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

On which all platform can Apache Spark run?

282

What do we mean by Paraquet?

461

Explain various cluster manager in Apache Spark?

405

What is the difference between DAG and Lineage?

1647

What are the file formats supported by spark?

315

List some use cases where Spark outperforms Hadoop in processing.

307

Explain the use of File system API in Apache Spark

308

How can you minimize data transfers when working with Spark?

359

Explain about the common workflow of a Spark program?

349

What do you understand by receivers in Spark Streaming ?

338

By Default, how many partitions are created in RDD in Apache Spark?

325

What are broadcast variables in Apache Spark? Why do we need them?

333

Is it necessary to start Hadoop to run any Apache Spark Application ?

298

What is write ahead log(journaling)?

321

Does Apache Spark provide checkpoints?

306

Un-Answered Questions { Hadoop }

How will you connect Apache Spark with Apache Mesos?

284

What is the role of Driver program in Spark Application?

290

How does apache spark engine work?

332

Is there any API available for implementing graphs in Spark?

322

Do we require two servers for the namenode and the datanodes?

558

Can you give a detailed overview about the Big Data being generated by Facebook?

481

Why are Replications critical in Kafka?

612

Which database is used in hadoop?

524

What are file permissions in HDFS and how HDFS check permissions for files or directory?

What do you mean by Stream Processing in Kafka?

549

Is it possible to add 100 more nodes when we already have 100 nodes in Hive?

1325

What are the different Primitive Data Types available in Hive?

733

Why do the nodes are removed and added frequently in a hadoop cluster?

505

Why is Apache Spark faster than Apache Hadoop?

882

What are the common mistakes developers make when running Spark applications?

309

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