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?

647

What is the need of MapReduce?

698

How to configure the number of the Combiner in MapReduce?

674

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

846

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

797

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

759

Define Writable data types in Hadoop MapReduce?

699

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

761

What is shuffling and sorting in Hadoop MapReduce?

689

Define the Use of MapReduce?

729

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

726

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

740

Explain the process of spilling in MapReduce?

658

List Hadoop’s three configuration files?

464

What is Distributed Cache in Hadoop?

514

Un-Answered Questions { Big Data }

Is it possible to split 100 lines of input as a single split in MapReduce?

1021

What is the difference between SQL and NoSQL?

1145

What is master node in spark?

322

How kafka communicate with clients and servers?

563

Does Hive support record level Insert, delete or update?

742

What are the different catalog tables in hbase?

180

Can you tell us more about ssh?

767

How do I get apache spark on windows 10?

311

when do reducers play their role in a mapreduce task?

663

What is speculative execution in Hadoop?

1101

Is spark difficult to learn?

323

How to Delete directory and files recursively from HDFS?

What are the key points of data model of Cassandra?

How Facebook Uses Hadoop, Hive and Hbase ?

768

What is the role of CQLSH?

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