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

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

What is Rack awareness?

999

How will format the HDFS ?

1063

what are the steps involved in commissioning adding

909

How to use Apache Zookeeper command line interface?

1137

Can NameNode and DataNode be a commodity hardware?

1679

What are the steps to submit a Hadoop job?

906

What is the heartbeat used for?

1045

How would you tackle counting words in several text documents?

1022

What are the Basics of Hadoop?

930

Explain the shuffle?

915

How blocks are distributed among all data nodes for a particular chunk of data?

1090

How can I install Cloudera VM in my system?

958

How we can take Hadoop out of Safe Mode?

IBM,

855

What is Writable & WritableComparable interface?

926

What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?

1075

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Un-Answered Questions { Apache Hadoop }

when hadoop enter in safe mode?

744

What is the purpose of DataNode block scanner?

964

Knox and Hadoop Development Tools?

927

Explain the difference between gen1 and gen2 hadoop with regards to the namenode?

726

What is the process to change the files at arbitrary locations in HDFS?

1418

Who is a 'user' in HDFS?

890

How can I restart namenode?

720

What is structured data?

649

What is 'Key value pair' in HDFS?

960

What is inputformat in hadoop?

744

What is the best hardware configuration to run Hadoop?

1626

How can we change the split size if our commodity hardware has less storage space?

663

What problems have you faced when you are working on Hadoop code?

968

Does this lead to security issues?

740

How does an hadoop application look like or their basic components?

728

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