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

Big Data Interview Questions

Questions Answers Views Company eMail

Explain how input and output data format of the hadoop framework?

714

when hadoop enter in safe mode?

744

How to enable recycle bin or trash in hadoop?

706

Whats is distributed cache in hadoop?

678

what should be the ideal replication factor in hadoop?

653

What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?

722

How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?

728

How does an hadoop application look like or their basic components?

728

What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?

668

What is partitioning?

462

Can we change the file cached by distributed cache

428

Why would nosql be better than using a sql database? And how much better is it?

484

Why we use intwritable instead of int? Why we use longwritable instead of long?

483

What happens if you don?t override the mapper methods and keep them as it is?

462

What are the side data distribution techniques?

478

Un-Answered Questions { Big Data }

Define streaming?

655

Explain the different logging levels in cassandra.

Explain HCatalog Create Table CLI along with its syntax?

What are the parameters of mappers and reducers?

489

What is dataframe api?

320

What is Starvation scenario in spark streaming?

346

What is the relationship between hdfs, hbase, pig, hive and azkaban?

510

What is commodity hardware?

659

What bit version that ambari needs and also list out the operating systems that are compatible?

What is the use of coordinator node in read?

what is next step after mapper or maptask?

428

What is oozie in hadoop?

672

Explain the functionalities of ganglia in ambari?

What are the benefits of using Spark with Apache Mesos?

290

Name and describe three different kernel functions and in what situation you would use each.

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