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Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:
1. Which best describes how TextInputFormat processes input files and line breaks?
A) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReader of the
split that contains the beginning of the broken line.
B) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReaders of
both splits containing the broken line.
C) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReader of the
split that contains the end of the broken line.
D) The input file is split exactly at the line breaks, so each RecordReader will read a series of complete
lines.
E) Input file splits may cross line breaks. A line that crosses file splits is ignored.
2. Which one of the following statements describes the relationship between the NodeManager and the
ApplicationMaster?
A) The NodeManager requests resources from the ApplicationMaster
B) The ApplicationMaster starts the NodeManager in a Container
C) The ApplicationMaster starts the NodeManager outside of a Container
D) The NodeManager creates an instance of the ApplicationMaster
3. When is the earliest point at which the reduce method of a given Reducer can be called?
A) Not until all mappers have finished processing all records.
B) As soon as at least one mapper has finished processing its input split.
C) It depends on the InputFormat used for the job.
D) As soon as a mapper has emitted at least one record.
4. Consider the following two relations, A and B.
A Pig JOIN statement that combined relations A by its first field and B by its second field would produce
what output?
A) 2 cherry Jim, Chris 3 orange Terry 4 peach Brian
B) 2 cherry Jim 2 2 cherry Chris 2 3 orange Terry 3 4 peach Brian 4
C) 2 cherry 2 cherry 3 orange 4 peach
D) 2 Jim Chris 2 3 Terry 3 4 Brian 4
5. A combiner reduces:
A) The number of output files a reducer must produce.
B) The number of values across different keys in the iterator supplied to a single reduce method call.
C) The number of input files a mapper must process.
D) The amount of intermediate data that must be transferred between the mapper and reducer.
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: D | Question # 3 Answer: A | Question # 4 Answer: B | Question # 5 Answer: D |






