Explain how can you debug hadoop code?
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Explain what is namenode in hadoop?
is there a standard procedure to deploy hadoop?
How does job tracker schedule a job for the task tracker?
What is the key difference between NameNode and DataNode in Hadoop?
Explain how jobtracker schedules a task?
Explain how do you overwrite replication factor?
List Hadoop’s three configuration files?
What daemons run on master nodes?
Why Hadoop performs replication, although it results in data redundancy?
How does speculative execution work in Hadoop?
What are the major differences between Hadoop 2 and Hadoop 3?
Have you ever used counters in hadoop?
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