Kafka - Consumers
Which of the following is the correct way to subscribe a Kafka consumer to multiple topics named "topicA" and "topicB"?
Which of the following is the correct way to subscribe a Kafka consumer to multiple topics named "topicA" and "topicB"?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Recall the subscribe() method signature
In Kafka,subscribe()takes a list (or collection) of topic names as an argument.Step 2: Identify correct syntax for multiple topics
Passing a list like["topicA", "topicB"]is the correct way to subscribe to multiple topics.Final Answer:
consumer.subscribe(["topicA", "topicB"]) -> Option AQuick Check:
subscribe() needs a list for multiple topics [OK]
Quick Trick: Use a list to subscribe to multiple topics [OK]
Common Mistakes:
- Passing multiple string arguments instead of a list
- Concatenating topic names into one string
- Using curly braces instead of square brackets
Master "Consumers" in Kafka
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