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

Big Data Interview Questions

Questions Answers Views Company eMail

In MapReduce Data Flow, when Combiner is called?

723

Differentiate Reducer and Combiner in Hadoop MapReduce?

731

What is the key- value pair in MapReduce?

850

A number of combiners can be changed or not in MapReduce?

716

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

699

What is the need of MapReduce in Hadoop?

685

What does a 'MapReduce Partitioner' do?

739

What is the difference between Reducer and Combiner in Hadoop MapReduce?

733

What is Data Locality in Hadoop?

721

What is KeyValueTextInputFormat in Hadoop MapReduce?

861

What is Mapper in Hadoop MapReduce?

798

How to set mappers and reducers for MapReduce jobs?

682

How to sort intermediate output based on values in MapReduce?

699

Can we set the number of reducers to zero in MapReduce?

759

Where sorting is done on mapper node or reducer node in MapReduce?

735

Un-Answered Questions { Big Data }

What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?

502

What is the use of rdd in spark?

286

What happens in text format?

497

What is flume instagram?

What is the difference between map and reduce?

700

When we are using queries instead of scripting?

773

What is spark good for?

359

What is cqlsh?

Does Apache Spark provide check pointing?

417

What are the capabilities of kafka?

602

Hdfs stores data using commodity hardware which has higher chances of failures. So, how hdfs ensures the fault tolerance capability of the system?

What is spark slang for?

300

What is difference between spark and scala?

272

How do we create rdds in spark?

575

what Hive is composed of ?

729

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