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How many daemon processes run on a hadoop cluster?
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Do we need to place 2nd and 3rd data in rack 2 only?
Can you define inputsplit in hadoop?
Doesn’t google have its very own version of dfs?
Name the files which are used by the startup and shutdown commands?
How can one write custom record reader?
When should be hadoop archive create?
What happen if a datanode loses network connection for a few minutes?
Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?
What is a udf?
what if job tracker machine is down?
Is Namenode machine same as DataNode machine as in terms of hardware?
How namenode handles data node failures?
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