Which port does SSH work on?
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How many maps are there in a particular job?
What is a record reader?
How often do you need to reformat the namenode?
What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?
How can you set an arbitrary number of Reducers to be created for a job in Hadoop?
Which one is default?
Why cloudera is used?
How many datanodes can run on a single Hadoop cluster?
What is fsck?
What are the four basic parameters of a mapper?
Explain is it possible to search for files using wildcards?
Mention what is the data storage component used by hadoop?
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