Explanation:If the NameNode machine fails, manual intervention is necessary. 8. HDFS, by default, replicates each data block _____ times on different nodes and on at least ____ racks.
A. 3,2
B. 1,2
C. 2,3
D. All of the mentioned
Answer:A
Explanation:If the NameNode machine fails, manual intervention is necessary. 8. HDFS, by default, replicates each data block _____ times on different nodes and on at least ____ racks.
A. 3,2 B. 1,2 C. 2,3 D. All of the mentioned
Explanation:HDFS has a simple yet robust architecture that was explicitly designed for data reliability in the face of faults and failures in disks, nodes and networks. 9. _________ stores its metadata on multiple disks that typically include a non-local file server.