What is the problem with small files in Apache Hadoop?
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Explain the difference between gen1 and gen2 hadoop with regards to the namenode?
Explain the features of fully distributed mode?
How is HDFS fault tolerant?
What is high availability in hadoop?
Why is Apache Spark faster than Apache Hadoop?
Rack awareness of Namenode?
How many instances of tasktracker run on a hadoop cluster?
What is Partioner in hadoop? Where does it run
How client application interacts with the NameNode?
Is hadoop open source?
What is structured data?
What is oozie in hadoop?
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