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

Big Data Interview Questions

Questions Answers Views Company eMail

what is difference between int and intwritable?

1525

What is Apache Hadoop YARN?

1500

What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?

1156

What are channel selectors?

1089

What are the stable versions of Hadoop?

1065

Input Split & Record Reader and what they do?

1083

what is the default replication factor in HDFS?

1055

What is the core of the job in MapReduce framework?

910

How indexing is done in HDFS?

1148

How Pig differs from MapReduce?

847

Why are the number of splits equal to the number of maps?

1017

What are the Data types in Pig?

955

What are the two main components of ResourceManager?

1199

MapReduce Types and Formats and Setting up a Hadoop Cluster?

974

How will you make changes to the default configuration files?

1021

Un-Answered Questions { Big Data }

Is spark sql a database?

279

What is the FlatMap Transformation in Apache Spark RDD?

303

What is the Data model, and the hierarchical namespace?

What is the process to change the files at arbitrary locations in HDFS?

1456

What are the most commonly defined input formats in Hadoop?

1108

What is Erasure Coding in Hadoop?

555

What is Slot in Hadoop v1? Why was it removed from Hadoop v2?

559

Mention how can you stop a partition form being queried?

1160

In which scenario Hive is good fit?

1025

What is SSTable?

What is HBase HMaster?

362

Why is Kafka technology significant to use?

562

What is spark tool?

279

What are the sources generating big data?

624

If DataNode increases, then do we need to upgrade NameNode?

603

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