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 are the roles of the file system in any framework?

328

Name some companies that are already using Spark Streaming?

282

What is Spark Streaming?

313

What does it mean by Columnar Storage Format?

315

What is Spark Dataset?

339

Why is there a need for broadcast variables when working with Apache Spark?

323

What is the abstraction of Spark Streaming?

276

What are shared variables?

349

Does Spark provide the storage layer too?

295

What are the advantages of datasets in spark?

296

How to save RDD?

326

What are the common faults of the developer while using Apache Spark?

305

When creating an RDD, what goes on internally?

305

What is Spark MLlib?

435

What is meant by Transformation? Give some examples.

323

Un-Answered Questions { Hadoop }

What are the hadoop's three configuration files?

741

What does a 'MapReduce Partitioner' do?

735

What is spark executor cores?

305

Explain the use of .mecia class?

821

How should 'store' keyword is useful in pig scripts?

679

What is check pointing in hadoop?

476

What are the different data formats supported by apache tajo?

What are the different modes in which PIG can run and explain those?

535

What is the task of Spark Engine

341

Does Pig support multi-line commands?

937

What is Spark Streaming?

313

How is rdd fault?

298

Does spark store data?

302

Explain Machine Learning library in Spark?

303

What services run after running hbase job?

172

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