What is configuration of a typical slave node on Hadoop cluster? How many JVMs run on a slave node?
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Mention what are the data components used by Hadoop?
Explain use cases where SequenceFile class can be a good fit?
What if a namenode has no data?
Where is the Mapper Output intermediate kay-value data stored ?
How the HDFS Blocks are replicated?
How many instances of a jobtracker run on hadoop cluster?
What do slaves consist of?
What is Writable & WritableComparable interface?
What do masters consist of?
Is hadoop open source?
What is NoSQL?
Define a namenode?