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 user of sparkContext?

329

How is the processing of streaming data achieved in Apache Spark? Explain.

300

Can you do real-time processing with Spark SQL?

335

Discuss the role of Spark driver in Spark application?

296

What are the features of RDD, that makes RDD an important abstraction of Spark?

301

What is Apache Spark? What is the reason behind the evolution of this framework?

294

What are accumulators in Apache Spark?

330

What is the reason behind Transformation being a lazy operation in Apache Spark RDD? How is it useful?

505

Explain about the different types of trformations on dstreams?

319

Describe the run-time architecture of Spark?

300

What is the FlatMap Transformation in Apache Spark RDD?

301

can you run Apache Spark On Apache Mesos?

328

Describe Partition and Partitioner in Apache Spark?

311

Describe Accumulator in detail in Apache Spark?

326

List down the languages supported by Apache Spark?

298

Un-Answered Questions { Hadoop }

What are the different types of Znodes?

1009

Explain the master class and the output class do?

687

what are the steps involved in commissioning adding

941

What is the difference between a Hadoop and Relational Database and Nosql?

1108

Bag in pig ?

608

How we can check hadoop sqoop installed or not in a system?

What is Nagios?

226

How the read operation is performed on Cassandra node ?

104

I want to see the present working directory in UNIX from hive. Is it possible to run this command from hive?

707

Differentiate between Pig Latin and Pig Engine?

884

In how many ways can we use Spark over Hadoop?

347

What is spark vs scala?

288

What are the scalar data types in Pig?

631

What are the limitations of Apache Spark?

295

What are active and passive "NameNodes"?

1506

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