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Home » Unlabelled » What is the role of the namenode? | Hadoop admin questions
What is the role of the namenode? | Hadoop admin questions
The namenode is the "brain" of the Hadoop cluster and responsible for managing the distribution blocks on the system based on the replication policy. The namenode also supplies the specific addresses for the data based on the client requests.
Name node is stored meta data and editlogs.its manage keep alive all datanode using heartbeat (tcp) signal,name node provide the address of block information based on client request
maintains fsimage . Has inode information and metadata of all blocks residing in HDFS architecture.Runs Job tracker.
ReplyDeleteName node is stored meta data and editlogs.its manage keep alive all datanode using heartbeat (tcp) signal,name node provide the address of block information based on client request
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