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Un-Answered Questions { Big Data }
explain Metadata in Namenode?
What is a 'block' in HDFS?
What is Derby database?
How many Daemon processes run on a Hadoop system?
What are the limitations of importing RDBMS tables into Hcatalog directly?
How the Client communicates with HDFS?
What is NoSQL?
What is Row Key?
What is a Task instance in Hadoop? Where does it run?1
What is IdentityMapper?
Why do we use Hadoop?
what is the typical block size of an HDFS block?
What is Hadoop Custom partitioner ?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
What stored in HDFS?
