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

Discuss the various running mode of Apache Spark?

283

Describe Spark SQL?

324

Explain SparkContext in Apache Spark?

310

What are the types of Transformation in Spark RDD Operations?

273

Explain first() operation in Apache Spark RDD?

355

What are the ways in which Apache Spark handles accumulated Metadata?

343

Explain the various Transformation on Apache Spark RDD like distinct(), union(), intersection(), and subtract()?

275

Is it possible to run Apache Spark without Hadoop?

266

What is Apache Spark Streaming?

313

How can you implement machine learning in Spark?

262

List some commonly used Machine Learning Algorithm Apache Spark?

266

What is the command to start and stop the Spark in an interactive shell?

300

List out the ways of creating RDD in Apache Spark?

270

What are the various advantages of DataFrame over RDD in Apache Spark?

298

What is flatmap in apache spark?

310

Un-Answered Questions { Hadoop }

What is the task of Spark Engine

314

Describe Spark SQL?

324

What is Balancer in Hadoop?

437

How can an application connect to Hive run as a server?

1111

How does pig work?

561

What is fsck?

600

Did you ever ran into a lop sided job that resulted in out of memory error

1172

Differentiate between describe and describe extended?

664

What is partitioner spark?

263

What is the difference between NAS and HDFS?

What is map in spark?

306

How can we create znodes?

Explain what is zookeeper in kafka? Can we use kafka without zookeeper?

509

Clarify what is sequence file input format?

494

What is check pointing in hadoop?

405

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