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Apache Hadoop Interview Questions
Questions Answers Views Company eMail

What is the port number for NameNode

 578

What are the benefits of block transfer?

 642

How did you debug your Hadoop code ?

 997

What will you do when NameNode is down?

 667

What is the best hardware configuration to run Hadoop?

 1327

Should we use RAID in Hadoop or not?

 699

How to change Replication Factor For below cases ?

 675

What are the basic available commands in Hadoop sqoop ?

 663

On What concept the Hadoop framework works?

 880

How to write a Custom Key Class?

 633

What if rack 2 and datanode fails?

 788

How client application interacts with the NameNode?

 664

How is the option in Hadoop to skip the bad records?

 670

How the HDFS Blocks are replicated?

 638

Explain InputFormat?

 663

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Un-Answered Questions { Apache Hadoop }

What is difference between regular file system and HDFS?

695

What is the difference between HDFS and NAS ?

958

Does Hadoop requires RAID?

651

Mention what is the number of default partitioner in Hadoop?

428

If a data Node is full how it's identified?

643




What is the meaning of speculative execution in Hadoop? Why is it important?

747

Why is hadoop faster?

375

How can we look for the namenode in the browser?

399

What is a block and block scanner in HDFS?

705

Explain the benefits of block transfer?

514

How to keep HDFS cluster balanced?

799

Is it necessary to know java to learn hadoop?

370

What is hbase in hadoop?

382

What infrastructure do we need to process 100 TB data using Hadoop?

738

Explain the features of stand alone (local) mode?

358

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