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What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?
In which directory hadoop is installed?
Does hadoop follows the unix pattern?
What is the hadoop-core configuration?
When and how to create hadoop archive?
What is the difference between namenode and datanode in hadoop?
Ideally what should be the replication factor in hadoop?
What is rack awareness in hadoop?
While starting hadoop services, datanode service is not running?
what happens when namenode goes down during file read operation in hadoop?
Why slaves limited to 4000 in hadoop version 1?
What is heartbeat in hadoop?
Explain small file problem in hadoop
How to create the directory when name node is in safe mode?
Why can we not create directory /user/dataflair/inpdata001 when name node is in safe mode?
