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What alternate way does HDFS provides to recover data in case a Namenode, without backup, fails and cannot be recovered?
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Answer Posted / Suraj Shukla
In the event of a NameNode failure without a backup, Hadoop provides an alternative recovery mechanism called the standby NamesNode (NN2). NN2 maintains a read-only copy of the file system namespace and metadata from the active Namenode. In case of failure, the active Namenode's role can be transferred to NN2.
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