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 reduce side join in mapreduce?

616

What do you mean by inputformat?

613

What are the various configuration parameters required to run a mapreduce job?

660

What is a distributed cache in mapreduce framework?

611

What do you mean by data locality?

673

How can we assure that the values regarding a particular key goes to the same reducer?

607

What is pig statistics?

527

List the relational operators in pig.

629

What are all stats classes in the java api package available?

559

List the diagnostic operators in pig.

589

Why do we need indexing?

714

What will happen in case you have not issued the command: ‘set hive.enforce.bucketing=true;’ before bucketing a table in hive in apache hive 0.x or 1.x?

773

What is hbase fsck?

214

What are different tombstone markers in hbase?

154

What is the use of get() method?

153

Un-Answered Questions { Big Data }

Why do we need spark?

278

What are the features of Standalone (local) mode?

596

What are the benefits of NoSQL over relational database?

223

What is the use of get() method?

153

What happens if rdd partition is lost due to worker node failure?

455

How can we create a hadoop cluster from scratch?

423

Why is spark fast?

295

What combiners is and when you should use a combiner in a MapReduce Job?

624

What is ZooKeeper Client?

Explain the key features of hdfs?

On which hosts does impala run?

Name Applications and Use Cases of HCatalog?

Is there any benefit of learning MapReduce, then?

293

What is safe mode in Hadoop?

961

What are the main properties of hdfs-site.xml file?

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