You are the hadoop fs –put command to add a file “sales.txt” to HDFS. This file is small enough
that it fits into a single block, which is replicated to three nodes in your cluster (with a replication
factor of 3). One of the nodes holding this file (a single block) fails. How will the cluster handle the
replication of this file in this situation/
A.
The cluster will re-replicate the file the next time the system administrator reboots the
NameNode daemon (as long as the file’s replication doesn’t fall two)
B.
This file will be immediately re-replicated and all other HDFS operations on the cluster will halt
until the cluster’s replication values are restored
C.
The file will remain under-replicated until the administrator brings that nodes back online
D.
The file will be re-replicated automatically after the NameNode determines it is under replicated
based on the block reports it receives from the DataNodes