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

Hadoop General Interview Questions

Questions Answers Views Company eMail

Can you define a checkpoint?

518

Which language is more suitable for text analytics? R or python?

480

Can you explain commodity hardware?

449

How can native libraries be included in yarn jobs?

515

How to do ‘map’ and ‘reduce’ works?

605

Can you explain bloommapfile.

501

Why is checkpointing important in hadoop?

503

What happens when two clients try to access the same file in the hdfs?

501

What do you know about the speculative execution?

496

What are the differences between hadoop 1 and hadoop 2?

468

Why do the nodes are removed and added frequently in a hadoop cluster?

503

What is a namenode?

429

Can hadoop handle streaming data?

486

What is hadoop? Name the main components of a hadoop application?

472

What do you know about yarn?

451

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Un-Answered Questions { Hadoop General }

What is winutils hadoop?

463

What is the block size in Hadoop?

470

How namenode handles data node failures?

566

How is the splitting of file invoked in Hadoop framework?

562

What are the core components of Hadoop?

554

Give me examples of unstructured data?

523

What is Reducer in Hadoop?

594

Can you define inputsplit in hadoop?

514

What is a Heartbeat in Hadoop?

602

What happen on the namenode when a client tries to read a data file?

501

What daemons run on master nodes?

515

What are the network requirements for hadoop?

520

What does rack awareness algorithm means?

528

What is Chain Mapper?

600

After increasing the replication level, I still see that data is under replicated. What could be wrong?

506

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