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

Where do you specify the Mapper Implementation?

948

What is the meaning of speculative execution in Hadoop? Why is it important?

1019

What is the InputFormat ?

969

Command to format the NameNode?

898

Who is a 'user' in HDFS?

855

What is the meaning of the term "non-DFS used" in Hadoop web-console?

1250

did you maintain the hadoop cluster in-house or used hadoop in the cloud?

978

What is DistributedCache and its purpose?

875

What is HDFS ? How it is different from traditional file systems?

893

What is HDFS Block size? How is it different from traditional file system block size?

1 1389

How you can contact your client everyday ?

929

What is Input Split in hadoop?

937

What is 'Key value pair' in HDFS?

916

How to keep HDFS cluster balanced?

1064

What is the port number for NameNode

803

Un-Answered Questions { Hadoop }

Differentiate between the terms: node, a cluster, and data center in cassandra?

What is the difference between kafka and flume?

How to create a user in Hadoop?

447

Define streaming?

619

What are the features of apache cassandra?

Is nosql follow relational db model?

425

What are the different tools used for the ambari monitoring purpose?

What is ColumnFamily?

Which one will you choose for a project –Hadoop MapReduce or Apache Spark?

293

Knox and Hadoop Development Tools?

884

What happen if the number of the reducer is 0 in MapReduce?

612

Can you explain spark core?

255

Name some internal daemons used in spark?

351

What is lineage graph?

450

What are Guarantees provided by Kafka?

500

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