Google Cloud sans Databricks

Combining Delta Lake, Iceberg and BigLake

Dec 17, 2023

Building a lakehouse on Google Cloud sans Databricks

Dec 17, 2023

Yousry Mohamed
in
Level Up Coding

Navigating the Void: Unraveling the Mysteries and Pitfalls of the ‘Void’ Data Type in Apache Spark

Exploring how a void column appears into Spark DataFrames and what could be the implications.

Dec 5, 2023

Navigating the Void: Unraveling the Mysteries and Pitfalls of the ‘Void’ Data Type in Apache Spark

Dec 5, 2023

Yousry Mohamed
in
Level Up Coding

Setting up a PySpark local developmet environment for Dataproc serverless

Smooth dependency managment for local developmet and production jobs

Aug 29, 2023

Setting up a PySpark local developmet environment for Dataproc serverless

Aug 29, 2023

Yousry Mohamed
in
Level Up Coding

dbt tests vs Delta Live Tables expectations : a click bait to Spark observable metrics

Comparing dbt and DLT tests performance and corelating to Spark observable metrics

Aug 5, 2023

dbt tests vs Delta Live Tables expectations : a click bait to Spark observable metrics

Aug 5, 2023

Yousry Mohamed
in
Level Up Coding

Delta Lake Universal Format — A First Look

Write as delta lake — Read as iceberg

Jul 15, 2023

Delta Lake Universal Format — A First Look

Jul 15, 2023

Yousry Mohamed
in
Level Up Coding

Back to basics : Spark caching key ideas!

Foundational concepts about how Spark caches Dataframes vs RDDs

Mar 13, 2023

Back to basics : Spark caching key ideas!

Mar 13, 2023

Yousry Mohamed

Delta lake Z-Ordering from A to Z

Understand how to optimise delta lake tables for high cardinality queries.

Sep 19, 2022

Delta lake Z-Ordering from A to Z

Sep 19, 2022

Yousry Mohamed

Yousry Mohamed

Yousry is a lead consultant working for Cuusoo. He is very passionate about all things data including Big Data, Machine Learning and AI.

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