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?

483

Is Apache Spark a good fit for Reinforcement learning?

310

What is Catalyst framework?

309

What do you understand by Pair RDD?

397

How can you launch Spark jobs inside Hadoop MapReduce?

332

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

307

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

327

What do you understand by Lazy Evaluation?

393

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

311

How Spark uses Hadoop?

314

What is a DStream?

333

What are the various data sources available in SparkSQL?

351

Explain about the core components of a distributed Spark application?

312

What are the benefits of using Spark with Apache Mesos?

301

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

309

Un-Answered Questions { Hadoop }

What are 4 v's of big data?

306

How much faster is Apache spark than Hadoop?

307

What are the different Complex Data Types available in Hive?

941

What is shuffling in mapreduce?

651

Define memtable?

What are Paired RDD?

331

Differentiate between the various types of primary keys in cassandra.

How can we create children / sub-znode?

How will format the HDFS ?

1120

What do you know about the speculative execution?

496

Elaborate kafka architecture?

557

What is the difference between logical and physical plans?

588

What is the default file format to import data using Apache Sqoop?

What is skew data?

310

is it posible to join multiple fields in pig scripts?

556

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