Input Split & Record Reader and what they do?
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What is commodity hardware?
What is hadoop framework?
Define a daemon?
What is the functionality of jobtracker in hadoop?
What does the command mapred.job.tracker do?
Which are the two types of 'writes' in HDFS?
What is a “Distributed Cache” in Apache Hadoop?
What is the best hardware configuration to run Hadoop?
What are the problems with Hadoop 1.0?
Who is a 'user' in HDFS?
Why do we use Hadoop?
What do masters consist of?