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

Hadoop Interview Questions

Questions Answers Views Company eMail

Do we need to place 2nd and 3rd data in rack 2 only?

487

Is nosql follow relational db model?

504

What are the different clustering in mahout?

What does apache mahout do?

What is the difference between apache mahout and apache spark’s mllib?

What is the roadmap for apache mahout version 1.0?

What is apache mahout?

Mention some machine learning algorithms exposed by mahout?

What are the features of apache mahout?

How can we scale apache mahout in cloud?

What is the roadmap for apache driver version one.0?

How is it different from doing machine learning in r or sas?

What square measure the options of apache mahout?

What is the distinction between apache driver and apache spark’s mllib?

How is it completely different from doing machine learning in r or sas?

Un-Answered Questions { Hadoop }

How will you implement joins in HBase?

180

What is hdfs block size?

What are the modes in which Apache Hadoop run?

840

What do you mean by replication factor?

Why is checkpointing important in hadoop?

505

State some DDL Command with brief Description?

What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?

1360

Explain what happens if, during the PUT operation, HDFS block is assigned a replication factor 1 instead of the default value 3?

Can we change the document present in hdfs?

Do I need to know hadoop to learn spark?

358

Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?

710

What is rdd lineage graph? How is it useful in achieving fault tolerance?

322

Explain the data model of hbase.

178

Which serialization libraries are supported in spark?

349

Explain how you can get exactly once messaging from kafka during data production?

560

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