In Hadoop 2.0, which one of the following statements is true about a standby NameNode?

In Hadoop 2.0, which one of the following statements is true about a standby NameNode?

The Standby NameNode:
A . Communicates directly with the active NameNode to maintain the state of the active NameNode.
B . Receives the same block reports as the active NameNode.
C . Runs on the same machine and shares the memory of the active NameNode.
D . Processes all client requests and block reports from the appropriate DataNodes.

View Answer

Answer: B