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A ___________ server is a machine that keeps a copy of the state of the entire system and persists this information in local log files.

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A ___________ server is a machine that keeps a copy of the state of the entire system and persists this information in local log files.

(a) Master

(b) Region

(c) Zookeeper

(d) All of the mentioned

I had been asked this question by my school teacher while I was bunking the class.

The query is from The ZooKeeper Service in section ZooKeeper, Sqoop and Cassandra of Hadoop

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Best answer
Correct choice is (c) Zookeeper

Best explanation: A very large Hadoop cluster can be supported by multiple ZooKeeper servers.

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