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

Big Data Interview Questions

Questions Answers Views Company eMail

what is next step after mapper or maptask?

429

What is a rack?

422

Do we require two servers for the namenode and the datanodes?

527

We have already sql then why nosql?

423

What is difference between reducer and combiner?

568

What do you understand by standalone (or local) mode?

428

What type of data we should put in distributed cache? When to put the data in dc? How much volume we should put in?

440

What is pseudo-distributed mode?

608

When we send a data to a node, do we allow settling in time, before sending another data to that node?

490

Can we write map reduce program in other than java programming language. How?

504

Are job tracker and task trackers present in separate machines?

464

What is namenode?

487

what if job tracker machine is down?

476

What are the four basic parameters of a mapper?

568

In which location name node sores its metadata and why?

672

Un-Answered Questions { Big Data }

Explain bucketing in Hive?

852

Is apache spark a programming language?

306

What is spark and what is its purpose?

266

Give a brief overview of Hadoop history?

419

Can we change Replication Factor on a live cluster?

How we can check hadoop sqoop installed or not in a system?

What is Client API?

281

How to use Hive using the command line and Beeline?

944

What is Geo-Replication in Kafka?

871

What is the difference between namenode and datanode in hadoop?

495

how does hdfs ensure data integrity of data blocks stored in hadoop hdfs?

What is the role of data transfer API in HCatalog?

What happens if you don?t override the mapper methods and keep them as it is?

462

What are the different execution mode available in Pig?

1054

Can we use windows for hadoop?

477

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