Kafka - Monitoring and Operations
You want to compact a topic but keep deleted keys for 7 days before removal. Which configuration combination achieves this?
You want to compact a topic but keep deleted keys for 7 days before removal. Which configuration combination achieves this?
hard🚀 Application Q8 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand combined cleanup policies
Setting cleanup.policy=compact,delete enables both compaction and time-based deletion.Step 2: Use retention.ms for 7 days
Retention.ms=604800000 (7 days in ms) keeps deleted keys for that time before removal.Final Answer:
cleanup.policy=compact, delete, retention.ms=604800000 -> Option AQuick Check:
Combine compact and delete with retention.ms for delayed deletion [OK]
Quick Trick: Use cleanup.policy=compact,delete plus retention.ms for delayed deletes [OK]
Common Mistakes:
MISTAKES- Using only compact disables time-based deletion
- Setting retention.ms=0 deletes immediately
- Using delete policy alone disables compaction
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