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

Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)

Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)

Hadoop Interview Questions

Questions Answers Views Company eMail

Mention how many inputsplits is made by a hadoop framework?

577

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

407

Explain is it possible to search for files using wildcards?

478

Explain what is hadoop?

434

Explain what is sequencefileinputformat?

455

Mention how hadoop is different from other data processing tools?

408

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

442

Mention what is rack awareness?

381

Mention what is the difference between an rdbms and hadoop?

424

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

419

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

614

Explain what is storage and compute nodes?

512

Explain how jobtracker schedules a task?

465

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

439

What happens in text format?

436

Un-Answered Questions { Hadoop }

Name the scalar data type and complex data types in Pig?

674

Which command is used to run hbase shell?

174

What do you mean by tunable consistency?

explaine wal in hbase?

173

How will you perform the inter cluster data copying work in hdfs?

What are the various advantages of DataFrame over RDD in Apache Spark?

307

What is the Job interface in MapReduce framework?

905

Can you define what is Event Serializer in Flume?

What is node?

Does Apache Spark provide check pointing?

402

Can I run an ensemble cluster behind a load balancer?

What is DataFrames?

367

What kind of data warehouse application is suitable for Hive? What are the types of tables in Hive?

724

Can you give some examples of Big Data?

470

What are the main components of MapReduce Job?

679

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