What is Rack Awareness in Apache Hadoop?
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Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
On What concept the Hadoop framework works?
Explain how input and output data format of the hadoop framework?
What is Apache Hadoop YARN?
Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?
Where is the Mapper Output intermediate kay-value data stored ?
what is the typical block size of an HDFS block?
What is Hadoop serialization?
What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?
How would you tackle counting words in several text documents?
What are the benefits of block transfer?
Why do we need a password-less ssh in fully distributed environment?
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