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 deploy job tracker other than name node?

677

Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?

440

How many maps are there in a particular job?

458

Can I set the number of reducers to zero?

397

Doesn’t google have its very own version of dfs?

481

What are the restriction to the key and value class ?

431

If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?

665

If datanodes increase, then do we need to upgrade namenode?

464

Which object can be used to get the progress of a particular job

470

Give me examples of unstructured data?

479

Explain the core methods of the reducer?

511

How to handle bad records during parsing?

452

What is the use of context object?

466

What happens if number of reducers are 0?

470

What are the primary phases of the reducer?

459

Un-Answered Questions { Big Data }

What is map in apache spark?

277

What are the window functions provided by apache tajo?

What is the default input type in MapReduce?

661

Explain the first step in big data solutions.

508

What is kafka logs?

572

How to change the name of the output file from part-r-00000 in Hadoop MapReduce?

652

What is a combiner in hadoop?

510

How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?

728

What are the components used in Hive query processor?

870

What is data ingestion pipeline?

321

What is Row Key?

981

Is apache spark worth learning?

306

When the reducers are are started in a mapreduce job?

595

Explain the important tools useful for big data?

545

Define Spark Streaming.

413

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