Hadoop Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Hadoop Interview Questions

Questions Answers Views Company eMail

Write the command to copy a file from linux to hdfs?

How to copy file from HDFS to local?

How much Metadata will be created on NameNode in Hadoop?

What do you mean by metadata in Hadoop?

How to Delete directory and files recursively from HDFS?

How does HDFS Index Data blocks? Explain.

How to access HDFS?

Explain the process that overwrites the replication factors in HDFS?

Difference Between Hadoop and HDFS?

How would you import data from MYSQL into HDFS ?

Define HDFS and talk about their respective components?

What is the module in HDFS?

Tell me two most commonly used commands in HDFS?

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

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

Un-Answered Questions { Hadoop }

Does Pig give any warning when there is a type mismatch or missing field?

942

What do sorting do?

720

what are the basic parameters of a Mapper?

870

What is the disadvantage of spark sql?

379

Give the name of some components of Cassandra?

State some command line options?

Explain how indexing is done in hdfs?

Why Hadoop MapReduce?

713

What is metastore?

688

What is Sqoop Import? Explain its purpose?

If DataNode increases, then do we need to upgrade NameNode?

587

What is the function of NodeManager?

952

Define tasktracker.

688

What is difference between hive and hdfs?

669

What is skew data?

310

For More Un-Answered { Hadoop } Questions Click Here