Name some companies that use Hadoop?
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Which are the three main hdfs-site.xml properties?
What is configuration of a typical slave node on Hadoop cluster? How many JVMs run on a slave node?
In which location Name Node stores its Metadata and why?
What is the use of combiners in the hadoop framework?
What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?
What is structured data?
Explain InputFormat?
What are the hadoop's three configuration files?
What are the four characteristics of Big Data?
On which port does ssh work?
Whats is distributed cache in hadoop?
What is small file problem in hadoop?
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