How many datanodes can run on a single Hadoop cluster?
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Mention what are the most common input formats defined in hadoop?
Can hadoop handle streaming data?
Explain Data Locality in Hadoop?
Clarify how ordering in hdfs is finished?
What do you understand by standalone (or local) mode?
How to add/delete a Node to the existing cluster?
How can we create a hadoop cluster from scratch?
Why would nosql be better than using a sql database? And how much better is it?
What is job tracker in Hadoop?
Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?
How is security achieved in Hadoop?
What is namenode?
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