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

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

How to resolve small file problem in hdfs?

1022

what factors the block size takes before creation?

1091

Which are the two types of 'writes' in HDFS?

1267

Explain use cases where SequenceFile class can be a good fit?

987

Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?

1117

What is difference between regular file system and HDFS?

1090

What is rack-aware replica placement policy?

1065

What is Hadoop?

1 1683

Are Namenode and job tracker on the same host?

1490

What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?

1139

What is HDFS Federation?

1027

What are watches?

1064

Explain the Job OutputFormat?

997

Virtual Box & Ubuntu Installation?

1043

What is the difference between HDFS and NAS ?

1417

Post New Apache Hadoop Questions

Un-Answered Questions { Apache Hadoop }

What are channel selectors?

1083

How to enable recycle bin in hadoop?

798

Explain the master class and the output class do?

688

What is the use of Combiner?

1015

What is Rack awareness?

1040

What is zookeeper in hadoop?

688

Input Split & Record Reader and what they do?

1077

What is the difference between SQL and NoSQL?

1134

How to change replication factor of files already stored in HDFS?

1036

Define a namenode?

706

What is salary of hadoop developer?

731

Is it possible to provide multiple inputs to hadoop? If yes, explain.

709

how would you modify that solution to only count the number of unique words in all the documents?

1011

How will you make changes to the default configuration files?

1010

What is formatting of the dfs?

860

For More Un-Answered { Apache Hadoop } Questions Click Here