What are the differences between hadoop 1 and hadoop 2?
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Clarify what webdav is in hadoop?
What is difference between reducer and combiner?
What is distributed copy (distcp)?
If no custom partitioner is defined in Hadoop then how is data partitioned before it is sent to the reducer?
When and how to create hadoop archive?
Is it possible to provide multiple input to Hadoop? If yes then how?
What is a commodity hardware? Does commodity hardware include RAM?
Name the files which are used by the startup and shutdown commands?
Can you explain commodity hardware?
How to specify more than one path for storage in Hadoop?
How to create hadoop archive?
Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?
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