How often DataNode send heartbeat to NameNode in Hadoop?
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Can you explain textinformat?
Doesn’t google have its very own version of dfs?
Mention what is the data storage component used by hadoop?
Explain the core methods of the reducer?
What are the Features of Hadoop?
How can native libraries be included in yarn jobs?
Give examples of some companies that are using Hadoop structure?
What are the differences between hadoop 1 and hadoop 2?
What are the side effects of not running a secondary name node?
What do you know about the speculative execution?
Why do the nodes are removed and added frequently in a hadoop cluster?
What happens if number of reducers are 0?
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