EMERGING TRENDS IN SOFTWARE ENGINEERING
CLOUD COMPUTING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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For which of the following operations is NO communication with the NameNode required?
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A client writing a file to HDFS.
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A client requesting the filename of a given block of data.
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A client reading a block of data from the cluster.
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A client reading a file from the cluster.
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Explanation:
Detailed explanation-1: -2.1. Hadoop HDFS Data Write Operation. To write a file in HDFS, a client needs to interact with master i.e. namenode (master). Now namenode provides the address of the datanodes (slaves) on which client will start writing the data.
Detailed explanation-2: -Accepted Answers: For which of the following operations is NO communication with the NameNode required? A client writing a file to HDFS.
Detailed explanation-3: -Client communicates with the NameNode in a Hadoop cluster using the RPC protocol. Similarly, DataNodes and the NameNode in the cluster exchange data using the RPC protocol.
There is 1 question to complete.