What is the default replication factor?
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what factors the block size takes before creation?
Whats is distributed cache in hadoop?
On which port does ssh work?
Explain the use of tasktracker in the hadoop cluster?
Explain how do ‘map’ and ‘reduce’ works?
Which files are used by the startup and shutdown commands?
What is IdentityMapper?
Define streaming?
What does job conf class do?
What is a namenode? How many instances of namenode run on a hadoop cluster?
What is the function of ApplicationMaster?
Explain the basic difference between traditional rdbms and hadoop?
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