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A number of constants used in the client ZooKeeper API were renamed in order to reduce ________ collision.

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A number of constants used in the client ZooKeeper API were renamed in order to reduce ________ collision.

(a) value

(b) namespace

(c) counter

(d) none of the mentioned

I had been asked this question in unit test.

I need to ask this question from Introduction to Zookeeper in section ZooKeeper, Sqoop and Cassandra of Hadoop

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Best answer
Right choice is (b) namespace

To explain: ZOOKEEPER-18 removed KeeperStateChanged, use KeeperStateDisconnected instead.

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