What are the parameters of mappers and reducers?
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Explain small file problem in hadoop
Give me an example of document database ?
When should be hadoop archive create?
If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?
Can you explain rack awareness?
How to handle bad records during parsing?
What are 'slaves' and 'masters' in Hadoop?
Explain what is webdav in hadoop?
Do we need to place 2nd and 3rd data in rack 2 only?
How would you check whether your NameNode is working or not?
In which directory hadoop is installed?
Does hadoop follows the unix pattern?
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