What is fsck?
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What are the Features of Hadoop?
How often DataNode send heartbeat to NameNode in Hadoop?
What do you understand by standalone (or local) mode?
If DataNode increases, then do we need to upgrade NameNode in Hadoop?
How can one check whether NameNode is working or not?
What are the features of Pseudo mode?
What is the basic difference between traditional RDBMS and Hadoop?
How many datanodes can run on a single Hadoop cluster?
Can you explain textinformat?
What is JPS? Why is it used in Hadoop?
Can you explain speculative execution?
Give me examples of unstructured data?
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