What does jps command do in Hadoop?
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What are the main components of hadoop?
Can you explain commodity hardware?
Why use hadoop?
What are the core methods of a Reducer?
Give a brief overview of Hadoop history?
What is Federation?
Explain about Hadoop file system and processing framework?
How do you overwrite replication factor?
Explain how Hadoop cluster hardware planning and provisioning is done?
What is Mapper? How can we compress Mapper output in Hadoop?
What are the port numbers of task tracker?
Explain the usage of Context Object?
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