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What do you mean by the High Availability of a NameNode in Hadoop HDFS?
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Answer / Manju Singh
High Availability (HA) of a NameNode in Hadoop HDFS refers to the capability of the system to maintain its functionality even when the Active NameNode fails. This is achieved through the use of two NameNodes: the Active NameNode, responsible for handling client requests and managing the filesystem, and the Standby NameNode, which monitors the Active NameNode's health and can take over in case of failure. The HA configuration ensures that the system remains functional with minimal data loss.
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