[Solved] You have set batch.size to 0 in your Kafka producer config. What issue will this cause? — Ans: Producer will send messages immediately without batching | Kafka

Kafka - Performance Tuning

You have set batch.size to 0 in your Kafka producer config. What issue will this cause?

AProducer will throw a configuration error and fail to start

BProducer will send messages immediately without batching

CProducer will batch messages indefinitely causing delays

DProducer will compress messages with default gzip

Step-by-Step Solution

Solution:

Step 1: Understand batch.size valid values
Batch size can be set to 0, which disables batching. Messages are sent immediately without waiting to fill a batch.
Step 2: Identify Kafka producer behavior on batch.size=0
The producer will not throw an error; it will work but send each message in its own request, potentially reducing throughput.
Final Answer:
Producer will send messages immediately without batching -> Option B
Quick Check:
batch.size=0 disables batching [OK]

Quick Trick: batch.size=0 disables batching safely, sends immediately [OK]

Common Mistakes:

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You have set batch.size to 0 in your Kafka producer config. What issue will this cause?