[Solved] Identify the error in this Kafka producer configuration for String serialization: Properties props = new Properties(); props.put("key.serializer", "org.apache.kafka.common.serialization.... | Kafka

Kafka - Producers

Identify the error in this Kafka producer configuration for String serialization:

Properties props = new Properties();
props.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
props.put("value.serializer", "org.apache.kafka.common.serialization.StringDeserializer");
props.put("bootstrap.servers", "localhost:9092");
Producer producer = new KafkaProducer<>(props);

AIncorrect generic types in KafkaProducer declaration

BUsing StringDeserializer instead of StringSerializer for value.serializer

CMissing bootstrap.servers configuration

DNo error, configuration is correct

Step-by-Step Solution

Solution:

Step 1: Check serializer and deserializer usage
Producer requires serializers for key and value, not deserializers.
Step 2: Identify wrong class usage
Value serializer is incorrectly set to StringDeserializer instead of StringSerializer.
Final Answer:
Using StringDeserializer instead of StringSerializer for value.serializer -> Option B
Quick Check:
Producer needs serializers, not deserializers [OK]

Quick Trick: Producer uses serializers, not deserializers [OK]

Common Mistakes:

Mixing serializer and deserializer classes
Forgetting bootstrap.servers (not asked here)
Incorrect generic types (not the main error)

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More Kafka Quizzes

Identify the error in this Kafka producer configuration for String serialization:

Step 1: Check serializer and deserializer usage

Step 2: Identify wrong class usage

Final Answer:

Quick Check:

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