[Solved] You have a Kafka producer with retries=5 but enable.idempotency=false. What problem might occur? — Ans: Duplicate messages may be produced on retries | Kafka

Kafka - Producers

You have a Kafka producer with retries=5 but enable.idempotency=false. What problem might occur?

AMessages will be encrypted automatically

BDuplicate messages may be produced on retries

CProducer will crash on first failure

DMessages will never be sent

Step-by-Step Solution

Solution:

Step 1: Understand retries without idempotency
Retries resend messages on failure, but without idempotency duplicates can happen.
Step 2: Identify the problem
Without idempotency, each retry may produce the same message again, causing duplicates.
Final Answer:
Duplicate messages may be produced on retries -> Option B
Quick Check:
No idempotency + retries = duplicates risk [OK]

Quick Trick: Retries without idempotency cause duplicates [OK]

Common Mistakes:

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You have a Kafka producer with retries=5 but enable.idempotency=false. What problem might occur?