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

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

What is a block and block scanner in HDFS?

1058

What is compute and Storage nodes?

1051

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

1007

How can you overwrite the replication factors in HDFS?

1275

What are the modules that constitute the Apache Hadoop 2.0 framework?

1042

Knox and Hadoop Development Tools?

969

In which location Name Node stores its Metadata and why?

1420

Is a job split into maps?

1071

What are different hdfs dfs shell commands to perform copy operation?

1092

If a data Node is full how it's identified?

978

What are the site-specific configuration files in Hadoop?

1129

On what basis data will be stored on a rack?

1174

How is HDFS fault tolerant?

1075

How to Administering Hadoop?

945

What are the main components of a Hadoop Application?

1076

Post New Apache Hadoop Questions

Un-Answered Questions { Apache Hadoop }

What is Derby database?

950

What if a namenode has no data?

700

What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?

827

What happens to a NameNode that has no data?

1614

What are the stable versions of Hadoop?

1054

What happens to job tracker when namenode is down?

715

How many maximum jvm can run on a slave node?

721

Explain the hadoop-core configuration?

730

What is commodity hardware?

706

What are the two main parts of the hadoop framework?

699

What is the function of ApplicationMaster?

1006

What is the purpose of dfsadmin tool?

1287

How to write a Custom Key Class?

966

What is Apache Hadoop?

892

What if rack 2 and datanode fails?

1097

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