A telecommunications company has a substantial amount of data. This data is being created by
network elements within their environment.
The company wants to change the way the network elements Call Detail Records (CDR) are
stored and analyzed. The existing infrastructure consolidates all of the CDRs into a table structure,
and then ingests them into a large database. Once ingested, a query engine accesses the
database and performs analysis on these files. The system is functional; however, since the
amount of CDRs generated will increase exponentially over the next year, the company is open to
alternatives for storing and analyzing these records.
In evaluating alternatives, the key requirements are to reduce cost, the amount of storage, and the
amount of time to analyze the data. The customer would like to use Hadoop to analyze the CDRs.
After you have conducted an assessment of the workflow, you have recommended an Isilon
Cluster to work within the Hadoop environment.
What would be the best recommendation to the customer for the workflow of Hadoop with Isilon?

A.
Copy the CDRs from the source to an Isilon cluster with NFS, then use Hadoop to analyze the
information directly over HDFS

B.
Write the CDRs directly to an Isilon cluster with an NFS mount, then use Hadoop to analyze the
information directly over HDFS

C.
Copy the CDRs from the source to an Isilon cluster with NFS, then ingest the information into
Hadoop for analysis

D.
Write the CDRs directly to an Isilon cluster with an NFS mount, then ingest the information into
Hadoop with NFS then analyze

Explanation: