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

Big Data Interview Questions

Questions Answers Views Company eMail

how Hadoop is different from other data processing tools?

376

List the configuration parameters that have to be specified when running a MapReduce job.

358

what is a sequence file in Hadoop?

403

What are the key differences between Pig vs MapReduce?

350

When is it not recommended to use MapReduce paradigm for large

360

what happens in textinformat ?

391

Explain the differences between a combiner and reducer

377

What is a TaskInstance?

393

What is the default input type in MapReduce?

381

Which directory does hadoop install to?

264

Why use hadoop?

236

What are the actions followed by hadoop?

236

What kind of hardware is best for hadoop?

225

Where are hadoop’s configuration files located and list them?

220

How jobtracker assign tasks to the tasktracker?

230

Un-Answered Questions { Big Data }

What are the data components used by Hadoop?

420

What is map in apache spark?

184

Explain the need for MapReduce while programming in Apache Pig?

544

Why is cqlsh used?

108

Tell something about the query language used in Cassandra Database?

What is Cassandra-CQL collection?

How do you integrate spark and hive?

198

Explain the lookup() operation in Spark?

149

How can we change the split size if our commodity hardware has less storage space?

377

Can you explain how it is different from doing machine learning in r or sas?

What is SSTable?

What is Flatten and what it do in PIG?

332

What is difference between hive and spark?

186

Explain Alter Table Statement in HCatalog?

What is Sqoop?

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