Apache Hadoop Interview Questions
Questions Answers Views Company eMail

What is a block and block scanner in HDFS?

866

What is compute and Storage nodes?

858

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

827

How can you overwrite the replication factors in HDFS?

1063

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

824

Knox and Hadoop Development Tools?

762

In which location Name Node stores its Metadata and why?

1200

Is a job split into maps?

881

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

914

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

768

What are the site-specific configuration files in Hadoop?

869

On what basis data will be stored on a rack?

954

How is HDFS fault tolerant?

860

How to Administering Hadoop?

751

What are the main components of a Hadoop Application?

872


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Un-Answered Questions { Apache Hadoop }

What does /etc /init.d do?

540


Define a commodity hardware? Does commodity hardware include ram?

590


What is the default replication factor?

808


What do the master class and the output class do?

507


How many maximum jvm can run on a slave node?

527


What is Hadoop Custom partitioner ?

854


Explain the benefits of block transfer?

647


What other technologies have you used in hadoop sta ck?

838


Explain the hadoop-core configuration?

524


What is the relation between job and task in hadoop?

480


What is Hadoop serialization?

525


Explain the features of stand alone (local) mode?

482


Define a task tracker?

487


Can NameNode and DataNode be a commodity hardware?

1526


How to keep HDFS cluster balanced?

927