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What is the purpose of dfsadmin tool?
Does google use hadoop?
Where is the Mapper Output intermediate kay-value data stored ?
What is the jobtracker?
Data Engineer Given a list of followers in the format:123, 345234, 678345, 123…Where column one is the ID of the follower and column two is the ID of the followee. Find all mutual following pairs (the pair 123, 345 in the example above). How would you use Map/Reduce to solve the problem when the list does not fit in memory?
What is the relation between job and task in hadoop?
What does /var/hadoop/pids do?
Is a job split into maps?
Where is the Mapper Output stored?
Explain a simple Map/Reduce problem.
What is yarn in hadoop?
What are the two main components of ResourceManager?
Is fs.mapr.working.dir a single directory?
Explain what is the purpose of RecordReader in Hadoop?
What are the problems with Hadoop 1.0?
