[Solved] Identify the error in this Kafka SDK consumer code snippet: consumer = KafkaConsumer('my_topic', bootstrap_servers='localhost:9092') for message in consumer: print(message.value.... | Kafka

Kafka - with Java/Python

Identify the error in this Kafka SDK consumer code snippet:

consumer = KafkaConsumer('my_topic', bootstrap_servers='localhost:9092')
for message in consumer:
    print(message.value.decode('utf-8'))
consumer.close()

AIncorrect method to decode message value

BTopic name should be a list, not a string

CConsumer.close() should be called before the loop

DMissing group_id parameter in consumer initialization

Step-by-Step Solution

Solution:

Step 1: Check KafkaConsumer topic parameter type
The KafkaConsumer expects a list of topics, not a single string.
Step 2: Identify the correct topic argument format
Passing 'my_topic' as a string causes an error; it should be ['my_topic'].
Final Answer:
Topic name should be a list, not a string -> Option B
Quick Check:
Topic parameter must be list = Topic name should be a list, not a string [OK]

Quick Trick: Pass topics as list, not string [OK]

Common Mistakes:

MISTAKES

Omitting group_id is allowed but not error here
Decoding message value with decode('utf-8') is correct
Calling close() after loop is correct

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More Kafka Quizzes

Identify the error in this Kafka SDK consumer code snippet:

Step 1: Check KafkaConsumer topic parameter type

Step 2: Identify the correct topic argument format

Final Answer:

Quick Check:

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