What is the purpose of RawComparator interface?
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What are the limitations of importing RDBMS tables into Hcatalog directly?
shouldn't DFS be able to handle large volumes of data already?
Virtual Box & Ubuntu Installation?
Mention what are the data components used by Hadoop?
What is a namenode? How many instances of namenode run on a hadoop cluster?
What are the important differences between apache and hadoop?
Which command is used for the retrieval of the status of daemons running the hadoop cluster?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
How Mapper is instantiated in a running job?
Explain what happens in textinformat ?
how to share the metastore within multiple users?
Define a metadata?