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 are the applications of Apache ZooKeeper?

Explain Zookeeper Leader election?

Explain the term HCatalog?

Why HCatalog?

How to create and manage a view in HCatalog?

Explain Alter Table Statement in HCatalog?

How can we drop a table in HCatalog?

Which command do we use to insert data in HCatalog?

Explain HCatalog Architecture in Brief?

HCatalog helps to Integrate Hadoop with everything. Explain?

Explain how HCatalog enables right tool for right Job?

Explain HCatLoader and HCatStorer APIs?

Explain Drop View Statement along with syntax?

State some command line options?

Explain HCatOutputFormat?

Un-Answered Questions { Hadoop }

Explain what happens in text format?

611

What size is recommended for each node?

214

What are the similarities and differences between Apache Flume and Apache Kafka?

107

Who is intended audience to learn avro?

What is the InputSplit in map reduce ?

1075

Explain fold() operation in spark?

319

What do you understand by hive?

726

What is the driver program in spark?

312

Explain what is sqoop in Hadoop ?

770

What is the task of Spark Engine

340

What is flatmap in apache spark?

340

Is hadoop required for data science?

721

Why aggregation cannot be done in Mapper?

605

What is the difference between hadoop and spark?

296

Who invented spark?

418

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