What do you know by storage and compute node?
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What do you understand from Node redundancy and is it exist in hadoop cluster?
What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?
What are the hadoop's three configuration files?
How do you define "block" in HDFS?
Does Hadoop requires RAID?
Explain what if rack 2 and datanode fails?
What is Partioner in hadoop? Where does it run
How is hadoop different from other data processing tools?
What does the command mapred.job.tracker do?
What problems have you faced when you are working on Hadoop code?
Why password is needed in ssh localhost?
What is the difference between HDFS and NAS ?