Kafka - Multi-Datacenter and Replication
You want to replicate only messages with key starting with 'user_' from topic 'events' across data centers. Which MirrorMaker feature helps achieve this?
You want to replicate only messages with key starting with 'user_' from topic 'events' across data centers. Which MirrorMaker feature helps achieve this?
hard📝 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Understand filtering capabilities
MirrorMaker supports custom plugins to filter messages based on keys or content.Step 2: Identify correct method for key-based filtering
Setting 'topics' or consumer group ID cannot filter by message key; producer config does not filter keys.Final Answer:
Using a custom message filter plugin -> Option AQuick Check:
Key-based filtering = custom plugin [OK]
Quick Trick: Use custom filter plugin for key-based replication [OK]
Common Mistakes:
MISTAKES- Trying to filter keys via topic names
- Using producer config for filtering
- Confusing consumer group ID with filtering
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