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|Interview Questions and Answers|
|Ans. Input -> Mapper -> Combiner -> Reducer -> Output|
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|What is the difference between namenode and datanode in Hadoop?|
|Which is the default Input Formats defined in Hadoop ?|
|Which of the following is not an input format in Hadoop ?|
|MapReduce was devised by ...|
|Which of the following is not a phase of Reducer ?|
| How many instances of Job tracker can run on Hadoop cluster ? |
|Which of the following is not the Dameon process that runs on a hadoop cluster ?|
|What is a Sequence File?|
|What is the input to the Reduce function ?|