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What is the role of Zookeeper in Kafka?

Spark/Big Datamedium0.4 min readPremium
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Asked at 1 company
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questions in Spark/Big Data
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1,863
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Asked at these companies
Fragma Data Systems
Key Concepts Tested
partition
Expert AnswerPremium
72 wordsInterview-ready
**Zookeeper (pre-KRaft)**: (1) Broker registration and metadata. (2) Leader election for partitions. (3) Consumer group coordination (offsets, rebalance). (4) Topic config. **KRaft (Kafka 3.x)**: Kafka Raft; replaces Zookeeper. Metadata in Kafka itself. Simpler ops. **Why It Mattered**: Zookeeper was single point of coordination. Ensemble of 3, 5, or 7 for HA. **Scalability Trade-offs**: Zookeeper session timeouts cause rebalance....
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