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Hadoop Interview Questions
Questions Answers Views Company eMail

Mention how many inputsplits is made by a hadoop framework?

 299

Explain what is jobtracker in hadoop? What are the actions followed by hadoop?

 225

Explain is it possible to search for files using wildcards?

 229

Explain what is hadoop?

 261

Explain what is sequencefileinputformat?

 243

Mention how hadoop is different from other data processing tools?

 236

Mention what are the most common input formats defined in hadoop?

 251

Mention what is rack awareness?

 225

Mention what is the difference between an rdbms and hadoop?

 239

Mention what are the three modes in which hadoop can be run?

 236

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

 411

Explain what is storage and compute nodes?

 268

Explain how jobtracker schedules a task?

 258

Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?

 258

What happens in text format?

 242

Un-Answered Questions { Hadoop }

Elaborate on cassandra - cql?

50

What are the common types of NOSQL data bases ?

237

What do you understand by Consistency in Cassandra?

51

What is different table structure available in the hive?

438

Explain ALTER Table statement in Hive?

445




Which object can be used to get the progress of a particular job

241

What is used to store data generally?

37

What is the difference between map and flatmap?

213

When to choose "Internal Table" in Hive?

434

Is apache spark in demand?

183

Explain about the data model operations in HBase?

107

What is the Hadoop MapReduce API contract for a key and value Class?

1017

What is throughput? How does HDFS get a good throughput?

34

How does inputsplit in mapreduce determines the record boundaries correctly?

410

State syntax of the command to drop an index?

5

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