Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

Which Sorting algorithm is used in Hadoop MapReduce?

645

What is the need of MapReduce?

693

How to configure the number of the Combiner in MapReduce?

673

How to change a number of mappers running on a slave in MapReduce?

844

Is it mandatory to set input and output type/format in MapReduce?

795

How to set the number of mappers for a MapReduce job?

759

Define Writable data types in Hadoop MapReduce?

697

What is the sequence of execution of map, reduce, recordreader, split, combiner, partitioner?

759

What is shuffling and sorting in Hadoop MapReduce?

686

Define the Use of MapReduce?

726

Whether the output of mapper or output of partitioner written on local disk?

723

How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?

739

Explain the process of spilling in MapReduce?

655

List Hadoop’s three configuration files?

460

What is Distributed Cache in Hadoop?

510

Un-Answered Questions { Big Data }

Do I need to learn scala for spark?

328

What is Implicit Type conversion in Hive?

849

What is data pipeline in spark?

307

What is spark written?

348

How does master slave architecture in the hadoop?

885

What are the types of cluster managers in spark?

295

State one best feature of Kafka?

575

Define Writable data types in Hadoop MapReduce?

697

Give examples of the SerDe classes which hive uses to Serialize and Deserialize data?

749

What are the Basics of Hadoop?

973

What is the Cassandra Coefficient ?

what are the main configuration parameters that user need to specify to run Mapreduce Job ?

657

How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?

664

List of some best tools that can be useful for data-analysis?

476

What is HDFS ? How it is different from traditional file systems?

958

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