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?

792

What is the difference between Apache Pig and Hive?

657

What is the difference between Pig and MapReduce?

653

Explain Features of Pig?

709

What is Pig Storage?

643

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

608

What are the different UDF’s in Pig?

691

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

967

What are the core components of Apache Hadoop?

829

What is the difference between Apache Hadoop and RDBMS?

855

How is security achieved in Apache Hadoop?

963

What is Apache Hadoop?

900

What is a “Distributed Cache” in Apache Hadoop?

822

What is the problem with small files in Apache Hadoop?

839

What is Rack Awareness in Apache Hadoop?

859

Un-Answered Questions { Hadoop }

What language is apache kafka written in?

586

How do users interact with HDFS in Apache Pig ?

800

What is the purpose of exploding in hive?

718

Discuss the various running mode of Apache Spark?

310

What happens if the quantity of the reducer is 0 in mapreduce?

650

Can the name of a view be same as the name of a hive table?

810

What are the key points of data model of Cassandra?

What is an Agent?

What is the meaning of speculative execution in Hadoop? Why is it important?

1092

What do you understand by column family?

100

What port does spark use?

330

Mention how can you stop a partition form being queried?

1158

What are some of the characteristics of Hadoop framework?

489

Rack awareness of Namenode?

916

Explain the features of fully distributed mode?

674

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