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 relationship between Job and Task in Hadoop?

625

What combiners is and when you should use a combiner in a MapReduce Job?

589

How to set mappers and reducers for Hadoop jobs?

578

What are the data components used by Hadoop?

709

What is the best way to copy files between HDFS clusters?

635

Is it possible to search for files using wildcards?

609

In Hadoop what is InputSplit?

598

What is partitioning in MapReduce?

679

What is the definition of Hive?

694

What is the current version of Hive?

733

Explain about ACID transactions in Hive?

698

Is it possible to change the default location of Managed Tables in Hive, if so how?

687

Is it possible to add 100 more nodes when we already have 100 nodes in Hive?

1212

What is the default database provided by Apache Hive for metastore?

612

What is Buckets in Hive?

701

Un-Answered Questions { Hadoop }

What is kafka?

527

What are the functionalities of jobtracker?

641

What is column store db? Explain with an example.

Explain the difference between nas and hdfs?

Name the scalar data type and complex data types in Pig?

644

Explain apache spark streaming? How is the processing of streaming data achieved in apache spark?

297

how Cassandra writes changed data into commitlog?

In MapReduce, ideally how many mappers should be configured on a slave?

624

How would you tackle counting words in several text documents?

987

What is the best hardware configuration to run Hadoop?

1588

What is REST?

241

What is the best practice to deploy the secondary name node?

426

Name the operations supported by rdd?

310

Should the region server be located on all DataNodes?

436

Explain how Hadoop cluster hardware planning and provisioning is done?

507

For More Un-Answered { Hadoop } Questions Click Here