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Why do we need Hadoop Archives? How is it created?
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Can you define udf?
What is a commodity hardware? Does commodity hardware include RAM?
Why we use intwritable instead of int? Why we use longwritable instead of long?
What happens if the number of reducers is 0 in Hadoop?
What are the common types of NOSQL data bases ?
How does job tracker schedule a job for the task tracker?
Have you ever used counters in hadoop?
Whats the default port that jobtrackers listens ?
Is Namenode machine same as DataNode machine as in terms of hardware in Hadoop?
How to specify more than one path for storage in Hadoop?
If no custom partitioner is defined in Hadoop then how is data partitioned before it is sent to the reducer?
Is it possible to have hadoop job output in multiple directories? If yes, how?
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