Hi Arthur, In HDFS there will be block level replication, In case of total failure of a datanode the lost blocks will get under replicated hence the namenode will create copy of these under replicated blocks on some other datanode.
BR, Harshit On Wed, Dec 17, 2014 at 11:35 AM, [email protected] < [email protected]> wrote: > > Hi, > > If each of my datanode servers has 8 hard disks (a 10-node cluster) and I > use the default replication factor of 3, how will Hadoop handle it when a > datanode with total hardware failure suddenly? > > Regards > Arthur > -- Harshit Mathur
