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

What is data cleansing?

459

What is the number of default partitioner in hadoop?

442

Can you explain hadoop streaming?

424

List out some common problems faced by data analyst?

461

What is job tracker role in hadoop?

486

What do you understand by a closure in scala?

493

Can you explain textinformat?

503

List some use cases where classification machine learning algorithms can be used.

473

How many daemon processes run on a hadoop cluster?

467

Which scala library is used for functional programming?

471

Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?

483

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

436

Can you explain speculative execution?

426

How do you overwrite replication factor?

460

Can you explain logistic regression?

419

Un-Answered Questions { Hadoop }

What is atom in pig?

551

Explain Features of Pig?

678

What is spark tool?

265

What is the difference between hadoop and other data processing tools?

697

What is Disk Balancer in Apache Hadoop?

904

What exactly kafka does?

481

Can you mention some features of spark?

320

How to keep files in HDFS?

How do you process big data with spark?

283

What is "GraphX" in Spark?

302

If the source data gets updated every now and then, how will you synchronize the data in hdfs that is imported by sqoop?

149

Elaborate kafka architecture?

527

hbase support syntax structure like sql. Yes or no?

200

Where can I get sample data to try?

How many JVMs run on a slave node?

1053

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