What are the important differences between apache and hadoop?
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On what basis data will be stored on a rack?
Should we use RAID in Hadoop or not?
Define a metadata?
What are the modules that constitute the Apache Hadoop 2.0 framework?
Explain the shuffle?
shouldn't DFS be able to handle large volumes of data already?
What is configuration of a typical slave node on Hadoop cluster? How many JVMs run on a slave node?
What is Distributed Cache?
How is HDFS fault tolerant?
What is inputformat in hadoop?
Define tasktracker.
What do masters consist of?