Which are the three modes in which hadoop can be run?
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Give examples of some companies that are using Hadoop structure?
How many InputSplits will be made by hadoop framework?
What is the block size in Hadoop?
Does hadoop follows the unix pattern?
How to add/delete a Node to the existing cluster?
How often do you need to reformat the namenode?
Mention what is rack awareness?
Explain some important features of hadoop?
Do we need to place 2nd and 3rd data in rack 2 only?
After increasing the replication level, I still see that data is under replicated. What could be wrong?
What is the basic difference between traditional RDBMS and Hadoop?
What type of data hadoop can handle ?
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