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?

539

What is the process for starting a Kafka server?

594

What can you do with Kafka?

545

What roles do Replicas and the ISR play?

546

What is the role of the ZooKeeper in Kafka?

527

What are the types of traditional method of message transfer?

593

Explain the role of the Kafka Producer API?

520

In the Producer, when does QueueFullException occur?

552

Why are Replications critical in Kafka?

571

What does ISR stand in Kafka environment?

659

What are consumers or users?

615

What is the main difference between Kafka and Flume?

690

Un-Answered Questions { Hadoop }

What is the use of ZooKeeper?

228

what is the default replication factor in HDFS?

1017

Where the mapper's intermediate data will be stored?

638

What are Flume core components?

Can you define udf?

424

Which operating system(s) are supported for production hadoop deployment?

428

Explain the different types of repairs.

How will you explain COGROUP in Pig?

630

When and how to create hadoop archive?

444

How can I restart namenode?

722

What is structured and unstructured data?

446

Explain about the partitioning, shuffle and sort phase

671

How does cassandra perform write operations?

Please provide an explanation on DStream in Spark.

282

Map reduce jobs take too long. What can be done to improve the performance of the cluster?

697

For More Un-Answered { Hadoop } Questions Click Here