Big Data Interview Questions
Questions Answers Views Company eMail

Which company initially developed Hive ?

1 622

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

201

What are the components of Hive architecture?

296




What is HDFS Federation?

186

What are watches?

175

Explain the Job OutputFormat?

220

Virtual Box & Ubuntu Installation?

152

What is the difference between HDFS and NAS ?

473

How Mapper is instantiated in a running job?

236

Where do you specify the Mapper Implementation?

170

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

231

What is the InputFormat ?

187

Command to format the NameNode?

144

Who is a 'user' in HDFS?

172

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

406







Un-Answered Questions { Big Data }

What is the function of ApplicationMaster?

168


What is Reduce only jobs?

177


How we can change Replication factor when Data is on the fly?

545


Knox and Hadoop Development Tools?

157


What are the different components of a Hive query processor?

140






Which are the two types of 'writes' in HDFS?

437


How do you define "block" in HDFS?

141


What comes in Hadoop 2.0 and MapReduce V2 YARN

218


What is 'Key value pair' in HDFS?

153


What is Apache Pig?

122


What is the use of "order by" in Hive?

66


Can Hadoop be compared to NOSQL database like Cassandra?

145


In Map Reduce why map write output to Local Disk instead of HDFS?

221


What is the purpose of RawComparator interface?

278


Differentiate between Hadoop MapReduce and Pig?

57