Kafka - Producers
If a Kafka producer publishes data without specifying a key, where will the message be stored?
If a Kafka producer publishes data without specifying a key, where will the message be stored?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Recall Kafka's default partitioning behavior
If no key is provided, Kafka distributes messages evenly using round-robin across partitions.Step 2: Confirm message storage location
Messages go to partitions in turn, not always the first or all partitions.Final Answer:
In a partition chosen in a round-robin fashion -> Option CQuick Check:
No key means round-robin partitioning [OK]
Quick Trick: No key? Kafka uses round-robin to pick partition [OK]
Common Mistakes:
- Assuming messages always go to first partition
- Thinking messages duplicate in all partitions
- Believing messages get rejected without key
Master "Producers" in Kafka
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