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 the design architecture of Cassandra?

Who uses Cassandra?

JMX stands for?

110

What are the different features of Cassandra?

What happens to existing data in my cluster when I add new nodes?

232

What is the primary objective of NoSQL databases?

What is Cassandra Query Language?

What are the different components of Cassandra?

109

What are “Seed Nodes” in Cassandra?

300

What do you understand by High availability?

What is gossip protocol in Cassandra?

How Cassandra provide High availability feature?

What is NoSQL database?

104

When to use Cassandra?

128

Is there an update statement?

162

Un-Answered Questions { Hadoop }

Does spark need yarn?

259

Why do we use Hadoop?

961

Define "Action" in Spark

315

What is broadcast variable?

383

What is the difference between apache mahout and spark mllib ?

Which one is better hadoop or spark?

324

What is the need for Spark DAG?

319

Why does the picture of Spark come into existence?

324

Explain the features of pseudo mode?

754

What is the difference between Cassandra and Hadoop ?

What is the difference between Spark Transform in DStream and map ?

305

What are the various data types in presto?

Describe JMX?

How can we launch Spark application on YARN?

444

How hadoop mapreduce works?

691

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