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?

688

What is small file problem in hadoop?

717

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

644

What exactly is hadoop?

646

Can we do online transactions(oltp) using hadoop?

622

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?

647

What is output format in hadoop?

650

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

709

What hadoop does in safe mode?

613

What is inputformat in hadoop?

700

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

660

when hadoop enter in safe mode?

690

How to enable recycle bin or trash in hadoop?

652

Whats is distributed cache in hadoop?

634

what should be the ideal replication factor in hadoop?

615

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Un-Answered Questions { Apache Hadoop }

What is the difference between a Hadoop and Relational Database and Nosql?

1028

What is Rack awareness?

946

How to Administering Hadoop?

868

Should we use RAID in Hadoop or not?

1003

Is it possible to provide multiple inputs to hadoop? If yes, explain.

615

Is a job split into maps?

991

What is the Use of SSH in Hadoop ?

922

What is the main purpose of HDFS fsck command?

1721

On what basis Namenode will decide which datanode to write on?

1213

What is Rack Awareness in Apache Hadoop?

749

What is crontab? Explain with suitable example?

994

What is the purpose of RawComparator interface?

1076

Why is hadoop faster?

597

How can I restart namenode?

666

What is the function of NodeManager?

868

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