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

How the SSTable is different from other relational tables?

What is a keyspace in Cassandra?

107

What is the syntax to create keyspace in Cassandra?

126

What is the role of CQLSH?

Define data centre?

118

Define composite key?

Can we change Replication Factor on a live cluster?

What is bloom filter?

Talk about the concept of tunable consistency in Cassandra.

136

Establish the difference between a node, cluster & data centres in Cassandra.

150

Explain Tombstone in Cassandra?

List the steps in which Cassandra writes changed data into commitlog?

243

Does Cassandra support ACID transactions?

107

What is the replica placement Strategy in Cassandra ?

What are the main features of SPM in Cassandra?

Un-Answered Questions { Hadoop }

What do you understand about yarn?

309

What is HDFS High Availability?

1018

What is difference between spark and hadoop?

272

Mention how many inputsplits is made by a hadoop framework?

614

Describe Accumulator in detail in Apache Spark?

330

In what ways sparksession different from sparkcontext?

360

Define Partitions?

331

What are producer-consumer queues?

How does executor work in spark?

331

Explain how to write the output into a file using storm?

594

Explain what do you understand by cassandra- cql collections?

What are the different types of UDF's in Java supported by Apache Pig?

1089

How can you store the data in spark?

332

What is hadoop technology?

317

What is Spark SQL?

325

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