How is security achieved in Apache Hadoop?
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On what basis name node distribute blocks across the data nodes?
What is the Use of SSH in Hadoop ?
What happens to job tracker when namenode is down?
Why are the number of splits equal to the number of maps?
What does job conf class do?
What are sink processors?
Did you ever ran into a lop sided job that resulted in out of memory error
Is hadoop the future?
On what basis Namenode will decide which datanode to write on?
What is speculative execution in Hadoop?
What is Disk Balancer in Apache Hadoop?
What does /etc /init.d do?
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