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?

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

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