Cloudera
CCA-500 · Question #28
On a cluster running MapReduce v2 (MRv2) on YARN, a MapReduce job is given a directory of 10 plain text files as its input directory. Each file is made up of 3 HDFS blocks. How many Mappers will run?
Sign in or unlock CCA-500 to reveal the answer and full explanation for question #28. The question stem and answer options stay visible for context.
Resource Management
Question
On a cluster running MapReduce v2 (MRv2) on YARN, a MapReduce job is given a directory of 10 plain text files as its input directory. Each file is made up of 3 HDFS blocks. How many Mappers will run?
Options
- AWe cannot say; the number of Mappers is determined by the ResourceManager
- BWe cannot say; the number of Mappers is determined by the developer
- C30
- D3
- E10
- FWe cannot say; the number of mappers is determined by the ApplicationMaster
Unlock CCA-500 to see the answer
You've previewed enough free CCA-500 questions. Unlock CCA-500 for full answers, explanations, the timed quiz mode, progress tracking, and the master PDF. Question stem and options stay visible so you can still see what's on the exam.
Topics
#Mapper count#input splits#HDFS blocks#MapReduce input