What does the Hadoop 'wordcount' example demonstrate?

Which command runs a MapReduce example in Hadoop?

The purpose of Hadoop benchmarks is to measure:

Which phase sorts and groups intermediate data by key?

MapReduce processes data in the form of:

Which component ensures job completion if a node fails?

What does speculative execution in Hadoop do?

Intermediate outputs in MapReduce are written to:

In a WordCount program, the mapper emits:

Which language interface is used in Hadoop Streaming?

Which of the following is required when using the Pipes interface?

What is the role of the Context object in MapReduce?

A successful MapReduce job stores final output in:

What happens if the output directory already exists in HDFS before running a job?

Which file defines Hadoop job configuration?