How to change replication factor of files already stored in HDFS?
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What is the functionality of jobtracker in hadoop?
What is a Combiner?
Mention what are the data components used by Hadoop?
Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?
What is Hadoop Custom partitioner ?
What are active and passive "NameNodes"?
What is the use of Combiner?
What is yarn in hadoop?
How to keep HDFS cluster balanced?
What is structured data?
How many JVMs run on a slave node?
Give the use of the bootstrap panel.