Big Data Interview Questions
Questions Answers Views Company eMail

What are the functionalities of jobtracer?

3

How does fault tolerance work in mapreduce?

31

What is a scarce system resource?

41




With the help of two examples name the map and reduce function purpose

29

Write a short note on the disadvantages of mapreduce

27

Explain what you understand by speculative execution

31

Explain combiners.

31

when do reducers play their role in a mapreduce task?

30

In mapreduce what is a scarce system resource? Explain?

29

What do you understand by mapreduce?

31

Explain how mapreduce works.

27

What is an input reader in reference to mapreduce?

29

How is mapreduce related to cloud computing?

62

Define the purpose of the partition function in mapreduce framework

28

What are the various input and output types supported by mapreduce?

24







Un-Answered Questions { Big Data }

Wherever (Different Directory) I run the hive query, it creates new metastore_db, please explain the reason for it?

60


Explain HCatWriter?

1


mapper or reducer?

260


what is the maximum size of the message does Kafka server can receive?

25


Explain what is kafka?

5






List out the various advantages of dataframe over rdd in apache spark?

24


What does MLlib do?

14


What is the difference between hadoop and other data processing tools?

55


Can you define udf?

3


Name some internal daemons used in spark?

40


What is spark mapvalues?

9


What is a bag in Pig Latin?

258


Is spark a mapreduce?

9


In Hive, can you overwrite Hadoop MapReduce configuration in Hive?

52


Explain what is a consumer group?

19