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

Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)

Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)

Hadoop Interview Questions

Questions Answers Views Company eMail

Can you explain combiner?

446

List of some best tools that can be useful for data-analysis?

436

What is the best practice to deploy the secondary name node?

459

What are the tools used in big data?

441

Can you explain indexing?

421

Can you define a checkpoint?

477

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

439

Can you explain commodity hardware?

418

How can native libraries be included in yarn jobs?

485

How to do ‘map’ and ‘reduce’ works?

578

Can you explain bloommapfile.

459

Why is checkpointing important in hadoop?

475

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

461

What do you know about the speculative execution?

466

What are the differences between hadoop 1 and hadoop 2?

442

Un-Answered Questions { Hadoop }

Explain Catalyst framework?

361

Which language is better for spark?

295

What is memtable?

106

Does Apache Sqoop have a default database?

What is broadcast variable?

369

Where is spark rdd?

272

What is difference between hive and hdfs?

636

What are the different functions available in pig latin language?

582

What is a "map" in Hadoop?

801

What is a “Distributed Cache” in Apache Hadoop?

790

Explain about the smb join in hive?

737

List down the languages supported by Apache Spark?

293

What is the difference between RDBMS with Hadoop MapReduce?

805

How can we import data from particular row or column? What is the destination types allowed in Sqoop import command?

What is the problem in having lots of small files in hdfs?

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