Apache Hadoop Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

How to enable trash/recycle bin in hadoop?

738

What is small file problem in hadoop?

783

What are the default configuration files that are used in hadoop?

691

What exactly is hadoop?

691

Can we do online transactions(oltp) using hadoop?

669

Did you ever built a production process in hadoop ? If yes then what was the process when your hadoop job fails due to any reason?

690

What is output format in hadoop?

683

How to enable/configure the compression of map output data in hadoop?

766

What hadoop does in safe mode?

649

What is inputformat in hadoop?

744

Explain how input and output data format of the hadoop framework?

714

when hadoop enter in safe mode?

744

How to enable recycle bin or trash in hadoop?

706

Whats is distributed cache in hadoop?

678

what should be the ideal replication factor in hadoop?

653

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Un-Answered Questions { Apache Hadoop }

Name the various types of lists supported by bootstrap.

678

What is Hadoop streaming?

1046

What is the difference between hadoop and other data processing tools?

688

How can you connect an application

1028

What are different hdfs dfs shell commands to perform copy operation?

1060

Explain what is sqoop in Hadoop ?

726

What is a block and block scanner in HDFS?

1030

What is the purpose of DataNode block scanner?

966

What is 'Key value pair' in HDFS?

960

How we can change Replication factor when Data is on the fly?

1343

what are the steps involved in decommissioning removing

1015

Define a datanode?

646

What are the default configuration files that are used in hadoop?

691

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

1018

What are the main components of a Hadoop Application?

1039

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