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 }

Is spark built on top of hadoop?

301

What is the meaning of compaction in hbase?

156

Describe JMX?

What is the significance of ‘IF EXISTS” clause while dropping a table?

661

By Default, how many partitions are created in RDD in Apache Spark?

283

Explain what are the basic parameters of a mapper?

763

According to IBM, what are the three characteristics of Big Data?

402

What is the difference between spark and python?

300

Name types of Cluster Managers in Spark.

291

how you can reduce churn in ISR? When does broker leave the ISR?

573

Explain different execution modes available in Pig?

747

What do you understand by the term snitch in cassandra? Give some example.

What is a Backup node in Hadoop?

509

What is the difference between rdd and dataframe in spark?

331

Should we use RAID in Hadoop or not?

1011

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