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 do you mean by Schema Declaration?

What is Apache Kafka?

547

Why is Kafka technology significant to use?

511

Explain the role of the offset?

535

What is the process for starting a Kafka server?

590

What can you do with Kafka?

530

What roles do Replicas and the ISR play?

544

What is the role of the ZooKeeper in Kafka?

525

What are the types of traditional method of message transfer?

591

Explain the role of the Kafka Producer API?

518

In the Producer, when does QueueFullException occur?

552

Why are Replications critical in Kafka?

571

What does ISR stand in Kafka environment?

655

What are consumers or users?

613

What is the main difference between Kafka and Flume?

688

Un-Answered Questions { Hadoop }

How to set the number of reducers?

1360

What is spark database?

336

What are the different types of data model?

What is sink processors?

Can you explain data versioning?

172

What is HDFS Federation?

979

What port does spark use?

315

What is the default extension of the files produced from a sqoop import using the –compress parameter?

List the network requirements for using Hadoop ?

626

What are the differences between PIG and SQL?

643

How blocks are distributed among all data nodes for a particular chunk of data?

1090

What is decorating filters?

301

Discuss the various running mode of Apache Spark?

291

How data or file is written into HDFS?

What are the primitive data types in Pig?

538

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