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

Big Data Interview Questions

Questions Answers Views Company eMail

Can we change the document present in hdfs?

What does rack awareness algorithm means and why is it utilized as a part of hadoop?

489

What does rack awareness algorithm means?

537

What does the high availability of a name-node means? How is it accomplished?

455

What does name-node mean in hadoop?

515

What is check pointing in hadoop?

483

What does secondary name-node means?

487

What type of data hadoop can handle ?

477

What does the high availability of a name-node means?

483

What does block mean?

488

What do you think about the speculative execution?

486

What did mean by data-node?

485

How to use combiner in hadoop ?

489

List few benefits of spark over map reduce?

316

Can you define rdd?

323

Un-Answered Questions { Big Data }

What is the default port of presto?

Explain how does hbase actually delete a row?

171

Explain HCatalog Create Table CLI along with its syntax?

What is the message broker?

529

What do you mean by taskinstance?

802

What is the purpose of ‘dump’ keyword in Pig?

677

What services run after running hbase job?

172

Explain Thrift & Protocol Buffers Vs. Avro?

what is pig?

886

Does cassandra support acid tractions?

If I create a folder in HDFS, will there be metadata created corresponding to the folder? If yes, what will be the size of metadata created for a directory?

Is it possible to run Apache Spark without Hadoop?

295

How to setup the local repository manually?

Explain the wordcount implementation via hadoop framework ?

765

How to restart NameNode or all the daemons in Hadoop HDFS?

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