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Hadoop Interview Questions
Questions Answers Views Company eMail

What is BloomMapFile?

 485

Highlight the difference between group and Cogroup operators in Pig?

 522

How would you diagnose or do exception handling in the pig?

 626

What are the relation operations in Pig? Explain any two with examples?

 462

Differentiate between Pig Latin and Pig Engine?

 566

What is the function of co-group in Pig?

 559

Explain about the scalar datatypes in Apache Pig?

 554

Explain the uses of PIG?

 684

What are the complex datatypes in pig?

 667

What does illustrate do in Apache Pig?

 617

What is UDF?

 612

What are the different types of UDF's in Java supported by Apache Pig?

 609

What is the usage of foreach operation in Pig scripts?

 564

How will you merge the contents of two or more relations and divide a single relation into two or more relations?

 669

What is the MapReduce plan in pig architecture?

 678

Un-Answered Questions { Hadoop }

Does hadoop install spark?

194

What is a distributed cache in mapreduce framework?

346

What is a Sparse Vector?

210

What is session in Cassandra?

105

What do you understand by Filters in HBase?

105




What are channel selectors?

661

what is the typical block size of an HDFS block?

645

Tell something about the query language used in Cassandra Database?

52

Is spark part of hadoop?

203

How to resolve IOException: Cannot create directory

667

What is the difference between persist

230

How many types of NoSQL databases? Give some examples.

154

What is the advantage of a Parquet file?

215

How apache impala works with cdh?

45

What load do concurrent queries produce on the namenode?

43

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