Un-Answered Questions { Big Data }

Mention how hadoop is different from other data processing tools?

228


Mention what are the most common input formats defined in hadoop?

241


Mention what is rack awareness?

217


Mention what is the difference between an rdbms and hadoop?

227


Mention what are the three modes in which hadoop can be run?

226


Explain how does hadoop classpath plays a vital role in stopping or starting in hadoop daemons?

397


Explain what is storage and compute nodes?

258


Explain how jobtracker schedules a task?

244


Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?

250


What happens in text format?

228


Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?

254


Explain what is a task tracker in hadoop?

212


Explain what is speculative execution?

208


Explain what happens in text format?

292


Mention what is distributed cache in hadoop?

227