What is yarn in hadoop?
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Rack awareness of Namenode?
Define a combiner?
What is salary of hadoop developer?
Define fault tolerance?
What are the steps to submit a Hadoop job?
What is a checkpoint?
Have you ever used Counters in Hadoop. Give us an example scenario?
how would you modify that solution to only count the number of unique words in all the documents?
What is HDFS - Hadoop Distributed File System?
What is high availability in hadoop?
Does hadoop always require digital data to process?
What is output format in hadoop?
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