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

Big Data Interview Questions

Questions Answers Views Company eMail

how Hadoop is different from other data processing tools?

646

List the configuration parameters that have to be specified when running a MapReduce job.

600

what is a sequence file in Hadoop?

677

What are the key differences between Pig vs MapReduce?

611

When is it not recommended to use MapReduce paradigm for large

647

what happens in textinformat ?

667

Explain the differences between a combiner and reducer

652

What is a TaskInstance?

668

What is the default input type in MapReduce?

661

Which directory does hadoop install to?

485

Why use hadoop?

436

What are the actions followed by hadoop?

466

What kind of hardware is best for hadoop?

418

Where are hadoop’s configuration files located and list them?

447

How jobtracker assign tasks to the tasktracker?

412

Un-Answered Questions { Big Data }

What is the relation between MapReduce and Hive?

643

What is the Difference SparkSession vs SparkContext in Apache Spark?

417

What is Sqoop Job?

What are secondary indexes?

What combiners are and when you should use a combiner in a mapreduce job?

598

Explain about the scalar datatypes in Apache Pig?

896

Explain Alter Table Statement in HCatalog?

What is sink in flume?

How can we see all the hosts that are available in Ambari?

what happens when Hadoop spawned 50 tasks for a job and one of the task failed?

691

What is HDFS block size and what did you chose in your project?

976

What is Mapper in Hadoop?

555

What is the procedure for namenode recovery?

454

Explain hive udf function?

527

What are the parameters used to create a keyspace?

112

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