You Are Running a Hadoop Cluster with a NameNode on Host

Multiple Choice

You are running a Hadoop cluster with a NameNode on host mynamenode, a secondary NameNode on host mysecondarynamenode and several DataNodes. Which best describes how you determine when the last checkpoint happened?

A) Execute hdfs namenode -report on the command line and look at the Last Checkpoint information
B) Execute hdfs dfsadmin -saveNamespace on the command line which returns to you the last checkpoint value in fstime file
C) Connect to the web UI of the Secondary NameNode (http://mysecondary:50090/) and look at the "Last Checkpoint" information
D) Connect to the web UI of the NameNode (http://mynamenode:50070) and look at the "Last Checkpoint" information