Explanation:One usage of the snapshot feature may be to roll back a corrupted HDFS instance to a previously known good point in time. 7. Automatic restart and ____________ of the NameNode software to another machine is not supported.
A. failover
B. end
C. scalability
D. All of the mentioned
Answer:A
Explanation:One usage of the snapshot feature may be to roll back a corrupted HDFS instance to a previously known good point in time. 7. Automatic restart and ____________ of the NameNode software to another machine is not supported.
A. failover B. end C. scalability D. All of the mentioned
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.