How does HDFS Federation help HDFS Scale horizontally?

Identify the function performed by the Secondary NameNode daemon on a cluster configured to
run with a single NameNode.

Which MapReduce daemon instantiates user code, and executes map and reduce tasks on a
cluster running MapReduce v1 (MRv1)?

Choose which best describe a Hadoop cluster’s block size storage parameters once you set the
HDFS default block size to 64MB?

What is the recommended disk configuration for slave nodes in your Hadoop cluster with 6 x 2 TB
hard drives?

You install Cloudera Manager on a cluster where each host has 1 GB of RAM. All of the services
show their status as concerning. However, all jobs submitted complete without an error.
Why is Cloudera Manager showing the concerning status KM the services?

What two processes must you do if you are running a Hadoop cluster with a single NameNode
and six DataNodes, and you want to change a configuration parameter so that it affects all six
DataNodes.

You configure Hadoop cluster with both MapReduce frameworks, MapReduce v1 (MRv1) and
MapReduce v2 (MRv2/YARN). Which two MapReduce (computational) daemons do you need to
configure to run on your master nodes?

You configure you cluster with HDFS High Availability (HA) using Quorum-Based storage. You do
not implement HDFS Federation.
What is the maximum number of NameNodes daemon you should run on you cluster in order to
avoid a “split-brain” scenario with your NameNodes?

You set up the Hadoop cluster using NameNode Federation. One NameNode manages the/users
namespace and one NameNode manages the/data namespace. What happens when client tries
to write a file to/reports/myreport.txt?