When and how to create hadoop archive?
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What are the parameters of mappers and reducers?
In hadoop_pid_dir, what does pid stands for?
What kind of hardware is best for hadoop?
What is the hadoop-core configuration?
Explain what is jobtracker in hadoop? What are the actions followed by hadoop?
Where are Hadoop’s configuration files located?
What are the most common OutputFormat in Hadoop?
What does secondary name-node means?
Why do we need Hadoop?
What a task tracker is in hadoop?
In which location name node sores its metadata and why?
What happen when namenode enters in safemode in hadoop?
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