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

Hadoop General Interview Questions

Questions Answers Views Company eMail

Explain the key benefits of using storm for real time processing?

462

What is the logistic regression?

475

Define data cleansing?

439

What are the port numbers of namenode?

467

How can we create a hadoop cluster from scratch?

460

What are the port numbers of task tracker?

488

How can you native libraries be included in yarn jobs?

472

Name the files which are used by the startup and shutdown commands?

1 992

Define a record reader?

448

What is the job tracker role in hadoop?

475

Explain how do you overwrite replication factor?

460

Explain how can we check whether namenode is working or not?

615

Define a udf?

465

Define a sequence file in hadoop?

578

Name the operating system(s) which are supported for production hadoop deployment?

473

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Un-Answered Questions { Hadoop General }

What is tasktracker in hadoop?

467

What is a rack?

456

Are job tracker and task trackers present in separate machines?

502

What is partitioning?

500

What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?

487

What are the differences between hadoop 1 and hadoop 2?

468

Where is hadoop-env.sh file present?

528

Ideally what should be the replication factor in hadoop?

478

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

491

What are the core methods of a Reducer?

552

What kind of hardware is best for hadoop?

463

What do you know about yarn?

451

What are the features of Pseudo mode?

544

What are the most common OutputFormat in Hadoop?

577

Ideally what should be the block size in hadoop?

491

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