DATABASE FUNDAMENTALS
BASICS OF BIG DATA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In Zookeeper, when a ____ is triggered the client receives a packet saying that the znode has changed.
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Event
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row
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watch
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value
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Explanation:
Detailed explanation-1: -A watch will be triggered and removed when the znode changes. When a watch is triggered the client receives a packet saying that the znode has changed.
Detailed explanation-2: -7. The underlying client-server protocol has changed in version of ZooKeeper. Explanation: Old pre-3.0.
Detailed explanation-3: -ZooKeeper allows distributed processes to coordinate with each other through a shared hierarchical name space of data registers, known as znodes.
Detailed explanation-4: -How many types of special znodes are present in Zookeeper? Explanation: There are two special types of znode: sequential and ephemeral.
There is 1 question to complete.