Big Data Interview Questions
Questions Answers Views Company eMail

What is Hadoop Map Reduce ?

41

what does the text input format do?

41

What happens when a datanode fails ?

44




In Hadoop, which file controls reporting in Hadoop?

40

how can you debug Hadoop code?

41

For a job in Hadoop, is it possible to change the number of mappers to be created?

52

What are the primary phases of a Reducer?

36

how indexing in HDFS is done?

37

What is the role of a MapReduce partitioner?

40

Is it important for Hadoop MapReduce jobs to be written in Java?

34

what job does the conf class do?

44







Un-Answered Questions { Big Data }

What are the primary phases of a Reducer?

36


What is dynamic partitioning and when is it used?

54


Can we change the body of the flume event?

5


Does Apache Flume provide support for third party plug-ins?

5


How to write a Custom Key Class?

128






how JobTracker schedules a task ?

36


What is a MapFile?

48


What alternate way does HDFS provides to recover data in case a Namenode

191


Differentiate between the physical plan and logical plan in Pig script?

102


How many JVMs run on a slave node?

159


What is difference between memory channel and file channel in flume?

5


How to use Hive using the command line and Beeline?

55


Explain about the scalar datatypes in Apache Pig?

119


What is Derby database?

150


What happens to a NameNode that has no data?

453