How can you use Kafka Streams to transform a nested JSON event into a flat key-value pair stream for easier processing?

hard🚀 Application Q9 of Q15

Kafka - Streams

AUse filter() to remove nested JSON objects

BUse map() to extract nested fields and create flat key-value pairs

CUse join() to combine nested JSON with flat streams

DUse groupBy() to group nested JSON fields

Step-by-Step Solution

Solution:

Step 1: Understand flattening nested JSON
Flattening means extracting nested fields into simple key-value pairs.
Step 2: Choose the correct Kafka Streams operation
map() can transform each event by extracting and reshaping data.
Final Answer:
Use map() to extract nested fields and create flat key-value pairs -> Option B
Quick Check:
Flatten nested JSON with map() transformation [OK]

Quick Trick: Use map() to reshape complex data into flat pairs [OK]

Common Mistakes:

MISTAKES

Master "Streams" in Kafka

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Kafka Quizzes