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Big Data Interview Questions
Questions Answers Views Company eMail

What is a 'block' in HDFS?

 680

What is Derby database?

 626

How many Daemon processes run on a Hadoop system?

 825

What are the limitations of importing RDBMS tables into Hcatalog directly?

 668

How the Client communicates with HDFS?

 714

What is NoSQL?

 641

What is Row Key?

 647

What is a Task instance in Hadoop? Where does it run?1

 613

What does the overwrite keyword denote in Hive load statement?

 1 1913

What is IdentityMapper?

 639

Why do we use Hadoop?

 632

what is the typical block size of an HDFS block?

 645

What is Hadoop Custom partitioner ?

 724

What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?

 943

What stored in HDFS?

 617

Un-Answered Questions { Big Data }

What are shared variables in Apache Spark?

224

Explain the functionalities of the nagios in ambari?

55

Explain about the different types of trformations on dstreams?

188

Is java required for spark?

184

What is difference between reducer and combiner?

262




What is LazyOutputFormat in MapReduce?

377

How do I download adobe spark?

275

Explain the terms Spark Partitions and Partitioners?

220

What is the procedure of data storage in cassandra?

54

Explain the features of pseudo mode?

412

What is map side join?

185

Which database is used in hadoop?

228

What is a bag in Pig Latin?

592

Why Mapreduce output written in local disk?

609

what are the most common input formats defined in Hadoop?

355

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