Answer / Muin Ahmad Khan

HDFS High Availability (HA) ensures that one Namenode instance can be replaced by another Namenode in the event of a failure. This is achieved through the use of an active and standby Namenode, where the active Namenode handles all client requests while the standby synchronizes with it to maintain up-to-date state information. In case of an active Namenode failure, the standby takes over.

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