Under the Hood Data - Invidious

Under the Hood Data

Data engineering, visualized.

Animated explanations of how data systems actually work under the
hood: from distributed computing to the modern data stack.

View channel on YouTube

Switch Invidious Instance

Videos

newest

oldest

popular

9:26

Why Your Backfill Double-Counted Row

Under the Hood Data

Shared 1 week ago

6 views

5:18

PySpark UDF vs Built-in Functions: Serialization Cost, Pushdown, Nulls | Spark Course 2.7

Under the Hood Data

Shared 1 week ago

6 views

8:38

CSV vs Parquet: What Your Query Actually Reads

Under the Hood Data

Shared 3 weeks ago

38 views

4:47

Spark SQL and Views in PySpark: Same Plan, Temp vs Global, Metastore | Spark Course 2.6

Under the Hood Data

Shared 3 weeks ago

11 views

9:01

Spark vs DuckDB: When Distributed Compute Loses

Under the Hood Data

Shared 3 weeks ago

70 views

7:45

Spark Data Skew Explained: Why One Task Becomes the Bottleneck

Under the Hood Data

Shared 1 month ago

29 views

4:31

GroupBy and Aggregations in PySpark: Partial Aggregation, Shuffle, Nulls | Spark Course 2.5

Under the Hood Data

Shared 1 month ago

44 views

4:45

How to Filter Nulls in PySpark (and Why == None Fails) | Spark Course 2.4

Under the Hood Data

Shared 1 month ago

11 views

4:24

PySpark Schemas Explained: Stop Inferring, Start Declaring | Spark Course 2.3

Under the Hood Data

Shared 1 month ago

15 views

5:03

4 Ways to Reference Columns in PySpark (One Causes a Hidden Bug) | Spark Course 2.2

Under the Hood Data

Shared 1 month ago

15 views

5:04

Reading & Writing Data in PySpark: CSV vs JSON vs Parquet | Spark Course 2.1

Under the Hood Data

Shared 1 month ago

22 views

5:19

Apache Spark 4.2: What Actually Matters (and What to Ignore)

Under the Hood Data

Shared 1 month ago

516 views

5:01

Install PySpark Locally in 15 Minutes (No Cloud) | Spark Course 2.0

Under the Hood Data

Shared 1 month ago

32 views

4:42

What Is a DataFrame in PySpark? | Spark Course 1.3

Under the Hood Data

Shared 1 month ago

56 views

6:01

Spark Jobs, Stages & Tasks: How One Line Becomes 200 Tasks | Spark Course 1.2

Under the Hood Data

Shared 1 month ago

97 views

5:24

Apache Spark Explained: How It Processes Terabytes of Data | Spark Course 1.1

Under the Hood Data

Shared 1 month ago

106 views