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 the ZooKeeper ensemble?

What are the possible Job roles?

What are the challenges Of Distributed Applications?

Explain the types Of Znodes?

Explain the CLI In Zookeeper?

What is ZooKeeper quorum?

What is the model of a ZooKeeper cluster?

What must we know to work on Zookeeper well?

What do you mean by ZNode?

Explain about the different types of transformations on DStreams?

387

What are the various levels of persistence in Apache Spark?

320

How can you trigger automatic clean-ups in Spark to handle accumulated metadata?

444

What are the disadvantages of using Apache Spark over Hadoop MapReduce?

458

Is it necessary to install spark on all the nodes of a YARN cluster while running Apache Spark on YARN ?

344

Explain about the major libraries that constitute the Spark Ecosystem?

417

Un-Answered Questions { Hadoop }

What do you understand about yarn?

285

What is a metastore in hive?

699

List of the some best tools that can be useful for data-analysis?

437

What is a ledger in bookkeeper?

Why do fires spark?

299

Why slaves limited to 4000 in hadoop version 1?

487

Explain the Differences between Hive and Spark SQL?

715

What is accumulator in spark?

489

How analysis of Big Data is useful for organizations?

460

What is lambda in spark?

309

Discuss the precautions that are needed to take care while adding a column?

What is the difference between apache mahout and apache spark’s mllib?

Are spark dataframes distributed?

314

What does ‘jps’ command do?

695

What is the difference between a MapReduce InputSplit and HDFS block?

752

For More Un-Answered { Hadoop } Questions Click Here