What are the modes in which Apache Hadoop run?
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What is the default replication factor?
what should be the ideal replication factor in hadoop?
What do you mean by taskinstance?
Explain the wordcount implementation via hadoop framework ?
Where is the Mapper Output intermediate kay-value data stored ?
What is structured data?
Explain what if rack 2 and datanode fails?
What are watches?
Explain how do ‘map’ and ‘reduce’ works?
What hadoop does in safe mode?
How many instances of JobTracker can run on a Hadoop Cluser?
What are the benefits of block transfer?
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