June 2019
Beginner to intermediate
360 pages
10h 55m
English
Content preview from Big Data Simplified
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Introducing MapReduce | 95
7. Can the number of reducers be set to zero?
a. Yes
b. No
c. Not applicable
d. None of the above
8. Where is the Map Output (intermediate
key-value data) stored?
a. HDFS
b. Local File System
c. Name Node
d. Data Node
9. When does the Reduce start in a Map
Reduce?
a. Before any Map job starts
b. When first Map job is completed
c. When all the child Map job is completed
d. None of the above
Short-answer Type Questions (5 Marks Questions)
1. Name the most common input formats
defined in Hadoop. Which one is default?
2. Rearrange the main configuration param-
eters that the user need to specify to run
Mapreduce ...
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