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

Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)

Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)

Hadoop Interview Questions

Questions Answers Views Company eMail

What is BloomMapFile?

737

Highlight the difference between group and Cogroup operators in Pig?

858

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

971

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

712

Differentiate between Pig Latin and Pig Engine?

847

What is the function of co-group in Pig?

788

Explain about the scalar datatypes in Apache Pig?

896

Explain the uses of PIG?

984

What are the complex datatypes in pig?

982

What does illustrate do in Apache Pig?

927

What is UDF?

913

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

1055

What is the usage of foreach operation in Pig scripts?

874

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

938

What is the MapReduce plan in pig architecture?

1054

Un-Answered Questions { Hadoop }

Can a partition be archived? What are the advantages and Disadvantages?

756

Which files are used by the startup and shutdown commands?

720

What is the use of “void close()” method?

What are the important features of hadoop?

442

Can you explain bloommapfile.

453

Is spark built on top of hadoop?

315

What roles do Replicas and the ISR play?

546

What are the tools that are needed to build ambari?

Explain ALTER Table statement in Hive?

708

What does name-node mean in hadoop?

475

Explain a simple Map/Reduce problem.

719

How to save RDD?

313

Explain about the smb join in hive?

724

Why are spark transformations lazy?

292

Apache Flume support third-party plugins also?

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