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Apache Hadoop Interview Questions
Questions Answers Views Company eMail

What is Rack awareness?

 677

How will format the HDFS ?

 628

what are the steps involved in commissioning adding

 621

How to use Apache Zookeeper command line interface?

 702

Can NameNode and DataNode be a commodity hardware?

 1390

What are the steps to submit a Hadoop job?

 602

What is the heartbeat used for?

 665

How would you tackle counting words in several text documents?

 742

What are the Basics of Hadoop?

 665

Explain the shuffle?

 602

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

 744

How can I install Cloudera VM in my system?

 656

How we can take Hadoop out of Safe Mode?

IBM,

594

What is Writable & WritableComparable interface?

 661

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

 701

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Un-Answered Questions { Apache Hadoop }

What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?

784

What do slaves consist of?

393

Is a job split into maps?

717

What do you mean by taskinstance?

379

What is the default block size in hdfs?

721




Explain what is the purpose of RecordReader in Hadoop?

439

What are the important differences between apache and hadoop?

394

Explain the use of tasktracker in the hadoop cluster?

370

What are the two main parts of the hadoop framework?

352

How to resolve small file problem in hdfs?

647

Explain the features of stand alone (local) mode?

358

What are the four characteristics of Big Data?

439

What are the steps to submit a Hadoop job?

602

What if a namenode has no data?

409

what are Task Tracker and Job Tracker?

694

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