[Solved] How should you correctly configure a Kafka producer in Java to enable idempotence?Properties props = new Properties(); // Which line enables idempotence? | Kafka

Kafka - Message Delivery Semantics

How should you correctly configure a Kafka producer in Java to enable idempotence?

Properties props = new Properties();
// Which line enables idempotence?

Aprops.put("enableIdempotence", "yes");

Bprops.put("idempotence.enabled", true);

Cprops.put("enable.idempotence", "true");

Dprops.put("enable.idempotence", true);

Step-by-Step Solution

Solution:

Step 1: Identify correct property key
The correct Kafka producer config key is enable.idempotence.
Step 2: Correct value type
Values must be strings in Java Properties, so "true" as a string is correct.
Step 3: Evaluate options
props.put("enable.idempotence", "true"); uses correct key and string value. props.put("enable.idempotence", true); uses boolean true which is invalid in Properties.
Final Answer:
props.put("enable.idempotence", "true"); -> Option C
Quick Check:
Property keys and string values required [OK]

Quick Trick: Use string "true" with key enable.idempotence [OK]

Common Mistakes:

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How should you correctly configure a Kafka producer in Java to enable idempotence?