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

Explain the architecture of Hadoop Pig?

717

What is the difference between Apache Pig and Hive?

574

What is the difference between Pig and MapReduce?

580

Explain Features of Pig?

634

What is Pig Storage?

574

While writing evaluate UDF, which method has to be overridden?

553

What are the different UDF’s in Pig?

614

What is Apache Hadoop? Why is Hadoop essential for every Big Data application?

862

What are the core components of Apache Hadoop?

732

What is the difference between Apache Hadoop and RDBMS?

754

How is security achieved in Apache Hadoop?

849

What is Apache Hadoop?

807

What is a “Distributed Cache” in Apache Hadoop?

731

What is the problem with small files in Apache Hadoop?

742

What is Rack Awareness in Apache Hadoop?

761

Un-Answered Questions { Hadoop }

What is replication in kafka?

494

How you can use Akka with Spark?

348

How is data represented in Spark?

293

What is the purpose of button groups?

707

Define composite key?

What are the benefits of Spark lazy evaluation?

304

How do you write your own custom SerDe ?

702

What is DataFrames?

352

What are the different Relational Operators available in pig language?

695

Explain about the replication and multiplexing selectors in Flume?

100

What are the components of spark?

262

What is kafka technology?

483

How many Reducers run for a MapReduce job?

662

How much space will the split occupy in Mapreduce?

642

What is a broker?

489

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