1. Categories >> Software >> Big Data >> Hadoop
  2. Suggest New Category



Hadoop Interview Questions
Questions Answers Views Company eMail

What are the functions of NameNode?

 1 1415

How to configure hadoop to reuse JVM for mappers?

 793

mapper or reducer?

 634

How to resolve IOException: Cannot create directory

 679

Does Pig support multi-line commands?

 580

How to change replication factor of files already stored in HDFS?

 713

Which one is default InputFormat in Hadoop ?

 1 1673

shouldn't DFS be able to handle large volumes of data already?

 778

What is Apache Pig?

 584

what is a datanode?

 643

How does NameNode tackle DataNode failures?

 881

What is InputSplit and RecordReader?

 649

What is the purpose of dfsadmin tool?

 919

How can you connect an application

 724

What are combiners? When should I use a combiner in my MapReduce Job?

 662

Un-Answered Questions { Hadoop }

What is the Use of SSH in Hadoop ?

658

what are the main components of cassandra data model?

61

Why do we use persist () on links rdd?

207

why should we use 'group' keyword in pig scripts?

330

In ambari what are the different life cycle commands?

33




How to handle bad records during parsing?

256

What are the advantages of using map side join in mapreduce?

356

Why do we perform partitioning in Hive?

460

What is the difference between traditional RDBMS and Hadoop?

805

What is the difference between a node, a cluster, and data centre?

118

Define Actions.

211

What is meant by in-memory processing in Spark?

217

Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?

287

What is metadata storage service in bookkeeper?

1

What is inputformat in hadoop?

426

For More Un-Answered { Hadoop } Questions Click Here