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What is HDFS - Hadoop Distributed File System?
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Can NameNode and DataNode be a commodity hardware?
Define a commodity hardware? Does commodity hardware include ram?
what should be the ideal replication factor in hadoop?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
What are the steps to submit a Hadoop job?
explain Metadata in Namenode?
Why do we use Hadoop?
Which command is used for the retrieval of the status of daemons running the hadoop cluster?
Virtual Box & Ubuntu Installation?
What is configuration of a typical slave node on Hadoop cluster? How many JVMs run on a slave node?
Can we have multiple entries in the master files?
Explain the use of tasktracker in the hadoop cluster?
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