Download Hortonworks : HADOOP-PR000007 Questions & Answers as PDF & Test Software
Updated: May 31, 2026
No. of Questions: 110 Questions & Answers with Testing Engine
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Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:
1. A client application creates an HDFS file named foo.txt with a replication factor of 3. Identify which best
describes the file access rules in HDFS if the file has a single block that is stored on data nodes A, B and
C?
A) The file can be accessed if at least one of the data nodes storing the file is available.
B) Each data node stores a copy of the file in the local file system with the same name as the HDFS file.
C) Each data node locks the local file to prohibit concurrent readers and writers of the file.
D) The file will be marked as corrupted if data node B fails during the creation of the file.
2. In a MapReduce job, you want each of your input files processed by a single map task. How do you
configure a MapReduce job so that a single map task processes each input file regardless of how many
blocks the input file occupies?
A) Increase the parameter that controls minimum split size in the job configuration.
B) Set the number of mappers equal to the number of input files you want to process.
C) Write a custom FileInputFormat and override the method isSplitable to always return false.
D) Write a custom MapRunner that iterates over all key-value pairs in the entire file.
3. Which one of the following statements describes the relationship between the NodeManager and the
ApplicationMaster?
A) The NodeManager creates an instance of the ApplicationMaster
B) The NodeManager requests resources from the ApplicationMaster
C) The ApplicationMaster starts the NodeManager outside of a Container
D) The ApplicationMaster starts the NodeManager in a Container
4. Review the following data and Pig code:
What command to define B would produce the output (M,62,95l02) when invoking the DUMP operator on
B?
A) B= FOREACH A BY (gender = = 'M' AND zip = = '95102');
B) B = FILTER A BY (zip = = '95102' AND gender = = M");
C) B = JOIN A BY (gender = = 'M' AND zip = = '95102');
D) B= GROUP A BY (zip = = '95102' AND gender = = 'M');
5. Determine which best describes when the reduce method is first called in a MapReduce job?
A) Reducers start copying intermediate key-value pairs from each Mapper as soon as it has completed.
The reduce method is called as soon as the intermediate key-value pairs start to arrive.
B) Reducers start copying intermediate key-value pairs from each Mapper as soon as it has completed.
The programmer can configure in the job what percentage of the intermediate data should arrive before
the reduce method begins.
C) Reduce methods and map methods all start at the beginning of a job, in order to provide optimal
performance for map-only or reduce-only jobs.
D) Reducers start copying intermediate key-value pairs from each Mapper as soon as it has completed.
The reduce method is called only after all intermediate data has been copied and sorted.
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: C | Question # 3 Answer: A | Question # 4 Answer: B | Question # 5 Answer: D |
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