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 you define udf?

423

What is the difference between an inputsplit and a block?

629

What is the purpose of context object?

430

Can you explain sequence file in hadoop?

404

What is the use of recordreader in hadoop?

419

What is data cleansing?

449

What is the number of default partitioner in hadoop?

441

Can you explain hadoop streaming?

420

List out some common problems faced by data analyst?

450

What is job tracker role in hadoop?

471

What do you understand by a closure in scala?

487

Can you explain textinformat?

497

List some use cases where classification machine learning algorithms can be used.

463

How many daemon processes run on a hadoop cluster?

456

Which scala library is used for functional programming?

454

Un-Answered Questions { Big Data }

What are complex data types in pig?

578

How to write a custom partitioner for a Hadoop MapReduce job?

650

Explain Cqlsh?

What is external shuffle service in spark?

297

Explain what is memtable in cassandra?

Explain countByValue() operation in Apache Spark RDD?

265

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

310

How can Spark be connected to Apache Mesos?

327

What is salting in spark?

415

What database are supported by Hive?

705

What is heartbeat in hadoop?

426

How can you control the mapping between SQL data types and Java types?

How much Metadata will be created on NameNode in Hadoop?

what is SStable consist of?

How to insert records in apache tajo?

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