On a cluster running MapReduce v1 (MRv1), the value of the
mapred.tasktracker.map.tasks.maximum configuration parameter in the mapred-site.xml file
should be set to:

Which command does Hadoop offer to discover missing or corrupt HDFS data?

Your cluster implements HDFS High Availability (HA). You two NameNodes are named nn01 and
nn02. What occurs when you execute the command:
Hdfs haadmin -failover nn01 nn02

You’ve configured your cluster with HDFS Federation. One NameNode manages the /data
namesapace and another Name/Node manages the /reports namespace. How do you configure a
client machine to access both the /data and the /reports directories on the cluster?

What does CDH packaging do on install to facilitate Kerberos security setup?

Your Hadoop cluster contains nodes in three racks. Choose which scenario results if you leave the
dfs.hosts property in the NameNode’s configuration file empty (blank)?

What metadata is stored on a DataNode when a block is written to it?

Which three processes does HDFS High Availability (HA) enable on your cluster?

Identify which two daemons typically run each slave node in a Hadoop cluster running MapReduce
v1 (MRv1)

Identify four characteristics of a 300MB file that has been written to HDFS with block size of
128MB and all other Hadoop defaults unchanged?