Kafka - Multi-Datacenter and Replication
Given MirrorMaker replicates topic 'orders' from cluster A to cluster B, what happens if a message is produced to 'orders' in cluster A?
Given MirrorMaker replicates topic 'orders' from cluster A to cluster B, what happens if a message is produced to 'orders' in cluster A?
medium📝 Predict Output Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand MirrorMaker replication behavior
MirrorMaker copies messages from source to destination topics with the same name by default.Step 2: Analyze message flow
A message produced to 'orders' in cluster A will be replicated to 'orders' in cluster B, not deleted or redirected.Final Answer:
The message is copied to 'orders' topic in cluster B -> Option BQuick Check:
Message replication = copied to same topic [OK]
Quick Trick: MirrorMaker copies messages to same topic in target cluster [OK]
Common Mistakes:
MISTAKES- Thinking messages are deleted after replication
- Assuming messages stay only in source cluster
- Believing messages go to different topics
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