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

Explain Spark Driver?

353

Is there any API available for implementing graphs in Spark?

322

Please enumerate the various components of the Spark Ecosystem.

412

What is the role of Spark Driver in spark applications?

336

Name three companies which is used Spark Streaming services

340

Explain the default level of parallelism in Apache Spark

328

Explain the process to trigger automatic clean-up in Spark to manage accumulated metadata.

325

Can You Use Apache Spark To Analyze and Access Data Stored In Cassandra Databases?

314

What is Spark SQL?

325

Can you explain how to minimize data transfers while working with Spark?

548

What are the ways to launch Apache Spark over YARN?

298

is it necessary to install Spark on all nodes while running Spark application on Yarn?

331

What is a worker node in Apache Spark?

310

What is worker node in Apache Spark cluster?

314

What is action, how it process data in apache spark

353

Un-Answered Questions { Hadoop }

What is the problem with small files in Hadoop?

567

Is fs.mapr.working.dir a single directory?

718

What is OutputCommitter?

864

Can hadoop replace relational database?

474

Can you explain spark streaming?

317

How will format the HDFS ?

1120

Clarify SSTable?

347

Name various types of Cluster Managers in Spark.

352

Explain what happens in textinformat ?

787

What combiners is and when you should use a combiner in a MapReduce Job?

674

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

476

Can you join multiple fields in Apache

575

What is executor spark?

315

What is the difference between local and remote metastore?

1145

Can you explain apache spark?

335

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