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  1. Categories >> Software >> Big Data >> Hadoop >> Hadoop General
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Hadoop General Interview Questions
Questions Answers Views Company eMail

Give me the examples of Columnar database ?

 586

What are 'slaves' and 'masters' in Hadoop?

 419

What is Fault Tolerance?

 533

What is the basic difference between traditional RDBMS and Hadoop?

 443

What are the common types of NOSQL data bases ?

 445

Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?

 430

How does speculative execution work in Hadoop?

 435

What is Federation?

 415

What is the difference between TextInputFormat and KeyValueInputFormat class?

 501

What is High Availability feature in Hadoop2?

 440

What is the command to change the replication factor ?

 501

What is JobTracker?

 435

How many datanodes can run on a single Hadoop cluster?

 452

What are some typical functions of Job Tracker?

 428

What is TaskTracker?

 485

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Un-Answered Questions { Hadoop General }

How ordering in hdfs is finished?

424

What is the key difference between NameNode and DataNode in Hadoop?

492

How namenode handles data node failures?

524

Doesn’t google have its very own version of dfs?

481

What is JobTracker?

435

After increasing the replication level, I still see that data is under replicated. What could be wrong?

460

If no custom partitioner is defined in Hadoop then how is data partitioned before it is sent to the reducer?

451

Name the most common Input Formats defined in Hadoop? Which one is default?

464

What is Balancer in Hadoop?

472

Compare Hadoop and RDBMS?

410

How job tracker schedules an assignment?

413

What is TaskTracker?

485

List out the different stream grouping in apache storm?

383

Why does one remove or add nodes in a Hadoop cluster frequently?

695

Which operating system(s) are supported for production hadoop deployment?

428

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