Kafka - Consumers
What is the main purpose of using a
poll() method inside a Kafka consumer loop?What is the main purpose of using a poll() method inside a Kafka consumer loop?
easy📝 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the role of
Thepoll()in Kafka consumerpoll()method is used to fetch messages from Kafka topics.Step 2: Recognize the loop usage
Usingpoll()inside a loop allows the consumer to keep listening and fetching new messages continuously.Final Answer:
To continuously fetch new messages from Kafka topics -> Option BQuick Check:
poll() fetches messages repeatedly [OK]
Quick Trick: poll() inside loop fetches messages repeatedly [OK]
Common Mistakes:
- Thinking poll() sends messages
- Confusing poll() with closing connection
- Assuming poll() creates topics
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