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Big Data Interview Questions
Questions Answers Views Company eMail

How much Metadata will be created on NameNode in Hadoop?

 42

What do you mean by metadata in Hadoop?

 30

How to Delete directory and files recursively from HDFS?

 77

How does HDFS Index Data blocks? Explain.

 19

How to access HDFS?

 32

Explain the process that overwrites the replication factors in HDFS?

 40

Difference Between Hadoop and HDFS?

 49

How would you import data from MYSQL into HDFS ?

 30

Define HDFS and talk about their respective components?

 34

What is the module in HDFS?

 23

Tell me two most commonly used commands in HDFS?

 30

What is a block in HDFS? what is the default size in Hadoop 1 and Hadoop 2? Can we change the block size?

 46

HDFS is used for applications with large data sets, not why Many small files?

 22

What is impala?

 122

Why we need impala hadoop?

 37

Un-Answered Questions { Big Data }

What is the purpose of button groups?

387

Does hadoop always require digital data to process?

767

What is the difference between client mode and cluster mode in spark?

203

What is the use of Hcatalog?

514

How can we see all the clusters that are available in Ambari?

123




How can one set space quota in Hadoop (HDFS) directory?

17

What kind of applications is supported by Apache Hive?

444

What is the method to create a data frame?

223

What is distributed copy (distcp)?

252

Can you join multiple fields in Apache

316

Does impala use caching?

38

Explain the core components of Flume?

64

Why comparison of types is important for MapReduce?

673

Explain the different logging levels in cassandra.

51

What is pig statistics?

291

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