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

How kafka communicate with clients and servers?

520

What is log compaction?

530

Kafka has written in which languages?

537

What exactly kafka does?

473

What are consumers in kafka?

541

What does producer api in kafka?

489

What does consumer api in kafka?

507

How can you configur the log cleaner?

566

What are the core api’s of kafka?

501

How can you use streams api?

538

How can you create topic in kafka?

545

How can you send some messages in kafka?

502

What are broker configs?

531

What are quotas?

504

What are producers in kafka?

521

Un-Answered Questions { Hadoop }

State about ZooKeeper WebUI?

What all tasks you can perform for managing services using Ambari service tab?

How do you stop a running job gracefully?

605

What is Rack Awareness? What is its need in Hadoop?

532

Is there a date data type in Hive?

743

What is the benifit of Distributed cache, why can we just have the file in HDFS and have the application read it?

Mention some instances where zookeeper is using?

Is hadoop obsolete?

633

What is a namenode? How many instances of namenode run on a hadoop cluster?

643

What is fluming?

161

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 can we remove a znode?

How is mapreduce related to cloud computing?

659

How to enable buckets in Hive?

952

What is executor cores in spark?

295

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