You wrote a map function that throws a runtime exception when it encounters a control character
in input data. The input supplied to your mapper contains twelve such characters totals, spread
across five file splits. The first four file splits each have two control characters and the last split has
four control characters.

Indentify the number of failed task attempts you can expect when you run the job with
mapred.max.map.attempts set to 4:

Assuming default settings, which best describes the order of data provided to a reducer’s reduce
method:

How are keys and values presented and passed to the reducers during a standard sort and shuffle
phase of MapReduce?

Indentify the utility that allows you to create and run MapReduce jobs with any executable or script
as the mapper and/or the reducer?

Which describes how a client reads a file from HDFS?

You need to run the same job many times with minor variations. Rather than hardcoding all job
configuration options in your drive code, you’ve decided to have your Driver subclass
org.apache.hadoop.conf.Configured and implement the org.apache.hadoop.util.Tool interface.
Indentify which invocation correctly passes.mapred.job.name with a value of Example to Hadoop?

You have just executed a MapReduce job. Where is intermediate data written to after being
emitted from the Mapper’s map method?