What are the hadoop configuration files at present?
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Is there another way to check whether Namenode is working?
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?
What are the four basic parameters of a mapper?
Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?
Can you explain combiner?
How to add/delete a Node to the existing cluster?
Explain how can you debug hadoop code?
What is the job tracker role in hadoop?
What do you think about the speculative execution?
What does rack awareness algorithm means?
How can we create a hadoop cluster from scratch?
Why is checkpointing important in hadoop?
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