How many JVMs run on a slave node?
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What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?
What is a spill factor with respect to the ram?
What is the difference between Hadoop and Traditional RDBMS?
Define a task tracker?
Why password is needed in ssh localhost?
Define streaming?
What is a namenode? How many instances of namenode run on a hadoop cluster?
What if rack 2 and datanode fails?
What is the difference between SQL and NoSQL?
How many Daemon processes run on a Hadoop system?
How can I restart namenode?
what should be the ideal replication factor in hadoop?
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