Name the most common Input Formats defined in Hadoop? Which one is default?
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What is a record reader?
What are the main components of hadoop?
How jobtracker assign tasks to the tasktracker?
What are 'slaves' and 'masters' in Hadoop?
Mention what daemons run on a master node and slave nodes?
Can you define a checkpoint?
Is Namenode machine same as DataNode machine as in terms of hardware in Hadoop?
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Explain the Single point of Failure in Hadoop?
Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?
Explain some important features of hadoop?
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