Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

Mention what is the data storage component used by hadoop?

406

Mention what does the text input format do?

379

Mention what daemons run on a master node and slave nodes?

441

Explain what is namenode in hadoop?

401

Explain what is a sequence file in hadoop?

424

Mention how many inputsplits is made by a hadoop framework?

533

Explain what is jobtracker in hadoop? What are the actions followed by hadoop?

369

Explain is it possible to search for files using wildcards?

428

Explain what is hadoop?

402

Explain what is sequencefileinputformat?

410

Mention how hadoop is different from other data processing tools?

374

Mention what are the most common input formats defined in hadoop?

411

Mention what is rack awareness?

356

Mention what is the difference between an rdbms and hadoop?

386

Mention what are the three modes in which hadoop can be run?

387

Un-Answered Questions { Big Data }

how you can reduce churn in ISR? When does broker leave the ISR?

566

Define cell in HBase?

159

If data is present in HDFS and RF is defined, then how can we change Replication Factor?

What is a shuffle block in spark?

246

What is the significance of using –compress-codec parameter?

what are the steps involved in decommissioning removing

969

What is the NameNode port number?

361

How do I stop flume agent?

What is the disadvantage of spark sql?

351

Can you define data lake?

457

What is configured in /etc/hosts and what is its role in setting Hadoop cluster?

464

What is lambda architecture spark?

301

How does impala compare to hive and pig?

What do you use spark for?

337

What is the difference between structured and unstructured big data?

468

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