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Hadoop General Interview Questions
Questions Answers Views Company eMail

How to create hadoop archive?

383

When should be hadoop archive create?

396

What mode(s) can hadoop code be run in?

421

How often do you need to reformat the namenode?

479

What is the role of the namenode?

399

What happen on the namenode when a client tries to read a data file?

432

What is replication factor?

404

If the hadoop administrator needs to make a change, which configuration file does he need to change?

405

What is distributed copy (distcp)?

437

What is the role of the secondary namenode?

412

Are there any special requirements for namenode?

397

is there a standard procedure to deploy hadoop?

392

What happen if a datanode loses network connection for a few minutes?

556

What is the procedure for namenode recovery?

400

How would an hadoop administrator deploy various components of hadoop in production?

391


Post New Hadoop General Questions

Un-Answered Questions { Hadoop General }

Explain how does hadoop classpath plays a vital role in stopping or starting in hadoop daemons?

579


Can you explain indexing?

385


What are some typical functions of Job Tracker?

406


What is a combiner in hadoop?

482


What is Fault Tolerance?

498


What is the default replication factor in Hadoop and how will you change it?

544


Where is hadoop-env.sh file present?

448


Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?

443


Is it possible to rename the output file, and if so, how?

431


What are the main components of hadoop?

398


Which are the three modes in which hadoop can be run?

420


What is the default replication factor and how will you change it?

489


What are the differences between hadoop 1 and hadoop 2?

397


What mode(s) can hadoop code be run in?

421


What are the common types of NOSQL data bases ?

420