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You want to consume messages from two Kafka topics topicA and topicB using one Python KafkaConsumer instance. Which code snippet correctly sets this up?

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Kafka - with Java/Python

You want to consume messages from two Kafka topics topicA and topicB using one Python KafkaConsumer instance. Which code snippet correctly sets this up?

from kafka import KafkaConsumer
consumer = KafkaConsumer(_____)
for msg in consumer:
    print(f"Topic: {msg.topic}, Message: {msg.value.decode()}")

A["topicA", "topicB"], bootstrap_servers='localhost:9092', auto_offset_reset='earliest', group_id='group1'

B"topicA,topicB", bootstrap_servers='localhost:9092', group_id='group1'

C"topicA" and "topicB", bootstrap_servers='localhost:9092'

D"topicA"; "topicB", bootstrap_servers='localhost:9092', group_id='group1'

Step-by-Step Solution

Solution:

Step 1: Check how to subscribe to multiple topics
KafkaConsumer accepts a list of topic names to subscribe to multiple topics.
Step 2: Verify correct syntax for multiple topics
["topicA", "topicB"], bootstrap_servers='localhost:9092', auto_offset_reset='earliest', group_id='group1' correctly passes a list ["topicA", "topicB"] and required parameters.
Final Answer:
["topicA", "topicB"], bootstrap_servers='localhost:9092', auto_offset_reset='earliest', group_id='group1' -> Option A
Quick Check:
List of topics subscribes to multiple topics [OK]

Quick Trick: Use list of topic names to consume multiple topics [OK]

Common Mistakes:

MISTAKES

Passing topics as comma-separated string
Using logical operators like and or ; between topics
Omitting group_id for consumer group

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