How indexing is done in HDFS?
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What is the difference between HDFS and NAS ?
What is formatting of the dfs?
Input Split & Record Reader and what they do?
What happens to job tracker when namenode is down?
Does hadoop always require digital data to process?
Does google use hadoop?
Explain the use of .mecia class?
How to resolve IOException: Cannot create directory
How is hadoop different from other data processing tools?
what is a datanode?
How to write a Custom Key Class?
What is a task instance in hadoop? Where does it run?