Un-Answered Questions { Hadoop General }

What is Identity reducer?

237


What is Chain Mapper?

297


What are the core methods of a Reducer?

257


What are the parameters of mappers and reducers?

229


What is the difference between TextinputFormat and KeyValueTextInputFormat class?

252


How is the splitting of file invoked in Hadoop ?

270


How many InputSplits will be made by hadoop framework?

262


Explain the usage of Context Object?

234


List Hadoop’s three configuration files?

227


What is Distributed Cache in Hadoop?

268


What is the relationship between Jobs and Tasks in Hadoop?

420


Who are ‘Data Scientists’?

231


Tell me some major benefits of Hadoop?

226


What is structured and unstructured data?

252


According to IBM, what are the three characteristics of Big Data?

248