You have a Kafka topic with 5 partitions. You want to send messages with keys but ensure that messages with null keys are evenly distributed across partitions. How should you configure the producer?

hard📝 Application Q9 of 15

Kafka - Producers

AUse a custom partitioner that assigns null keys randomly across partitions

BSet all null keys to a fixed string to force same partition

CAvoid sending messages with null keys

DSet the value as the key for null keys

Step-by-Step Solution

Solution:

Step 1: Understand default partitioning behavior
By default, null keys are assigned partitions in a round-robin fashion, but custom behavior may be needed.
Step 2: Choose configuration to distribute null keys evenly
A custom partitioner can assign null keys randomly or evenly across partitions.
Final Answer:
Use a custom partitioner that assigns null keys randomly across partitions -> Option A
Quick Check:
Custom partitioner controls null key distribution [OK]

Quick Trick: Custom partitioner needed for null key distribution [OK]

Common Mistakes:

Forcing null keys to fixed string
Avoiding null keys unnecessarily
Using value as key for null keys

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More Kafka Quizzes

You have a Kafka topic with 5 partitions. You want to send messages with keys but ensure that messages with null keys are evenly distributed across partitions. How should you configure the producer?

Step 1: Understand default partitioning behavior

Step 2: Choose configuration to distribute null keys evenly

Final Answer:

Quick Check:

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