Which of the following commands is used for setting an environment variable in a streaming command?

Which are the advantages of the disk-level encryption in HDFS?

For a file named abc, which of the following Hadoop commands is used for setting all the permissions for owner, setting read permissions for group, and setting no permissions for other users in the system?

Which permission level is NOT allowed in HDFS authorization?

Which join operations are NOT supported by Hive?

Which command is used for creating a keytab file used in Kerberos authentication?

To create a MapReduce job, what should be coded first?

State _ between the JVMs in a MapReduce job

If you started the NameNode, then which kind of user must you be?

Which library should be used to unit test MapReduce code?

In what form is Reducer output presented?