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Hadoop Interview Questions
Questions Answers Views Company eMail

Mention how many inputsplits is made by a hadoop framework?

 438

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

 285

Explain is it possible to search for files using wildcards?

 304

Explain what is hadoop?

 325

Explain what is sequencefileinputformat?

 332

Mention how hadoop is different from other data processing tools?

 310

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

 321

Mention what is rack awareness?

 292

Mention what is the difference between an rdbms and hadoop?

 305

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

 309

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

 488

Explain what is storage and compute nodes?

 353

Explain how jobtracker schedules a task?

 326

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

 324

What happens in text format?

 339

Un-Answered Questions { Hadoop }

Why we need compression and what are the different compression format supported?

236

What is the difference between spark and python?

227

What does hdfs mean?

33

What is unstructured data?

485

What are the Data extraction tools in Hadoop?

75

To use Spark on an existing Hadoop Cluster, do we need to install Spark on all nodes of Hadoop?

301

Name some features of Apache Cassandra?

79

Who invented hadoop?

505

Why is apache spark so fast?

235

How Mapper is instantiated in a running job?

833

How to Rename a table in Hive

565

Where is the Mapper Output intermediate kay-value data stored ?

1166

What is interactive mode in apache pig?

393

How to enable buckets in Hive?

689

While loading data into a hive table using the load data clause, how do you specify it is a hdfs file and not a local file ?

549

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