Which scala library is used for functional programming?
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How to use combiner in hadoop ?
What mode(s) can hadoop code be run in?
How to do ‘map’ and ‘reduce’ works?
Is Namenode machine same as DataNode machine as in terms of hardware?
Explain the difference between an inputsplit and a block?
How to add/delete a Node to the existing cluster?
What jobtracker is in hadoop? What are the activities followed by hadoop?
What type of data we should put in distributed cache? When to put the data in dc? How much volume we should put in?
Name the files which are used by the startup and shutdown commands?
What are the different modes in which we can configure/install Hadoop?
Explain about Hadoop file system and processing framework?
What is a udf?
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