Un-Answered Questions { Hadoop General }

What is Identity reducer?

235


What is Chain Mapper?

295


What are the core methods of a Reducer?

255


What are the parameters of mappers and reducers?

227


What is the difference between TextinputFormat and KeyValueTextInputFormat class?

250


How is the splitting of file invoked in Hadoop ?

266


How many InputSplits will be made by hadoop framework?

260


Explain the usage of Context Object?

230


List Hadoop’s three configuration files?

221


What is Distributed Cache in Hadoop?

264


What is the relationship between Jobs and Tasks in Hadoop?

416


Who are ‘Data Scientists’?

227


Tell me some major benefits of Hadoop?

224


What is structured and unstructured data?

248


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

246