A key of type . . . . . . . . is generated which is used later to join ngrams with their heads and tails in the reducer phase.

What is Oozie in the context of Hadoop?

A. A workflow scheduler for Hadoop jobs

B. A distributed storage system

C. A query language for Hadoop

D. A data processing engine for Hadoop

In Oozie, what is the primary purpose of a coordinator?

A. Perform data analytics in Hadoop

B. Execute MapReduce jobs

C. Manage computation resources

D. Define and manage recurrent workflows

What is an Oozie Bundle in the context of workflow automation?

A. A storage format in Hadoop

B. A query language for Hadoop

C. A collection of coordinated workflows

D. A distributed file system

In Oozie, what does the term "action" refer to?

A. A query language for Hadoop

B. A unit of work in a workflow

C. A distributed file system

D. None of the above