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Hadoop: How Client communicates with HDFS?

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Hadoop: How Client communicates with HDFS?
posted Dec 29, 2014 by Amit Kumar Pandey

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1 Answer

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Client communicates with HDFS using Hadoop HDFS API.

Client applications talk to the NameNode whenever it wish to locate a file, or when it want to add/copy/move a file on HDFS. The NameNode responds the successful requests by returning a list of relevant DataNode servers. Client applications can talk directly to a DataNode, once the NameNode has provided the location of the data.

answer Dec 30, 2014 by Salil Agrawal
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