Give me the examples of Columnar database ?
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Compare Hadoop 2 and Hadoop 3?
What are the main components in Hadoop Eco-System and what are their functions ?
What happens when two clients try to access the same file in the hdfs?
Define a sequence file in hadoop?
After increasing the replication level, I still see that data is under replicated. What could be wrong?
Is it possible to have hadoop job output in multiple directories?
What are the four basic parameters of a mapper?
What does the mapred.job.tracker command do?
What are the tools used in big data?
List out the different stream grouping in apache storm?
How can we create a hadoop cluster from scratch?
What is a namenode?
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