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 check pointing in hadoop?

398

What does secondary name-node means?

387

What type of data hadoop can handle ?

381

What does the high availability of a name-node means?

398

What does block mean?

402

What do you think about the speculative execution?

399

What did mean by data-node?

392

How to use combiner in hadoop ?

409

List few benefits of spark over map reduce?

273

Can you define rdd?

287

Do you know the comparative differences between apache spark and hadoop?

255

What do you understand about yarn?

273

Name few companies that are the uses of apache spark?

279

Name the operations supported by rdd?

304

Name the languages which are supported by apache spark and which one is most popular?

260

Un-Answered Questions { Hadoop }

Can you explain worker node?

387

List the configuration parameters that have to be specified when running a MapReduce job.

568

Clarify what is sequence file input format?

487

What is a partition in spark?

346

Can Ambari manage multiple clusters?

What are the independent extensions that contributed to the ambari codebase?

TRIM function in Hive with example?

676

What are the benefits of Spark over MapReduce?

577

What ensures load balancing of the server in Kafka?

621

Define "Transformations" in Spark

309

Name the operating system(s) which are supported for production hadoop deployment?

398

What is a speculative execution in Apache Hadoop MapReduce?

739

What is the use of cassandra cql collection?

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

633

Is spark good for machine learning?

288

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