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 company initially developed Hive ?

1 2500

What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?

1147

What are the components of Hive architecture?

1158

What is HDFS Federation?

1031

What are watches?

1073

Explain the Job OutputFormat?

1005

Virtual Box & Ubuntu Installation?

1052

What is the difference between HDFS and NAS ?

1422

How Mapper is instantiated in a running job?

1039

Where do you specify the Mapper Implementation?

1061

What is the meaning of speculative execution in Hadoop? Why is it important?

1094

What is the InputFormat ?

1066

Command to format the NameNode?

990

Who is a 'user' in HDFS?

943

What is the meaning of the term "non-DFS used" in Hadoop web-console?

1361

Un-Answered Questions { Big Data }

How kafka communicate with clients and servers?

563

What is the difference between Internal Table and External Table in Hive?

766

What is contextual routing in flume?

824

What is hadoop technology?

319

What is partitioning?

515

How to create and manage a view in HCatalog?

Where sorting is done on mapper node or reducer node in MapReduce?

736

What are quotas?

544

Explain about the popular use cases of Apache Spark

436

Different Running Modes of Apache Spark

320

Is it necessary to kill the topology while updating the running topology?

631

Is spark better than mapreduce?

293

What is executor memory in spark?

336

What is the primary purpose of sqoop in the hadoop architecture?

what job does the conf class do?

847

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