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Apache Hadoop Interview Questions
Questions Answers Views Company eMail

What is Rack awareness?

561

How will format the HDFS ?

512

what are the steps involved in commissioning adding

526

How to use Apache Zookeeper command line interface?

594

Can NameNode and DataNode be a commodity hardware?

1197

What are the steps to submit a Hadoop job?

500

What is the heartbeat used for?

548

How would you tackle counting words in several text documents?

641

What are the Basics of Hadoop?

553

Explain the shuffle?

505

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

647

How can I install Cloudera VM in my system?

559

How we can take Hadoop out of Safe Mode?

IBM,

500

What is Writable & WritableComparable interface?

568

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

585


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Un-Answered Questions { Apache Hadoop }

What is Row Key?

543


Does hadoop always require digital data to process?

664


Why are the number of splits equal to the number of maps?

540


Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?

595


What is the purpose of RawComparator interface?

690






Explain the wordcount implementation via hadoop framework ?

290


What is compute and Storage nodes?

600


What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?

326


What are the two main parts of the hadoop framework?

260


when hadoop enter in safe mode?

323


What is commodity hardware?

290


Can Hadoop be compared to NOSQL database like Cassandra?

542


What is Partioner in hadoop? Where does it run

533


What do masters consist of?

304


How client application interacts with the NameNode?

558