You are running a Hadoop cluster with a NameNode on host my name node, a secondary
NameNode on host my secondary name node and several DataNodes. Which best
describes how you determine when the last checkpoint happened?
A.
Execute hdfs dfsadmin –saveNamespace on the command line which returns to you the
last checkpoint value in fstime file
B.
Connect to the web UI of the Secondary NameNode (http://mysecondary:50090/) and
look at the “Last Checkpoint” information
C.
Execute hdfs namenode –report on the command line 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
Explanation: