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What does Kafka guarantee about message order when using partitions?

easy📝 Conceptual Q11 of 15
Kafka - Topics and Partitions
What does Kafka guarantee about message order when using partitions?
AMessages are ordered only within the same partition.
BMessages are ordered across all partitions.
CMessages are never ordered in Kafka.
DMessages are ordered only if sent without keys.
Step-by-Step Solution
Solution:

  1. Step 1: Understand Kafka partition concept

    Kafka divides topics into partitions, and each partition stores messages in order.

  2. Step 2: Identify ordering guarantee scope

    Ordering is guaranteed only inside each partition, not across partitions.

  3. Final Answer:

    Messages are ordered only within the same partition. -> Option A

  4. Quick Check:

    Partition ordering = within partition only [OK]
Quick Trick: Remember: order is per partition, not across partitions [OK]
Common Mistakes:
  • Thinking Kafka orders messages across all partitions
  • Assuming messages without keys are ordered
  • Believing Kafka never guarantees order

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