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 do you understand by Executor Memory in a Spark application?

473

Is Apache Spark a good fit for Reinforcement learning?

292

What is Catalyst framework?

292

What do you understand by Pair RDD?

385

How can you launch Spark jobs inside Hadoop MapReduce?

314

How can you compare Hadoop and Spark in terms of ease of use?

289

Which one will you choose for a project –Hadoop MapReduce or Apache Spark?

315

What do you understand by Lazy Evaluation?

376

How can you remove the elements with a key present in any other RDD?

297

How Spark uses Hadoop?

298

What is a DStream?

329

What are the various data sources available in SparkSQL?

333

Explain about the core components of a distributed Spark application?

291

What are the benefits of using Spark with Apache Mesos?

290

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

285

Un-Answered Questions { Hadoop }

Explain Any 3 Features of HBase?

166

How many types of nosql databases?

What is a skewed join?

613

State the usage of 'filters', 'group' , 'orderBy', 'distinct' keywords in pig scripts?

661

What are Pig Execution modes?

615

Describe the different consistency levels for read operation in cassandra?

Explain the architecture of Hadoop Pig?

761

What do you understand by unit and ()in scala?

494

What is a Combiner?

741

What are the the issues associated with the map and reduce slots based mechanism in mapReduce?

645

How many filters are available in HBase?

441

Explain the Parquet File format in Apache Spark. When is it the best to choose this?

361

What is node in Cassandra?

Can you tell us how many daemon processes run on a hadoop system?

593

Which is better scala or python for spark?

291

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