The need for data replication can arise in various scenarios like
A)replication factor is changed
B)datanode goes down
C)data blocks get corrupted
D)all of the above

Question

Quizplus · Accepted Answer

Data replication is necessary in scenarios where the replication factor is changed, a datanode goes down, or data blocks get corrupted, to ensure data availability and reliability.

The Need for Data Replication Can Arise in Various Scenarios